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Tadao Hasegawa

USPTO Granted Patents = 13

Average Co-Inventor Count = 2.5

ph-index = 5

Forward Citations = 85(Granted Patents)

Location History:

Teromachi, JP (1980)
Toyota, JP (1985 - 2007)

Company Filing History:

12 out of 36,771

Toyota Jidosha Kabushiki Kaisha

Toyota Jidosha Kogyo Kabushiki Kaisha

Denson Corporation

where one patent can have more than one assignee

Years Active: 1980-2007

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13 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 7204215 - Valve characteristic controller and control method for internal combustion engine (2007-04-17),

2. 6135077 - Valve timing changing apparatus for internal combustion engine (2000-10-24),

3. 6131541 - Variable valve performance mechanism in internal combustion engine (2000-10-17),

4. 6067947 - Valve driving apparatus for engine (2000-05-30),

5. 6014952 - Valve timing control apparatus for an internal combustion engine (2000-01-18),

6. 5988128 - Valve driving apparatus for engine (1999-11-23),

7. 5988127 - Valve lifter structure (1999-11-23),

8. 5924397 - Variable valve performance apparatus for engine (1999-07-20),

9. 5893345 - Valve control apparatus for an internal combustion engine (1999-04-13),

10. 5870984 - Variable engine valve driver (1999-02-16),

11. 5816204 - Variable valve timing mechanism for internal combustion engine (1998-10-06),

12. 4545334 - Lubricating oil cooling system for rear or mid engined vehicle (1985-10-08),

13. 4192520 - Seal structure (1980-03-11),

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