Inventor · disambiguated record
Tetsuo Masuyama
Also filed as: MASUYAMA TETSUO
12 granted patents·269 citations·filing 1975–2003
92Inventor score
Top patents by PatentIndex Score
12 records- 0195US4423252AProcess for preparing bisphenolsMITSUBISHI CHEM IND·Filed 1981·Granted Dec 27, 1983·63 cites·5 claims
- 0293US4478956AProcess for preparing bisphenols using pyridinealkanethiol derivatized sulphonated cation exchange resinsMITSUBISHI CHEM IND·Filed 1983·Granted Oct 23, 1984·39 cites·3 claims
- 0385US5092361AInline type check valveNIPPON PISTON RING CO LTD·Filed 1990·Granted Mar 3, 1992·52 cites·7 claims
- 0478US6860485B2Piston ringNIPPON PISTON RING CO LTD·Filed 2003·Granted Mar 1, 2005·22 cites·5 claims
- 0571US4556751ACatalytic isomerization process of dimethylnaphthalenesMITSUBISHI CHEM IND·Filed 1984·Granted Dec 3, 1985·10 cites·8 claims
- 0669US4041082AProcess for producing aldehydesMITSUBISHI CHEM IND·Filed 1975·Granted Aug 9, 1977·19 cites·18 claims
- 0766US6261389B1Synchronizer ringNIPPON PISTON RING CO LTD·Filed 1998·Granted Jul 17, 2001·27 cites·3 claims
- 0853US5900559ASynchronizer ringNIPPON PISTON RING CO LTD·Filed 1997·Granted May 4, 1999·16 cites·15 claims
- 0953US4405823AProcess for the production of phenolsMITSUBISHI CHEM IND·Filed 1982·Granted Sep 20, 1983·8 cites·10 claims
- 1044US4165441AProcess for the preparation of styreneMITSUBISHI CHEM IND·Filed 1978·Granted Aug 21, 1979·6 cites·15 claims
- 1136US5861565ASynchronizer ringNIPPON PISTON RING CO LTD·Filed 1997·Granted Jan 19, 1999·7 cites·6 claims
- 1228US4740289AProcess for the hydrogenolysis of a coal liquid bottomMITSUBISHI CHEM IND·Filed 1987·Granted Apr 26, 1988·0 cites·14 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →