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Dahmen, DE
Erik Dahmen, Darmstadt DE
| Patent application number | Description | Published |
|---|---|---|
| 20090187766 | System and Method for Digital Signatures and Authentication - A system and method for authentication and digital signatures on memory-only supports, comprising a read-once memory unit storing secret arrays, whose contents are destroyed upon reading, a standard memory unit storing encrypted arrays, tree data authenticating the encrypted arrays to one single public key, and a certificate of the public key issued by a certificate authority. The memory support sends its public key and certificate to a verifier, receives a challenge which is signed by elements from secret arrays in the read-once memory. The verifier system checks the authenticity of the data revealed from the read-once memory by encrypting it and comparing the result to one of the encrypted arrays, and verifies that the encrypted array authenticates to the public key using tree data. Finally, the verifier checks the authenticity of the public key using the certificate. | 07-23-2009 |
Jan Dahmen, Seitingen-Oberflacht DE
| Patent application number | Description | Published |
|---|---|---|
| 20110040148 | Permanently sealed length compensation for endoscope shafts - An endoscope with an instrument housing and with a shaft that is mounted on the distal end of the instrument housing and consists of an outer tube and an inner tube that is mounted at least partly in the outer tube, so that the outer tube and the inner tube are mounted on the instrument housing so that they can move with respect to one another in the axial direction of the shaft. To provide an endoscope that ensures a constantly fluid-tight relative motion of the two shaft tubes with respect to one another, it is proposed with the invention that the outer tube and inner tube should be mounted on the instrument housing so that they are mobile with respect to one another in the axial direction of the shaft by means of at least one flexible membrane. | 02-17-2011 |
| 20110040151 | POSITIONING CLIP - A positioning clip to position an inner tube in an outer tube of an endoscope includes at least one inner support surface to support the positioning clip on the inner tube, at least one outer support surface to support the positioning clip on the outer tube, and a clamping device to clamp the positioning clip on the inner tube or on the outer tube. | 02-17-2011 |
| 20110292195 | Visual field apparatus for an endoscope - A visual field apparatus for an image transmission apparatus includes a channel that connects the proximal end and the distal end of the visual field apparatus for inputting the image transmission apparatus and an optical device on the distal end of the channel that is configured to influence the visual field of the image transmission apparatus. | 12-01-2011 |
Kirsten Dahmen, Mannheim DE
| Patent application number | Description | Published |
|---|---|---|
| 20080249307 | Method for Producing Ethylene Amines - Processes are described comprising: (i) providing a reactant comprising 1,2-dichloroethane; and (ii) reacting the reactant with ammonia to form a reaction product comprising one or more ethylene amines and hydrogen chloride, wherein the reaction is carried out in the presence of an organic, nitrogen- or phosphorus-containing compound which reacts with the hydrogen chloride to form an ionic liquid. | 10-09-2008 |
| 20080262266 | Method for the Production of Xylyendiamine - Process for preparing o-, m- or p-xylylenediamine by hydrogenation of o-, m- or p-phthalonitrile in the presence of a heterogenous catalyst, which comprises feeding a solution of the phthalonitrile in the corresponding isomer of crude xylylenediamine into the hydrogenation reactor, with the crude xylylenediamine having a purity in the range from 85 to 99.7% by weight and a content of higher boilers in the range from 0.3 to 15% by weight. | 10-23-2008 |
| 20090020407 | METHOD FOR PRODUCING PURE XYLYLENEDIAMINE (XDA) - A process comprising: continuously distilling a crude xylylenediamine in a column to form a pure xylylenediamine and a bottom product, wherein the column comprises a distillation column having a side draw and the distillation column is operated under a reduced pressure and a bottom temperature of 185° C. or less; drawing off the pure xylylenediamine from the side draw; evaporatively concentrating the bottom product of the distillation column in an additional evaporation stage to form a condensate; and returning the condensate into the distillation column | 01-22-2009 |
