Inventor · disambiguated record
Kazumasa Umeya
Also filed as: UMEYA KAZUMASA
5 granted patents·72 citations·filing 1975–1992
81Inventor score
Top patents by PatentIndex Score
5 records- 0166US4245146AHeating element made of PTC ceramic materialTDK ELECTRONICS CO LTD·Filed 1978·Granted Jan 13, 1981·23 cites·3 claims
- 0264US4096098ASemiconductor ceramic compositionTDK ELECTRONICS CO LTD·Filed 1975·Granted Jun 20, 1978·19 cites·7 claims
- 0360US4654510APTC heating apparatusTDK CORP·Filed 1979·Granted Mar 31, 1987·18 cites·4 claims
- 0436US5296424ASystem of dielectric ceramic compositions suitable for microwave applicationsGTE CONTROL DEVICES INC·Filed 1992·Granted Mar 22, 1994·5 cites·17 claims
- 0536US5030386ABaTiO3 ceramic temperature sensor with improved positive temperature coefficient of resistanceGTE PROD CORP·Filed 1988·Granted Jul 9, 1991·7 cites·7 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →