Kohji Hiratsuka

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Patents Grantslast 30 patents

Information Patent Grant
Direct-light-type planar light source apparatus and liquid crystal...
- Patent number 6,559,908
- Issue date May 6, 2003
- International Business Machines Corporation
- Kohji Hiratsuka
- G02 - OPTICS

Patents Applicationslast 30 patents

Information Patent Application
Direct-light-type planar light source apparatus and liquid crystal...
- Publication number 20020113918
- Publication date Aug 22, 2002
- International Business Machines Corporation
- Kohji Hiratsuka
- G02 - OPTICS