Inventor · disambiguated record
Masachika Ooyama
Also filed as: OOYAMA MASACHIKA
4 granted patents·47 citations·filing 1996–1999
76Inventor score
Technology areasH01J
Files withUSHIO ELECTRIC INC4
Top patents by PatentIndex Score
4 records- 0162US5957570AReflector discharge lampUSHIO ELECTRIC INC·Filed 1998·Granted Sep 28, 1999·17 cites·6 claims
- 0260US6274983B1High pressure mercury lamp with particular electrode structure and emission device for a high-pressure mercury lampUSHIO ELECTRIC INC·Filed 1999·Granted Aug 14, 2001·15 cites·27 claims
- 0346US5773932AMetal halide lamp with reduced color shadowingUSHIO ELECTRIC INC·Filed 1996·Granted Jun 30, 1998·7 cites·4 claims
- 0444US5973454AShort arc type metal halide lamp with encapsulated rare earth metal halides to increase color reproducibilityUSHIO ELECTRIC INC·Filed 1997·Granted Oct 26, 1999·8 cites·5 claims
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