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Shinji Ohyama

USPTO Granted Patents = 4

Average Co-Inventor Count = 6.2

ph-index = 4

Forward Citations = 165(Granted Patents)

Location History:

Hitachi, JP (1990)
Ibaraki, JP (1992)

Company Filing History:

4 out of 42,508

Years Active: 1990-1992

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4 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 5101096 - Optical recording sheet and method and apparatus for reproducing the same (1992-03-31),

2. 4978187 - Optical element, optical disc and rotary encoder with the optical element (1990-12-18),

3. 4945348 - Liquid crystal display combined with signal input tablet (1990-07-31),

4. 4937808 - Intergrated optical head with flexible substrate portion (1990-06-26),

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