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Hideyasu Yamanaka

This inventor holds 6 USPTO granted patents. Top assignee: Ricoh Company, Ltd.. Active years: 1982-2003.

USPTO Granted Patents = 6

% Patents Active = 100.0

Average Co-Inventor Count = 2.8

ph-index = 4

Forward Citations = 45(Granted Patents)

Location History:

Tokyo, JP (1982)
Ayase, JP (1998 - 2003)

Company Filing History:

6 out of 28,915

Ricoh Company, Ltd.

Years Active: 1982-2003

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6 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 6502960 - Light source device for an image forming apparatus (2003-01-07),

2. 6299331 - Light source device for an image forming apparatus (2001-10-09),

3. 6179445 - Light source device for an image forming apparatus (2001-01-30),

4. 5997153 - Light source device for an image forming apparatus (1999-12-07),

5. 5758950 - Light source device for an image forming apparatus (1998-06-02),

6. 4339702 - Stepping motor drive apparatus (1982-07-13),

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