FUJITSU DENSO LTD.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF 1101

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
D393837 Fingerprint distinction readerJun 04, 96Apr 28, 98[1402]
5726869 Synchronous rectifier type DC-to-DC converter in which a saturable inductive device is connected in series with a secondary-side switching deviceOct 02, 96Mar 10, 98[H02M]
D389817 Fingerprint distinction readerJun 04, 96Jan 27, 98[1402]
D382695 Element of a shoeJun 05, 96Aug 26, 97[0299]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6430063 Control switch for synchronous rectification circuit of DC-DC converterExpiredApr 27, 01Aug 06, 02[H02M]
2002/0067,529 Passive optical network transmission system, ATM-passive optical network transmission system, optical network unit of ATM-passive optical network transmission system, and optical line terminator of ATM-passive optical network transmission systemAbandonedAug 20, 01Jun 06, 02[H04B, H04J]
6361177 Optical device fixing deviceExpiredDec 11, 00Mar 26, 02[G02B]
6314196 Fingerprint registering method and fingerprint checking deviceExpiredMar 07, 97Nov 06, 01[G06K]
2001/0036,301 Fingerprint registering method and fingerprint checking deviceAbandonedJun 22, 01Nov 01, 01[G06K]
6275601 Fingerprinting judging methodExpiredMay 11, 00Aug 14, 01[G06K]
6144511 Optical device fixing deviceExpiredFeb 28, 97Nov 07, 00[G02B, G03B]
6122395 Fingerprint dictionary image renewing methodExpiredFeb 10, 99Sep 19, 00[G06K]
5995641 Fingerprint identification device and method of using sameExpiredMar 05, 97Nov 30, 99[G06K]
4912621 Current-balance switching regulatorExpiredFeb 21, 89Mar 27, 90[H02M]

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