Inventor · disambiguated record
Keizo Tanikawa
Also filed as: TANIKAWA KEIZO
26 granted patents·349 citations·filing 1986–2000
97Inventor score
Top patents by PatentIndex Score
26 records- 0194US5314883A5-heteroarylamino-6-oxy-substituted 3(2H)-pyridazinonesNISSAN CHEMICAL IND LTD·Filed 1992·Granted May 24, 1994·59 cites·15 claims
- 0282US5202323A5-arylmethylamino-6-oxy-substituted 3(2h)-pyridazinonesNISSAN CHEMICAL IND LTD·Filed 1991·Granted Apr 13, 1993·21 cites·8 claims
- 0381US5846991APyrazole derivativesNISSAN CHEMICAL IND LTD·Filed 1997·Granted Dec 8, 1998·23 cites·8 claims
- 0480US5721264APyrazole derivativesNISSAN CHEMICAL IND LTD·Filed 1994·Granted Feb 24, 1998·17 cites·8 claims
- 0577US4783462A3(2H)pyridazinone, and anti-allergic agent containing itNISSAN CHEMICAL IND LTD·Filed 1986·Granted Nov 8, 1988·25 cites·29 claims
- 0676US5840909APyrazole derivativesNISSAN CHEMICAL IND LTD·Filed 1997·Granted Nov 24, 1998·17 cites·11 claims
- 0776US5817828APyrazole derivativesNISSAN CHEMICAL IND LTD·Filed 1997·Granted Oct 6, 1998·17 cites·8 claims
- 0876US5098900A3(2h)pyridazinone, process for its preparation and anti-allergic agent containing itNISSAN CHEMICAL IND LTD·Filed 1988·Granted Mar 24, 1992·24 cites·11 claims
- 0975US4892947A3(2H)Pyridazinone, process for its preparation and anti-allergic agent containing itNISSAN CHEMICAL IND LTD·Filed 1986·Granted Jan 9, 1990·12 cites·29 claims
- 1073US6589983B1Benzopyran derivativeNISSAN CHEMICAL IND LTD·Filed 2000·Granted Jul 8, 2003·8 cites·9 claims
- 1172US5939045AOrganic bismuth derivatives for X-ray imagingNISSAN CHEMICAL IND LTD·Filed 1995·Granted Aug 17, 1999·39 cites·12 claims
- 1271US4978665A3(2H)pyridazinone, and antagonistic agent against SRS-A containing itNISSAN CHEMICAL IND LTD·Filed 1988·Granted Dec 18, 1990·17 cites·29 claims
- 1369US6555574B14-oxybenzopyran derivativeNISSAN CHEMICAL IND LTD·Filed 2000·Granted Apr 29, 2003·5 cites·8 claims
- 1469US5318968A5-heteroarylamino-6-oxy-substituted 3(2H)-pyridazinonesNISSAN CHEMICAL IND LTD·Filed 1992·Granted Jun 7, 1994·9 cites·5 claims
- 1564US6677371B14-oxybenzopyran derivativeNISSAN CHEMICAL IND LTD·Filed 2000·Granted Jan 13, 2004·3 cites·6 claims
- 1662US6114369ABenzimidazole compoundNISSAN CHEMICAL IND LTD·Filed 1998·Granted Sep 5, 2000·10 cites·10 claims
- 1757US5750523APyridazinone derivativesNISSAN CHEMICAL IND LTD·Filed 1995·Granted May 12, 1998·6 cites·9 claims
- 1854US5011839A3(2H)pyridazinones for antagonistic agent against srs-aNISSAN CHEMICAL IND LTD·Filed 1989·Granted Apr 30, 1991·10 cites·8 claims
- 1952US5856327APyridazinone derivativesNISSAN CHEMICAL IND LTD·Filed 1997·Granted Jan 5, 1999·4 cites·8 claims
- 2051US5730953ATris(substituted phenyl) bismuth derivativesNISSAN CHEMICAL IND LTD·Filed 1994·Granted Mar 24, 1998·5 cites·11 claims
- 2150US5968967APyrazolones derivativesNISSAN CHEMICAL IND LTD·Filed 1996·Granted Oct 19, 1999·5 cites·12 claims
- 2245US6066631AChroman derivativesNISSAN CHEMICAL IND LTD·Filed 1999·Granted May 23, 2000·3 cites·28 claims
- 2342US5728702APyridazinone derivatives with pharmaceutical activityNISSAN CHEMICAL IND LTD·Filed 1994·Granted Mar 17, 1998·4 cites·16 claims
- 2441US5798357AAgent for prophylaxis and treatment of thromboxane A2 -mediated diseasesGREEN CROSS CORP·Filed 1995·Granted Aug 25, 1998·5 cites·6 claims
- 2534US5929074APyridazinone derivatives with pharmaceutical activityNISSAN CHEMICAL IND LTD·Filed 1997·Granted Jul 27, 1999·1 cites·7 claims
- 2631US6486178B1Indane derivativesNISSAN CHEMICAL IND LTD·Filed 1999·Granted Nov 26, 2002·0 cites·12 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →