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Hachioji, Japan

Yasunori Kanazawa

USPTO Granted Patents = 14

Average Co-Inventor Count = 3.0

ph-index = 9

Forward Citations = 254(Granted Patents)

Location History:

Hachioji, JA (1976)
Ibaraki, JP (1984)
Hachiouji, JP (1987 - 1988)
Hachioji, JP (1980 - 1991)

Company Filing History:

11 out of 42,508

Hitachi Maxell, Limited

Hitachi Maxwell, Ltd.

where one patent can have more than one assignee

Years Active: 1976-1991

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14 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 5007039 - Optical information recording/reproducing apparatus (1991-04-09),

2. 4959744 - Shutter assembled disc cartridge (1990-09-25),

3. 4811151 - Shutter assembled disc cartridge (1989-03-07),

4. 4799123 - Disc cartridge (1989-01-17),

5. 4740948 - Disc cartridge (1988-04-26),

6. 4733388 - Information recording disc (1988-03-22),

7. 4703408 - Apparatus and record carrier for optically writing information (1987-10-27),

8. 4678338 - Color sensor (1987-07-07),

9. 4539615 - Azimuthal magnetic recording and reproducing apparatus (1985-09-03),

10. 4472686 - Circuit for reproducing and demodulating modulated digital signals (1984-09-18),

11. 4363039 - Automatic operation control apparatus for a PCM recording and (1982-12-07),

12. 4282551 - PCM Recording and reproducing apparatus (1981-08-04),

13. 4227221 - PCM Recording apparatus (1980-10-07),

14. 3979721 - Pulse code modulation recording and reproducing apparatus (1976-09-07),

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