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Shigekazu Hasegawa

USPTO Granted Patents = 12

Average Co-Inventor Count = 3.1

ph-index = 10

Forward Citations = 193(Granted Patents)

Location History:

Sakai, JP (1981 - 1995)
Osaka, JP (1992 - 1995)

Company Filing History:

12 out of 2,667

Kubota Corporation

Years Active: 1981-1995

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12 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 5429005 - Transmission system for transmitting engine drive in varied speeds to (1995-07-04),

2. 5407042 - Propelling transmission structure for a working vehicle (1995-04-18),

3. 5341893 - Four wheel drive working vehicle having transmission clutches separately (1994-08-30),

4. 5109964 - Conical roller type clutch apparatus (1992-05-05),

5. 4974403 - Grass cutting system having a grass catcher (1990-12-04),

6. 4907465 - Change speed control structure for hydraulic transmission (1990-03-13),

7. 4775940 - Plowing depth detecting system for rotary plow (1988-10-04),

8. 4719812 - Transmission casing including a hydraulic clutch (1988-01-19),

9. 4711329 - Hydraulic circuit construction for power shift transmission (1987-12-08),

10. 4637269 - Drive apparatus (1987-01-20),

11. 4535847 - Tractor with three-point linkage connecting scraper thereto and (1985-08-20),

12. 4300638 - Automatic position control apparatus for ground working vehicle (1981-11-17),

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