Inventor · disambiguated record
Ryoji Katsuma
Also filed as: KATSUMA RYOJI
11 granted patents·71 citations·filing 2004–2012
88Inventor score
Top patents by PatentIndex Score
11 records- 0192US7188973B2Optical image projector and light source device for optical image projectorSEIKO EPSON CORP·Filed 2005·Granted Mar 13, 2007·23 cites·18 claims
- 0288US7911694B1ScreenSEIKO EPSON CORP·Filed 2010·Granted Mar 22, 2011·8 cites·8 claims
- 0385US8197926B2ScreenSHINBO AKIRA·Filed 2009·Granted Jun 12, 2012·9 cites·18 claims
- 0481US8169697B2Screen unitKATSUMA RYOJI·Filed 2011·Granted May 1, 2012·5 cites·9 claims
- 0578US8023186B2ScreenSEIKO EPSON CORP·Filed 2009·Granted Sep 20, 2011·5 cites·16 claims
- 0677US8169700B2Reflective screenKATSUMA RYOJI·Filed 2011·Granted May 1, 2012·4 cites·5 claims
- 0777US7052147B2Light source, and projector provided with the light sourceSEIKO EPSON CORP·Filed 2004·Granted May 30, 2006·16 cites·33 claims
- 0862US8405905B2ScreenSHINBO AKIRA·Filed 2012·Granted Mar 26, 2013·1 cites·9 claims
- 0956US7948679B2Screen and projectorSEIKO EPSON CORP·Filed 2009·Granted May 24, 2011·0 cites·12 claims
- 1051US8228603B2Screen and projectorSHINBO AKIRA·Filed 2011·Granted Jul 24, 2012·0 cites·12 claims
- 1148US8477421B2ScreenKATSUMA RYOJI·Filed 2012·Granted Jul 2, 2013·0 cites·10 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →