L'Etat Francais represente par le Ministre des Postes et Telecommunications Centre National d'Etudes des Telecommunications
Patent Owner
Stats
- 1 US PATENTS IN FORCE
- 0 US APPLICATIONS PENDING
- Jul 13, 1993 most recent publication
Details
- 1 Issued Patents
- 0 Issued in last 3 years
- 0 Published in last 3 years
- 1,984 Total Citation Count
- Jan 23, 1980 Earliest Filing
- 35 Expired/Abandoned/Withdrawn Patents
Patent Activity in the Last 10 Years
Technologies
Intl Class
Technology
Matters
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Top Patents (by citation)
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Recent Publications
- No Recent Publications to Display
Recent Patents
Patent #
Title
Filing Date
Issue Date
Intl Class
5218637 Method of transferring a secret, by the exchange of two certificates between two microcomputers which establish reciprocal authorizationJun 11, 91Jun 08, 93[H04K]
Expired/Abandoned/Withdrawn Patents
Patent #
Title
Status
Filing Date
Issue/Pub Date
Intl Class
5227695 Device for coupling microwave energy with an exciter and for distributing it therealong for the purpose of producing a plasmaExpiredMar 30, 92Jul 13, 93[H04H]
5214678 Digital transmission system using subband coding of a digital signalExpiredMay 31, 90May 25, 93[H04B]
5099479 End equipment for and method of setting-in communications via channels selected in a multiplex linkExpiredMar 19, 90Mar 24, 92[H04J]
5083013 System for remote information interchange between a portable object and a stationExpiredDec 18, 89Jan 21, 92[G06K]
5042073 Signature verification method and system with optimization of static parametersExpiredJun 27, 90Aug 20, 91[G06K]
5039627 Method of producing a quasi-flat semiconductor device capable of a multi-wavelength laser effect and the corresponding deviceExpiredJan 17, 90Aug 13, 91[H01L]
4974186 Generalized digital multiplier and digital filter using said multiplierExpiredJan 24, 89Nov 27, 90[G06F]
4970675 Multiplier for binary numbers comprising a very high number of bitsExpiredFeb 15, 89Nov 13, 90[G06F]
4963861 Electroluminescent memory display having multi-phase sustaining voltagesExpiredJan 11, 90Oct 16, 90[G09G]
4956768 Wideband server, in particular for transmitting music or imagesExpiredFeb 24, 88Sep 11, 90[G06F]
4955030 Method of manufacturing a semiconductor structure suitable for producing a multi-wavelength laser effect, and device obtained therebyExpiredJun 13, 89Sep 04, 90[H01S]
4944244 Apparatus for the production of preforms for optical fibersExpiredMar 14, 89Jul 31, 90[C23C]
4938836 Process for locally increasing the refractive indexes of an electrooptical material usable in guided optics and material obtained by this processExpiredMar 23, 88Jul 03, 90[C30B]
4925811 Method of manufacturing a semiconductor structure suitable for producing a multi-wavelength laser effectExpiredJun 30, 88May 15, 90[H01L]
4924189 Two-port switched capacitor filter netowrk with linearized phase/frequency responseExpiredAug 24, 88May 08, 90[H03H]
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