Inventor · disambiguated record
Keiji Nakayama
Also filed as: NAKAYAMA KEIJI
18 granted patents·1 pending application·218 citations·filing 1977–2020
94Inventor score
Top patents by PatentIndex Score
19 records- 0185US10030028B2Method for producing a spirooxindole derivativeDAIICHI SANKYO CO LTD·Filed 2014·Granted Jul 24, 2018·4 cites·13 claims
- 0280US6799472B2Method of and apparatus for measuring and evaluating material strength by detecting charged particlesNAT INST OF ADVANCED IND SCIEN·Filed 2002·Granted Oct 5, 2004·23 cites·10 claims
- 0380US5139311AAutomotive seat with belt buckle holderIKEDA BUSSAN CO·Filed 1990·Granted Aug 18, 1992·53 cites·10 claims
- 0480US4639062ACircuit board connectionSHARP KK·Filed 1986·Granted Jan 27, 1987·50 cites·3 claims
- 0577US10851111B2Method for producing a spirooxindole derivativeDAIICHI SANKYO CO LTD·Filed 2018·Granted Dec 1, 2020·1 cites·13 claims
- 0676US7189847B2Process for producing benzoxazine derivative and production intermediate thereofDAIICHI SEIYAKU CO·Filed 2005·Granted Mar 13, 2007·3 cites·8 claims
- 0774US4831398APhotographic film package and method of making the sameFUJI PHOTO FILM CO LTD·Filed 1987·Granted May 16, 1989·13 cites·9 claims
- 0870US6872823B1Process for producing benzoxazine derivative and production intermediate thereofDAIICHI SEIYAKU CO·Filed 2000·Granted Mar 29, 2005·6 cites·17 claims
- 0969US11884678B2Method for producing a spirooxindole derivativeDAIICHI SANKYO CO LTD·Filed 2020·Granted Jan 30, 2024·0 cites·6 claims
- 1054US7087778B2Process for producing benzoxazine derivative and production intermediate thereofDAIICHI SEIYAKU CO·Filed 2004·Granted Aug 8, 2006·0 cites·73 claims
- 1152US7199260B2Process for reductive dehalogenationDAIICHI SEIYAKU CO·Filed 2004·Granted Apr 3, 2007·1 cites·20 claims
- 1252US5564196ARoll with composite coatsNOMURA TECHNO RESEARCH KABUSHI·Filed 1994·Granted Oct 15, 1996·17 cites·21 claims
- 1352US2005272797A1Processes for preparation of bicyclic compounds and intermediates thereforDAIICHI SEIYAKU CO·Filed 2005·Application pending·0 cites
- 1449US4973104ACar seatIKEDA BUSSAN CO·Filed 1989·Granted Nov 27, 1990·23 cites·4 claims
- 1548US4141853ALiquid crystal materialSHARP KK·Filed 1977·Granted Feb 27, 1979·10 cites·2 claims
- 1646US7074837B2Processes for preparation of bicyclic compounds and intermediates thereforDAIICHI SEIYAKU CO·Filed 2001·Granted Jul 11, 2006·0 cites·3 claims
- 1737US4633305AMethod of recording image signals of photographic picturesFUJI PHOTO FILM CO LTD·Filed 1985·Granted Dec 30, 1986·5 cites·6 claims
- 1836US4383737ADAP Type liquid crystal display with means for obscuring viewing angle related changes in colorSHARP KK·Filed 1979·Granted May 17, 1983·5 cites·5 claims
- 1927US6059881ACoater blades and their manufacturing methodsNOMURA TECHNO RESEARCH KABUSHI·Filed 1993·Granted May 9, 2000·4 cites·3 claims
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