Ishii; Yoshitaro
Patent Applications and Registrations
Patent applications and USPTO patent grants for Ishii; Yoshitaro.The latest application filed is for "electrophotographic image forming system".
- Ishii; Yoshitaro - Hitachi JP
- Ishii, Yoshitaro - Hitachi-shi JP
| Patent | Date |
|---|---|
| Electrophotographic image forming system Grant 6,661,994 - Ohuchi , et al. December 9, 2 | 2003-12-09 |
| Electrophotographic image forming system App 20020176726 - Ohuchi, Yoshio ; et al. | 2002-11-28 |
| Electrophotographic image forming system App 20020025201 - Ohuchi, Yoshio ; et al. | 2002-02-28 |
| Vacuum cleaner Grant 5,381,584 - Jyoraku , et al. January 17, 1 | 1995-01-17 |
| Method and apparatus for operating vacuum cleaner Grant 5,294,872 - Koharagi , et al. March 15, 1 | 1994-03-15 |
| Vacuum cleaner with fuzzy logic control Grant 5,243,732 - Koharagi , et al. September 14, 1 | 1993-09-14 |
| Method and apparatus for operating vacuum cleaner Grant RE34,286 - Toyoshima , et al. June 22, 1 | 1993-06-22 |
| Vacuum cleaner Grant 5,216,778 - Suzuki , et al. June 8, 1 | 1993-06-08 |
| Motor control apparatus for an electric vacuum cleaner Grant 5,166,585 - Koharagi , et al. November 24, 1 | 1992-11-24 |
| Vacuum cleaner and method for operating the same Grant 5,155,885 - Jyouraku , et al. October 20, 1 | 1992-10-20 |
| Electric blower having improved return passage for discharged air flow Grant 5,110,266 - Toyoshima , et al. May 5, 1 | 1992-05-05 |
| Method and apparatus for operating vacuum cleaner Grant 5,075,607 - Koharagi , et al. December 24, 1 | 1991-12-24 |
| Hose fixture device Grant 5,042,844 - Iida , et al. August 27, 1 | 1991-08-27 |
| Upright-type electric vacuum cleaner Grant 5,003,663 - Sunagawa , et al. April 2, 1 | 1991-04-02 |
| Method and apparatus for operating vacuum cleaner Grant 4,983,895 - Koharagi , et al. January 8, 1 | 1991-01-08 |
| Method and apparatus for operating vacuum cleaner Grant 4,958,406 - Toyoshima , et al. September 25, 1 | 1990-09-25 |
| Vacuum cleaner Grant 4,955,105 - Sunagawa , et al. September 11, 1 | 1990-09-11 |
| Electrical appliance Grant 4,912,593 - Iwao , et al. March 27, 1 | 1990-03-27 |
| Upright-type electric vacuum cleaner Grant 4,905,341 - Sunagawa , et al. March 6, 1 | 1990-03-06 |
| Method and apparatus for operating vacuum cleaner Grant 4,880,474 - Koharagi , et al. November 14, 1 | 1989-11-14 |
| Electric vacuum cleaner Grant D302,878 - Kimura , et al. August 15, 1 | 1989-08-15 |
| Vacuum cleaner having a blower facility structure Grant 4,809,394 - Suka , et al. March 7, 1 | 1989-03-07 |
| Upright type electric cleaner Grant 4,446,594 - Watanabe , et al. May 8, 1 | 1984-05-08 |
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