Assignee
SANKO KAIHATSU KAGAKU KENK
JP·19 granted patents·176 citations·filing 1980–1998
Top patents by PatentIndex Score
19 records- 0190US4280951AFlame retardantsSANKO KAIHATSU KAGAKU KENK·Filed 1980·Granted Jul 28, 1981·43 cites·6 claims
- 0287US4317769AFlame retardantsSANKO KAIHATSU KAGAKU KENK·Filed 1980·Granted Mar 2, 1982·19 cites·7 claims
- 0385US4973720AProcess for the preparation of p-benzoquinoneSANKO KAIHATSU KAGAKU KENK·Filed 1988·Granted Nov 27, 1990·25 cites·5 claims
- 0474US5041604AProcess for producing di(aryloxy)alkaneSANKO KAIHATSU KAGAKU KENK·Filed 1990·Granted Aug 20, 1991·14 cites·3 claims
- 0574US4618693ACyclic organic phosphorus compound and process for producing sameSANKO KAIHATSU KAGAKU KENK·Filed 1984·Granted Oct 21, 1986·18 cites·2 claims
- 0670US4535190APhenolic compounds and a heat-sensitive recording material containing the sameSANKO KAIHATSU KAGAKU KENK·Filed 1984·Granted Aug 13, 1985·7 cites·2 claims
- 0766US5393332AColor developer for pressure-sensitive recording sheetsSANKO KAIHATSU KAGAKU KENK·Filed 1993·Granted Feb 28, 1995·9 cites·11 claims
- 0866US4542395AHeat-sensitive recording materialSANKO KAIHATSU KAGAKU KENK·Filed 1984·Granted Sep 17, 1985·6 cites·1 claims
- 0965US5049685ANuclear substituted salicylic acids and their saltsSANKO KAIHATSU KAGAKU KENK·Filed 1989·Granted Sep 17, 1991·7 cites·6 claims
- 1052US5248828AMethod for preparing sulfonesSANKO KAIHATSU KAGAKU KENK·Filed 1992·Granted Sep 28, 1993·5 cites·4 claims
- 1142US5107006AClathrate compounds of nuclear-substituted salicyclic acid saltsSANKO KAIHATSU KAGAKU KENK·Filed 1990·Granted Apr 21, 1992·2 cites·7 claims
- 1242US4950330AAqueous dispersion of a developer for pressure-sensitive recording sheet and a process for producing the sameSANKO KAIHATSU KAGAKU KENK·Filed 1989·Granted Aug 21, 1990·4 cites·16 claims
- 1341US5705452ASulfonyl compound and thermal-sensitive recording medium using the sameSANKO KAIHATSU KAGAKU KENK·Filed 1995·Granted Jan 6, 1998·5 cites·2 claims
- 1437US5118443ADeveloper for pressure-sensitive recording sheets, aqueous dispersion of the developer and method for preparing the developerSANKO KAIHATSU KAGAKU KENK·Filed 1991·Granted Jun 2, 1992·2 cites·5 claims
- 1536US5164001AMethod for preparing aqueous dispersion of developer and pressure-sensitive recording paperSANKO KAIHATSU KAGAKU KENK·Filed 1990·Granted Nov 17, 1992·2 cites·10 claims
- 1634US6107506AProcess for producing 2-(2-hydroxyphenyl) phenylphosphinic acid and derivativesSANKO KAIHATSU KAGAKU KENK·Filed 1998·Granted Aug 22, 2000·3 cites·8 claims
- 1734US6040470ASulfonyl compound and thermalsensitive recording medium using the sameSANKO KAIHATSU KAGAKU KENK·Filed 1998·Granted Mar 21, 2000·2 cites·2 claims
- 1834US5840652ASulfonyl compound and thermalsensitive recording medium using the sameSANKO KAIHATSU KAGAKU KENK·Filed 1997·Granted Nov 24, 1998·2 cites·2 claims
- 1934US5235084AMethod for preparing sulfonesSANKO KAIHATSU KAGAKU KENK·Filed 1992·Granted Aug 10, 1993·1 cites·5 claims
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