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Dufresne, FR

Pierre Dufresne, Valence FR

Patent application numberDescriptionPublished
20080312076Process for sulfurization or presulfurization of solid particles of a catalyst or an adsorbent - The invention relates to a process for incorporating sulfur in the porosity of the solid particles of a catalyst for the conversion of hydrocarbons or an adsorbent. This process is carried out off-site in the presence of hydrogen sulfide that is pure or diluted in hydrogen or nitrogen, a process in which said particles are made to rise or fall in a sulfur incorporation zone that comprises at least one vibratory helical coil that is essentially tubular in shape and that comprises at least two turns, whereby said particles are subjected to a temperature profile over the majority of their path in said coil and whereby said particles are brought into contact with at least one fluid on at least one portion of their path.12-18-2008
20090000992COLOUR SORTING OF CATALYST OR ADSORBENT PARTICLES - Process for separating at least one type of catalyst or adsorbent particles having similar colours characterized in that such particles undergo an oxidative heating treatment for generating particle of different colours, and then particles are separated using a colour sorting process for separating at least one type of particles.01-01-2009
20100105540PROCESS FOR THE REGENERATION OF CATALYSTS FOR THE TREATMENT OF HYDROCARBONS - The present invention provides a process for the regeneration of a catalyst comprising at least one metal from Group VIII and at least one metal from Group VIB which are deposited on a refractory oxide support, comprising: 04-29-2010
20100105541PROCESS FOR THE REGENERATION OF CATALYSTS FOR THE TREATMENT OF HYDROCARBONS - A subject-matter of the present invention is a process for the regeneration of a catalyst comprising at least one metal from Group VIII and at least one metal from Group VIB which are deposited on a refractory oxide support, comprising: 04-29-2010
20110092360PROCESS FOR SULFURIZING HYDROCARBON TREATMENT CATALYSTS - The present invention relates to a process for sulfurizing a hydrocarbon treatment catalyst, comprising: 04-21-2011
20110098175PROCESS FOR SULFURIZING HYDROCARBON TREATMENT CATALYSTS - The present invention relates to a process for sulfurizing a hydrocarbon treatment catalyst, comprising: 04-28-2011

Patent applications by Pierre Dufresne, Valence FR

Thierry Dufresne, Opio FR

Patent application numberDescriptionPublished
20090076862AUTOMATED SPLIT TICKETING - An enhanced travel search tool aimed at providing travel opportunities includes a ticket splitter operating from a list of flight connections provided by a front-end flight search engine. The ticket splitter comprises a unit for valuating all ticket partitions generated from the provided list of connection flights and a tree of split criteria updated in a cache for determining the partitions and attributing to each partition a probability value of obtaining a split-ticket solution. The ticket splitter also includes a unit for selecting those of the valuated partitions that have a probability value higher than a defined threshold and provides a sorted list of recommended partitions to a back-end fare search engine to price all the selected partitions including a reference single-ticket solution. Travel search tool offering of travel opportunities is enhanced by automatically including multi-ticket travel solutions.03-19-2009
20100131553GLOBAL DISTRIBUTION SYSTEM FOR SEARCHING BEST TRAVEL DEALS - A global distribution system (GDS) organized for searching travel deals from a plurality of travel vendor fare databases (05-27-2010
20100293012METHOD AND SYSTEM FOR DETERMINING AN OPTIMAL LOW FARE FOR A TRIP - A method for determining an optimal fare for a trip comprising a departure location, an arrival location, the method comprises the following steps: sending a request for the trip wherein the request comprises a departure location, an arrival location and a corresponding fare for the trip; automatically modifying the request by searching in a predetermined database to determine a set of additional requests wherein each comprises at least one of the departure location, the arrival location or one or more additional locations which may form at least a part of the requested route wherein the predetermined database comprises said additional requests and a corresponding fare for each additional request; selecting one or more additional requests to form one or more alternative requests which include at least on of the departure location or the arrival location as the request; calculating the up to date fares for each alternative request in order to determine a resulting fare for each alternative request; comparing the fare and the resulting fares in order to determine the lowest resulting fare for the trip.11-18-2010
20100299318ONLINE TRAVEL RESERVATION SYSTEM AND METHOD DELIVERING RESTRICTION-AWARE TRAVEL OPPORTUNITIES - An online reservation system including a fare search engine is described. The system includes a database of published fares, a database of rules attached to the published fares and a fare family solver to categorize the published fares into sets of predefined generic fare families on the basis of the rules attached to the published fares. The fare family solver further includes a generic partitioning fare family database holding the attributes of each predefined generic fare family allowing to determine to which fare family the published fares belong to. The attributes of each predefined generic fare family are first set up by a fare family composer operated by an administrator of the system.11-25-2010
20110145025MULTI-DESTINATION TRIP SELECTION - A method of selecting at least one trip from a plurality of possible trips, each of the plurality of possible trips being for travel from an origin location and comprising stops at a plurality of destinations. The method is performed in computer apparatus configured to execute the method. The method comprises: determining a fare for each of a plurality of different leg options for each leg, each leg being between one of: the origin location and a destination; and two destinations; selecting a plurality of candidate leg options for each leg based on comparative amounts of the determined fares, the plurality of candidate leg options being fewer in number than the plurality of different leg options; and determining at least one trip based on the plurality of candidate leg options for each leg.06-16-2011
20110167051SEARCH ENGINE AND ASSOCIATED METHOD - A method of searching for a entity amongst a plurality of entities, wherein all the entities are linked by at least one criterion in common and have a plurality of data formats, wherein each entity comprises a set of data which can be searched by means of criteria entered by a user; and wherein each entity has a data format; and further wherein a specific one of the data formats defines a standard record format; the method comprising the steps of: determining the data format of an entity; if the data format of the entity does not match the standard record format, passing the entity to a pre-processing engine; if the data format of the entity does match the standard record format, passing standard record format data of the entity to a main processing engine; in the pre-processing engine comparing the entity data format to the standard record format and applying a conversion to the entity set of data; converting the entity set of data to the standard record format based on the conversion to form a converted set of data; passing the converted set of data to the main processing engine; in the main processing engine receiving the standard record format entity set of data and the converted set of data; and producing a set of results combining the converted set of data and the standard record format data for selection by a user of a preferred entity.07-07-2011

Patent applications by Thierry Dufresne, Opio FR

Thierry Dufresne, Nice FR

Patent application numberDescriptionPublished
20080270254Method and System of Building Actual Travel Fares - A method of building actual travel fares in a computer, from fare databases, is disclosed. A graph of nodes representing travel destinations is built which comprises edges connecting pairs of nodes. Each edge references a lowest travel fare. Also, a tree of fares is built for each graph edge. Trees comprise at least a root node holding the lowest travel fare of the corresponding graph edge. They possibly include more nodes comprising a context key and an associated travel fare. Trees are organized to have children nodes holding a travel fare equal to or larger than travel fare of a parent node. Thus, less expensive fare paths can efficiently be extracted since graph edges, included in the fare paths, reference the associated trees of fares and are gone through in ascending order of their lowest fare values. A learning entity is used to build and update the trees of fares.10-30-2008