Patent application number | Description | Published |
20080227944 | Biodegradable, Super Absorbent Polymer Hydrogels and a Method For Their Preparation - The invention relates to a method for the preparation of a superabsorbent polymer hydrogel, comprising the steps of (i) crosslinking a 3% overall aqueous solution of carboxymethylcellulose sodium salt and hydroxyethylcellulose with 5% carbodiimide, in the presence of an acid catalyst; (ii) washing the gel obtained at least once by swelling in a polar organic solvent; and (iii) drying the gel by phase inversion in a non-solvent for cellulose. The invention further concerns the superabsorbent hydrogels obtainable by said method and the uses thereof. | 09-18-2008 |
20090130181 | Antibacterial Surface Treatments Based on Silver Cluster Deposition - Process to obtain antibacterial surfaces by silver deposition in the form of firmly bonded small particles and to the antibacterial substances obtained by aforementioned treatments. Silver deposition is obtained by surface impregnation of natural or synthetic material in an alcoholic solution with silver salt and, later, by their exposure to UV-rays until metal silver clusters form as a result of silver ions reduction on the material surface. The invention relates to the obtained antibacterial substances. | 05-21-2009 |
20100234233 | POLYMER HYDROGELS AND METHODS OF PREPARATION THEREOF - The invention relates to a method for the preparation of a polymer hydrogel, comprising cross-linking a precursor comprising a hydrophilic polymer optionally in combination with a second hydrophilic polymer, using a polycarboxylic acid as the cross-linking agent. The invention further concerns the polymer hydrogel obtainable by the method of the invention and the use thereof in a number of different applications. | 09-16-2010 |
20120214222 | METHOD FOR MANUFACTURING A DEVICE FOR REGENERATING BIOLOGICAL TISSUES, PARTICULARLY FOR REGENERATING TISSUES OF THE CENTRAL NERVOUS SYSTEM - A method for manufacturing a device for regenerating biological tissues, particularly for regenerating tissues of the central nervous system, and a device that can be manufactured with said method, the device comprising an outer sheath based on collagen which is substantially tubular and can be interposed between the endings of a biological tissue to be regenerated, and at least one supporting element based on collagen, which is accommodated inside the outer sheath. | 08-23-2012 |
20120226363 | METHOD FOR MANUFACTURING A DEVICE FOR REGENERATING BIOLOGICAL TISSUES - A device for regenerating biological tissues, particularly for regenerating tissues of the peripheral nervous system, the respective manufacturing method and the instrument used in the method, the regeneration device comprising a hollow tubular structure based on biocompatible material and having a structural porosity in which the pores are oriented substantially radially with respect to its longitudinal axis so as to minimize the formation of scar tissue around the damaged site and allow the growth of the biological tissue inside the pores and inside the duct defined by the hollow tubular structure and facilitate the transport of nutrients. | 09-06-2012 |
20130089737 | METHOD FOR PRODUCING HYDROGELS - The present invention provides a method of producing a polymer hydrogel comprising the steps of: (1) preparing an aqueous solution of a water soluble polysaccharide derivative and a polycarboxylic acid; (2) optionally agitating the solution, for example, by stirring; (3) isolating a polysaccharide derivative/polycarboxylic acid composite from the solution; and (4) heating the polysaccharide derivative/polycarboxylic acid composite at a temperature of at least about 80° C., thereby cross-linking the polysaccharide with the polycarboxylic acid. The invention also provides polymer hydrogels produced by the methods of the invention. | 04-11-2013 |
20140296507 | Polymer Hydrogels and Methods of Preparation Thereof - The invention relates to a method for the preparation of a polymer hydrogel, comprising cross-linking a precursor comprising a hydrophilic polymer optionally in combination with a second hydrophilic polymer, using a polycarboxylic acid as the cross-linking agent. The invention further concerns the polymer hydrogel obtainable by the method of the invention and the use thereof in a number of different applications. | 10-02-2014 |
20150366898 | METHODS FOR TREATING OVERWEIGHT OR OBESITY - The present invention relates to methods of managing weight, and treating overweight or obesity and treating or preventing diabetes in a subject in need thereof. In one embodiment, the method comprises the steps of (a) orally administering to the subject from about 0.7 g to about 4 g of crosslinked carboxymethylcellulose; and (b) orally administering to the subject at least about 100 mL of water per gram of crosslinked carboxymethylcellulose. Steps (a) and (b) are conducted prior to or with at least one meal per day. | 12-24-2015 |
Patent application number | Description | Published |
20080215194 | FORMULATION OF A PREVENTIVE MAINTENANCE MESSAGE RELATING TO THE FUNCTIONAL DEGRADATIONS OF AN AIRCRAFT - A method of preventive maintenance is disclosed for an aircraft. The aircraft includes components, including items of equipment of the aircraft and/or electronic modules and/or physical links. The lifetime information for the components is known. The aircraft also includes means for monitoring the components, a centralized maintenance system, and means for estimating the life time of the components. The aircraft carries out a set of functions, each being ensured by a chain of components. The method comprises several steps including, a first step of locating the degradations of the items of equipment, a second step making it possible to allocate the located degradations to the various functions of the aircraft, a third step of estimating the lifetime of the functions identified in the second step, and a fourth step of formulating the maintenance message constructed on the basis of the previous steps. | 09-04-2008 |
