Inventor · disambiguated record
Kenji Oguma
Also filed as: OGUMA KENJI
14 granted patents·260 citations·filing 1996–2006
94Inventor score
Top patents by PatentIndex Score
14 records- 0190US6516205B1Portable terminal with bus manager switching functionNEC CORP·Filed 2000·Granted Feb 4, 2003·73 cites·9 claims
- 0280US6818409B2Isolation and purification of Clostridium botulinum toxinsEISAI CO LTD·Filed 2002·Granted Nov 16, 2004·43 cites·12 claims
- 0378US7200470B2Train detection system and a train detection methodHITACHI LTD·Filed 2006·Granted Apr 3, 2007·8 cites·4 claims
- 0476US6604031B2Train detection system and a train detection methodHITACHI LTD·Filed 2002·Granted Aug 5, 2003·25 cites·8 claims
- 0570US7269487B2Method for train positioningHITACHI LTD·Filed 2004·Granted Sep 11, 2007·33 cites·7 claims
- 0664US6374165B2Railway information transmission method and systemHITACHI LTD·Filed 2001·Granted Apr 16, 2002·9 cites·26 claims
- 0762US6317664B2Train detection system and a train detection methodHITACHI LTD·Filed 2001·Granted Nov 13, 2001·12 cites·6 claims
- 0862US6230085B1Train detection system and a train detection methodHITACHI LTD·Filed 1998·Granted May 8, 2001·13 cites·14 claims
- 0960US6829526B2Train detection system and a train detection method cross reference to related applicationHITACHI LTD·Filed 2003·Granted Dec 7, 2004·10 cites·7 claims
- 1058US6470244B2Train detection systemHITACHI LTD·Filed 2001·Granted Oct 22, 2002·9 cites·12 claims
- 1150US7336970B2Portable communication terminal capable of communicating with information terminal and method of converting control protocol of the same between different kinds of networksNEC CORP·Filed 2003·Granted Feb 26, 2008·1 cites·16 claims
- 1248US7027901B2Transmitter and receiver device for train detectionHITACHI LTD·Filed 2004·Granted Apr 11, 2006·4 cites·4 claims
- 1343US6230086B1Railway information transmission method and systemHITACHI LTD·Filed 1996·Granted May 8, 2001·16 cites·15 claims
- 1432US6061220APower switching circuit of network-connected deviceNEC CORP·Filed 1999·Granted May 9, 2000·4 cites·7 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →