Inventor · disambiguated record
Hirotsugu Izumiya
Also filed as: IZUMIYA HIROTSUGU
8 granted patents·93 citations·filing 1985–1989
87Inventor score
Technology areasH01J
Files withNGK INSULATORS LTD8
Top patents by PatentIndex Score
8 records- 0174US4808881ACeramic envelope device for high-pressure discharge lampNGK INSULATORS LTD·Filed 1987·Granted Feb 28, 1989·21 cites·7 claims
- 0274US4687969ADischarge tube for a high pressure metal vapor discharge lamp and a method of manufacturing the sameNGK INSULATORS LTD·Filed 1985·Granted Aug 18, 1987·18 cites·7 claims
- 0361US4665344ACeramic envelope device for high-pressure discharge lampNGK INSULATORS LTD·Filed 1985·Granted May 12, 1987·12 cites·13 claims
- 0459US4972119ACeramic envelope device for high-pressure discharge lamp, and method for producing the sameNGK INSULATORS LTD·Filed 1989·Granted Nov 20, 1990·11 cites·10 claims
- 0556US4731561ACeramic envelope device for high-pressure discharge lampNGK INSULATORS LTD·Filed 1985·Granted Mar 15, 1988·10 cites·12 claims
- 0651US4825126ACeramic envelope device for high-pressure discharge lampNGK INSULATORS LTD·Filed 1987·Granted Apr 25, 1989·8 cites·10 claims
- 0750US4742269ACeramic envelope device for high-pressure discharge lampNGK INSULATORS LTD·Filed 1985·Granted May 3, 1988·8 cites·18 claims
- 0845US4800320ADischarge tube for a high pressure metal vapor discharge lamp and a method of manufacturing the sameNGK INSULATORS LTD·Filed 1987·Granted Jan 24, 1989·5 cites·11 claims
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