Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5381584 | Vacuum cleaner | Fumio Jyoraku, Hisao Suka, Yoshitaro Ishii, Mitsuhisa Kawamata, Haruo Koharagi +6 more | 1995-01-17 |
| 5294872 | Method and apparatus for operating vacuum cleaner | Haruo Koharagi, Kazuo Tahara, Tsunehiro Endo, Kunio Miyashita, Yoshitaro Ishii +5 more | 1994-03-15 |
| 5243732 | Vacuum cleaner with fuzzy logic control | Haruo Koharagi, Kazuo Tahara, Toshiyuki Ajima, Tsunehiro Endo, Hisao Suka +8 more | 1993-09-14 |
| RE34286 | Method and apparatus for operating vacuum cleaner | Fumio Jyoraku, Yoshitaro Ishii, Kazuo Tahara, Haruo Koharagi, Syuji Watanabe +4 more | 1993-06-22 |
| 5166585 | Motor control apparatus for an electric vacuum cleaner | Haruo Koharagi, Kazuo Tahara, Tsunehiro Endo, Kunio Miyashita, Yoshitaro Ishii +5 more | 1992-11-24 |
| 5110266 | Electric blower having improved return passage for discharged air flow | Fumio Jyoraku, Yoshitaro Ishii, Yukiji Iwase, Shigenori Sato | 1992-05-05 |
| 5075607 | Method and apparatus for operating vacuum cleaner | Haruo Koharagi, Kazuo Tahara, Tsunehiro Endo, Kunio Miyashita, Yoshitaro Ishii +5 more | 1991-12-24 |
| 5027469 | Vacuum cleaner | Fumio Jyoraku, Mitsuhisa Kawamata, Yoshitaro Ishii, Jiro Arai | 1991-07-02 |
| 4983895 | Method and apparatus for operating vacuum cleaner | Haruo Koharagi, Kazuo Tahara, Tsunehiro Endo, Kunio Miyashita, Yoshitaro Ishii +5 more | 1991-01-08 |
| 4958406 | Method and apparatus for operating vacuum cleaner | Fumio Jyoraku, Yoshitaro Ishii, Kazuo Tahara, Haruo Koharagi, Syuji Watanabe +4 more | 1990-09-25 |
| 4880474 | Method and apparatus for operating vacuum cleaner | Haruo Koharagi, Kazuo Tahara, Tsunehiro Endo, Kunio Miyashita, Yoshitaro Ishii +5 more | 1989-11-14 |