20080304418 | MAINTENANCE SYSTEM FOR A SET OF EQUIPMENT - The invention relates to a maintenance system for a set of equipment of an aircraft, forming a physical network ( | 12-11-2008 |
20090292951 | METHOD AND DEVICE FOR FAULT LOCATION IN A SYSTEM - The invention relates to a method and a device for locating a fault in a system. The system includes a set of elements. The elements are connected in a network. Each element is associated with an operational status and a probability of failure. The method according to an embodiment of the invention includes, for each of the elements having a status indicating a malfunction, denoted as a defective element, the creation, from the system topology, of an expression comprising terms corresponding to functional elements connected to said defective element. If several expressions have been created in the preceding step, then merge expressions having at least one term in common. For each expression, delete terms in the expression corresponding to elements having a “healthy” status. Calculate a minimal expression from the preceding expression. Calculate failure probabilities for selected members of the minimal expression based on failure probabilities of the corresponding elements. Calculate the location of the fault to the elements corresponding to the members of the minimal expression for which the ratio of failure probabilities to exposure time is greater than a threshold. | 11-26-2009 |
20090306838 | METHOD AND DEVICE FOR AIDING THE MAINTENANCE OF A SYSTEM - The invention relates to a method for aiding the maintenance of a system, the system comprising a set of networked elements, the system being accompanied by indications defining subsets of networked elements E | 12-10-2009 |
Patent application number | Description | Published |
20100125379 | Device Allowing Improvement in Maintenance Procedures for Onboard Equipment - The present invention relates to the field of aiding ground maintenance of an aircraft. More particularly, the invention consists of a portable access terminal intended to aid maintenance, commonly designated by the acronym PMAT for Portable Maintenance Access Terminal. | 05-20-2010 |
20110004369 | Method and System for Generating Electronic Documentation for Maintenance - A method for generating electronic documentation (DOC) for the maintenance of a set of equipment (EQPT), in particular of an aircraft, is provided. The method is beneficial in allowing the automatic generation of electronic documentation (DOC) updated dynamically in tandem with the progress in a maintenance operation on the set of equipment (EQPT). Utilization of particular schemes for constructing dynamic models (ABS) associated with sets of equipment (EQPT) is advantageously accomplished. | 01-06-2011 |
20110040441 | DEVICE FOR SYSTEM DIAGNOSIS - The invention relates to a device for system diagnosis of an aircraft. The device includes: means for the monitoring of equipment of the system, the means for emitting messages of observations on the basis of effects produced by equipment; means for the determination of a set of observations on the basis of the messages of observations arising from the monitoring of a log of the messages of observations and of a model representing a current state of the system; means for the determination of indictments on the basis of observations of the set of observations and of a behavioural model of the system, the indictments being logical relations between operating modes of equipment having produced effects; and means for the determination of maintenance operations on the basis of the indictments. | 02-17-2011 |
20110153535 | METHOD AND DEVICE FOR PERFORMING A MAINTENANCE FUNCTION - A method for performing a maintenance function of a system under diagnosis includes a step for hierarchical decomposition of the system under diagnosis into sub-systems based on the model of the system and, for each sub-system, steps for determination of a model of the sub-system starting from the model of the system, and allocation of a diagnostic method depending on the processing and memory resources of said sub-system. The method allocated is a first diagnostic method based on the model of the system or a second diagnostic method based on predefined logical relationships. The method further includes calculation of the logical relationships for the sub-systems implementing the second diagnostic method, and the transfer of the logical relationships to the sub-systems implementing the second method and the transfer of the model to the sub-systems implementing the first method. | 06-23-2011 |
20110254704 | Device for Formulating the Alerts of an Aircraft System - A system and device is provided for formulating alerts of the items of equipment of an aircraft. The device includes a database of virtual objects representing the items of equipment for constructing a virtual model representative on the one hand of the topological configuration of the network of items of equipment and on the other hand of the configuration of the chain of functional applications implemented by the items of equipment, means for each virtual object to formulate a request for consulting the status of the functional application carried out by the item of equipment associated with the object and means for detecting alerts for formulating requests for consulting the status of each of the objects of the virtual model so as to detect anomalies of configuration of the topology of the network of items of equipment and of the chain of functional applications of the virtual model and to transmit the alerts associated with the anomalies. The device detects and manages the alerts of an aircraft. | 10-20-2011 |
