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Masao Sunagawa

USPTO Granted Patents = 15

Average Co-Inventor Count = 3.8

ph-index = 10

Forward Citations = 289(Granted Patents)

Location History:

Hitachi, JP (1984 - 1993)
Mito, JP (1992 - 2001)

Company Filing History:

15 out of 42,485

Years Active: 1984-2001

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15 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 6282749 - Vacuum cleaner and suction nozzle body thereof cross reference to related application (2001-09-04),

2. 6212732 - Vacuum cleaner and suction nozzle body therefor (2001-04-10),

3. 5365633 - Vacuum cleaner (1994-11-22),

4. 5216778 - Vacuum cleaner (1993-06-08),

5. 5159738 - Vacuum cleaner having silencer mechanism (1992-11-03),

6. 5131114 - Vacuum cleaner (1992-07-21),

7. 5003663 - Upright-type electric vacuum cleaner (1991-04-02),

8. D312901 - Electric vacuum cleaner (1990-12-11),

9. 4955105 - Vacuum cleaner (1990-09-11),

10. 4905341 - Upright-type electric vacuum cleaner (1990-03-06),

11. 4893376 - Upright-type electric vacuum cleaner (1990-01-16),

12. D302878 - Electric vacuum cleaner (1989-08-15),

13. 4809394 - Vacuum cleaner having a blower facility structure (1989-03-07),

14. D293728 - Vacuum cleaner (1988-01-12),

15. 4446594 - Upright type electric cleaner (1984-05-08),

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