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Yutaka Sakai

USPTO Granted Patents = 10

Average Co-Inventor Count = 1.6

ph-index = 4

Forward Citations = 41(Granted Patents)

Location History:

Omiya, JA (1976 - 1977)
Saitama, JP (1982)
Omiya, JP (1979 - 1984)
Ohmiya, JP (1986)

Company Filing History:

10 out of 1,279

Fuji Photo Optical Co., Ltd.

Years Active: 1976-1986

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10 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 4614409 - Finder optical system (1986-09-30),

2. 4484799 - Wide angle zoom lens (1984-11-27),

3. 4358190 - Focussing apparatus having blurring indicator (1982-11-09),

4. 4298252 - Rear stop type lens system (1981-11-03),

5. 4294521 - Rear stop type zoom lens (1981-10-13),

6. 4195912 - Zoom lens system (1980-04-01),

7. 4158482 - Inverted telephoto type super-wide angle lens (1979-06-19),

8. 4018512 - Retrofocus type lens (1977-04-19),

9. 3961845 - Zoom lens system (1976-06-08),

10. 3958865 - Retrofocus type lens system (1976-05-25),

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