20120259587 | Method and Device for Determining Diagnoses - A method for determining diagnoses for a system having a plurality of pieces of equipment, the equipment being adapted to transmit signals indicating its operating state, includes the following steps: acquiring observations based on signals transmitted by the equipment of the system under diagnosis, and determining a global situation based on the acquired observations and predetermined failure trees associated with these observations, wherein a failure tree describes the relations between an observation and root causes, and a root cause indicates a failure in a piece of equipment; determining connected situations, a connected situation being a set of observations which, when considered in pairs, have at least one common root cause in their failure tree; determining partial diagnoses on the basis of each of the connected situations, the diagnoses including root causes associated with observations signalling a failure; and, displaying the diagnoses. | 10-11-2012 |
20140012542 | METHOD AND SYSTEM FOR MEASURING THE PERFORMANCE OF A DIAGNOSER - A method and a device for measuring the performance of a diagnoser of a system under diagnosis, which comprises a knowledge base comprising a set of failures of the system, of effects observed and of relations between failures and effects observed, and an algorithmic core. The method comprises a step of calculating a specific detection rate and a specific location rate for the knowledge base, respectively referred to as expected detection rate and expected location rate. It also comprises a step of calculating a specific detection rate and a specific location rate for the set consisting of knowledge base and algorithmic core, respectively referred to as detection rate obtained and location rate obtained; and a step of calculating the performance of the diagnoser as a function of the expected and obtained detection rates and of the expected and obtained location rates. | 01-09-2014 |
20150187148 | DEVICE AND METHOD FOR ASSISTING WITH RECONFIGURATION OF AN AIRCRAFT, AIRCRAFT INCLUDING SUCH A DEVICE AND ASSOCIATED COMPUTER PROGRAM PRODUCT - A device and method for assisting with reconfiguration of an aircraft, an aircraft including such a device and an associated computer program product are disclosed. In one aspect, the aircraft has an operational configuration, is configured to move in an operational environment, and includes at least one avionic system, at least one avionic member, and at least one monitoring system configured to detect an abnormality of an avionic member or a perturbation of the operational environment and to generate a fault information. The device is connected between at least one monitoring system and at least one avionic system, and includes a reception module configured to receive a fault information from the monitoring system, an impact computation module configured to compute an impact on the operational configuration of the aircraft, and a transmission module configured to transmit the computed impact to at least one avionic system. | 07-02-2015 |
Patent application number | Description | Published |
20140203148 | CRYOGENIC THRUSTER ASSEMBLY - A cryogenic thruster assembly including: a reignitable main thruster; a first cryogenic tank connected to the main thruster to feed the main thruster with a first propellant; a first gas tank; at least one settling thruster; and a first feed circuit for feeding the first gas tank. The feed circuit of the first gas tank is connected to the first cryogenic tank and includes a heat exchanger for using heat given off by the at least one settling thruster to vaporize a liquid flow of the first propellant as extracted from the first cryogenic tank to feed the first gas tank with the first propellant in the gaseous state. A method feeds the first gas tank with the first propellant in the gaseous state. | 07-24-2014 |
20140245717 | DEVICE FOR HEATING A FLUID - A device heating a fluid and usable in a rocket launcher to pressurize a liquefied propellant. The device includes a first burner performing first combustion between a limiting propellant and an excess propellant; a first heat exchanger in which first burnt gas from the first combustion transfers heat to the fluid; at least one second burner into which both the first burnt gas and some limiting propellant are injected to perform second combustion between the limiting propellant and at least a portion of unburnt excess propellant present in the first burnt gas. The second burnt gas from the second combustion flows through a second heat exchanger to transfer heat to the fluid. Burnt gas from each combustion flows in respective burnt gas tubes within a common overall heat exchanger including the heat exchange units, the gas transferring heat to the fluid, the fluid flowing between the burnt gas tubes. | 09-04-2014 |
20140260181 | JET PROPULSION DEVICE AND FUEL SUPPLY METHOD - A reaction propulsion device in which a first feed circuit for feeding a main thruster with a first propellant includes a branch connection downstream from a pump of a first turbopump, which branch connection passes through a first regenerative heat exchanger and a turbine of a first turbopump, and in which a second feed circuit for feeding the main thruster with a second propellant includes, downstream from a pump of a second turbopump, a branch-off passing through a second regenerative heat exchanger and a turbine of the second turbopump. At least one secondary thruster is connected downstream from the turbines of the first and second turbopumps. | 09-18-2014 |
20140283499 | DEVICE AND A METHOD FOR FEEDING A ROCKET ENGINE PROPULSION CHAMBER - The invention relates to a device and a method for feeding a propulsion chamber | 09-25-2014 |
20140373507 | ROCKET ENGINE WITH OPTIMIZED FUEL SUPPLY - A rocket engine comprises a prechamber and a combustion chamber, two respective feed pipes of the engine, and two turbopumps. The engine is a staged combustion engine. A jet pump is arranged in at least a first feed pipe. After being pressurized, a portion of the fluid flowing in the first feed pipe is directed to the jet pump in order to enable the jet pump to entrain the fluid flowing in said feed pipe to the admission orifice of said first pump, thereby raising the pressure at the feed orifice of the pump. | 12-25-2014 |
20150285187 | METHOD AND A DEVICE FOR FEEDING A ROCKET ENGINE - The invention relates to a feed device for feeding a thrust chamber ( | 10-08-2015 |