| 20100105940 | FULL CATALYST, PRODUCTION THEREOF, AND USE THEREOF IN AN AMMOXIDATION PROCESS - Catalysts comprising: (a) a support material comprising a component selected from the group consisting of aluminum oxide, silicon dioxide, aluminum silicate, magnesium silicate, titanium dioxide, zirconium dioxide, thorium dioxide, silicon carbide, and mixtures thereof; and (b) an active material comprising a mixture of vanadium (V) and antimony (Sb) and tungsten (W) and/or molybdenum (Mo), and optionally, at least one alkali metal, wherein the vanadium, antimony, tungsten and/or molybdenum and at least one alkali metal are each present in oxidic form; wherein the support material is provided in a form selected from the group of shapes consisting of spherical or approximately spherical and having a diameter of 2 to 10 mm, tubular or rod-shaped and having a diameter of 1 to 10 mm and a length of 2 to 20 mm, granular having a maximum diameter of 2 to 20 mm, and combinations thereof; and wherein the catalyst is diluted with an inert material; along with processes for preparing such catalysts and their use in preparing nitriles via gas phase ammonoxidation. | 04-29-2010 |
Michael Dahmen, Regensburg DE
| Patent application number | Description | Published |
|---|---|---|
| 20110061343 | Method and Device for Stretch Blow Molding or Blow Molding and Filling Sterile Containers - A method for blow molding and filling sterile containers of preforms in a container treatment device containing a blow module, in which the preforms are transferred from a heating device to the blow module via transport devices, and the containers are transported to a filling machine and filled, where a sterilization treatment is performed each at the preforms and the containers, a main sterilization treatment is performed at the preforms between the heating device and the blow module, and only a subsequent sterilization treatment is performed at the containers on the transport path to the filling machine. Further, a device having a main sterilization module between the heating device and the blow module, and a subsequent sterilization module between the blow module and the filling machine. | 03-17-2011 |
| 20110133369 | APPARATUS FOR SHAPING PLASTIC PREFORMS, COMPRISING A STERILE CHAMBER - An apparatus ( | 06-09-2011 |
| 20110133370 | DEVICE AND METHOD FOR STERILISING PLASTIC PARISONS - A device for producing plastic containers may include a heating element for heating plastic parisons, a transport system for transporting the plastic parisons along a pre-defined transport path, and a shaping element arranged along the transport path, downstream of the heating device. The shaping element shapes the plastic parisons to form plastic containers. The device has a sterilisation element that applies a free-flowing medium to a wall of the plastic parisons in order to sterilise said wall, the sterilisation device being arranged along the transport path of the containers such that the sterilisation takes place after the heating process applied to the containers in the heating device and before the end of the shaping process in the shaping element. | 06-09-2011 |
Michael Dahmen, Hamburg DE
| Patent application number | Description | Published |
|---|---|---|
| 20110286899 | APPARATUS AND METHOD OF CLEANING GAS IN BLOW MOULDING MACHINES - An apparatus ( | 11-24-2011 |
| 20110309557 | BLOW MOULDING MACHINE WITH FEED LINE STERILIZATION - An apparatus for shaping plastics material pre-forms to form plastics material containers may include a conveying device which conveys the containers along a pre-set conveying path, a stressing device which acts upon the containers with a flowable medium in order to expand them, a reservoir for storing the flowable medium, and a supply device which delivers the flowable medium from the reservoir to the container. A valve device controls the supply of the flowable medium into the containers, in order to expand the containers. The apparatus includes a first feed line in order to supply a flowable sterilization medium to the supply line between the reservoir and the container to be treated or in a removal line for the flowable medium, which removes the flowable medium from the containers. | 12-22-2011 |
Nicholaus Dahmen, Bruchsal DE
| Patent application number | Description | Published |
|---|---|---|
