Kei Yamaoka

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Sealed lamp device and projector
- Patent number 7,866,824
- Issue date Jan 11, 2011
- Sony Corporation
- Kei Yamaoka
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Lamp cooling device and projection display apparatus
- Patent number 7,425,793
- Issue date Sep 16, 2008
- Sony Corporation
- Motohisa Haga
- F21 - LIGHTING

Patents Applicationslast 30 patents

Information Patent Application
Sealed lamp device and projector
- Publication number 20080106701
- Publication date May 8, 2008
- SONY CORPORATION
- Kei Yamaoka
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Lamp cooling device and projection display apparatus
- Publication number 20060232973
- Publication date Oct 19, 2006
- Motohisa Haga
- F21 - LIGHTING