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Masakazu Yamagata

USPTO Granted Patents = 7

Average Co-Inventor Count = 1.4

ph-index = 5

Forward Citations = 61(Granted Patents)

Location History:

Tsurugashima, JP (1981)
Tokyo, JP (1987 - 2000)

Company Filing History:

Asahi Kogaku Kogyo Kabushiki Kaisha

Casio Computer Co., Ltd.

Sanki Engineering Co., Ltd.

Kubota Air Conditioner Ltd.

5. 1 out of 2,697

Kubota Corporation

where one patent can have more than one assignee

Years Active: 1981-2000

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7 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 6059866 - Air washer (2000-05-09),

2. 5600488 - Projection lens assembly and projector (1997-02-04),

3. 4979808 - Endoscope objective lens system (1990-12-25),

4. 4874220 - Viewing optical system for use with endoscope (1989-10-17),

5. 4770516 - Telephoto lens system capable of closeup shooting (1988-09-13),

6. 4653876 - Close-up lens system (1987-03-31),

7. 4289385 - Photographic lens with rear stop diaphragm (1981-09-15),

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