| 20090308726 | PROCESS AND DEVICE FOR CONVERTING BIOMASS TO GASEOUS PRODUCTS - A device for converting biomass with a water content of at least 50% to gaseous products includes a reactor filled at least partially with a packing including at least one filler body for accommodating supercritical water and a hydrothermal molten salt. A heater is arranged to heat up the reactor and its content. A first feeding pipe is coupled to the reactor to feed water and salt solution into the reactor. A second feeding pipe is coupled to the reactor to feed to biomass into the reactor. A discharge pipe is coupled to the reactor to discharge gaseous products from the reactor. An outlet is proved in the bottom of the reactor for removing portions of the molten salt. | 12-17-2009 |
Nicolaus Dahmen, Bruchsal DE
| Patent application number | Description | Published |
|---|---|---|
| 20100037520 | METHOD AND DEVICE FOR CONVERTING BIOMASS INTO GASEOUS PRODUCTS - A method for converting biomass having a water content of at least 50% into gaseous products includes providing a reactor containing supercritical water and a salt melt. The salt melt includes at least one of a salt and a salt mixture. The reactor and the salt melt are heated to the reaction temperature. The biomass is heated to a preheat temperature. The biomass heated to the preheat temperature is fed into the salt melt. The biomass is heated to the reaction temperature so as to commence a conversion of the biomass into the gaseous products, so as to release from the biomass at least one additional salt into the salt melt. An amount of the salt melt containing at least a portion of the at least one additional salt is withdrawn from the reactor and the amount of the withdrawn salt melt is replaced with a fresh salt solution. The gaseous products are removed from the reactor. | 02-18-2010 |
Peter Dahmen, Nuess DE
| Patent application number | Description | Published |
|---|---|---|
| 20090149455 | Use of Triazolopyrimidines for Controlling Plant Diseases on Legumes - The triazolopyrimidines of the general formula (I) | 06-11-2009 |
Peter Dahmen, Leverkusen DE
| Patent application number | Description | Published |
|---|---|---|
| 20100056798 | Substituted thien-3-yl-sulphonylamino(thio)carbonyl-triazolin(ethi)ones - The invention relates to processes for the preparation of compounds of general formula (I) and salts thereof: | 03-04-2010 |
Stefan Dahmen, Freinsheim DE
| Patent application number | Description | Published |
|---|---|---|
| 20120077044 | BIODISINTEGRATABLE COMPOSITE FOILS - The use of an aqueous polyurethane dispersion adhesive is described for producing biodisintegratable composite foils where at least two substrates are adhesive-bonded to one another with use of the polyurethane dispersion adhesive, where at least one of the substrates is a biodisintegrable polymer foil. At least 60% by weight of the polyurethane is composed of diisocyanates, polyesterdiols, and at least one bifunctional carboxylic acid selected from dihydroxycarboxylic acids and diaminocarboxylic acids. | 03-29-2012 |
Stefan Dahmen, Aachen DE
| Patent application number | Description | Published |
|---|---|---|
| 20090247771 | PROCESS FOR OBTAINING ENANTIOMERS OF DULOXETINE PRECURSORS - The present invention is directed to a process for the preparation of an enantiomerically enriched compound of formula II | 10-01-2009 |
Thomas Rudolf Dahmen, Erftstadt DE
| Patent application number | Description | Published |
|---|---|---|
| 20090283569 | SYSTEM AND METHOD FOR MONITORING WELDING - A system for monitoring a weld process is provided. The system includes an ultrasonic wave generator adapted to deliver an ultrasonic signal to a target material during a weld operation. The system also includes a pair of ultrasonic receiver elements with opposite directions of polarization relative to each other, the ultrasonic receiver elements configured to receive the ultrasonic signal propagated through the target material. The system further includes an electronic circuit coupled to the pair of ultrasonic receiver elements. The electronic circuit is configured to receive respective signals from the pair of ultrasonic receiver elements; wherein the respective signals comprise the ultrasonic signal and a noise signal. The electronic circuit is also configured to output the ultrasonic signal devoid of the noise signal. The system also includes a signal processor coupled to the electronic circuit, wherein the signal processor is configured to determine a quality level of a weld created during the weld operation by extracting data corresponding to the ultrasonic signal and comparing the data to a profile that corresponds to an acceptable quality level. | 11-19-2009 |