Issued Patents All Time
Showing 26–49 of 49 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5256906 | Mechanism for switching from independent to synchronous, or vice versa the operational setting of a dust collector with a receptacle for supplying another power tool with which the dust collector is to be operated synchronously | Yukimi Amano | 1993-10-26 |
| 5127964 | Flexible photovoltaic device | Yoshihiro Hamakawa, Yoshihisa Tawada, Masanobu Izumina | 1992-07-07 |
| 5124269 | Method of producing a semiconductor device using a wire mask having a specified diameter | Kenji Kobayashi, Yoshihisa Tawada | 1992-06-23 |
| D325453 | Vacuum cleaner | — | 1992-04-14 |
| 5091764 | Semiconductor device having a transparent electrode and amorphous semiconductor layers | Keizo Asaoka, Yoshihisa Tawada | 1992-02-25 |
| 5032884 | Semiconductor pin device with interlayer or dopant gradient | Hideo Yamagishi, Masataka Kondo, Kunio Nishimura, Akihiko Hiroe, Keizou Asaoka +2 more | 1991-07-16 |
| 4965225 | Method of stabilizing amorphous semiconductors | Hideo Yamagishi, William Nevin, Hitoshi Nishio, Keiko Miki, Yoshihisa Tawada | 1990-10-23 |
| 4956023 | Integrated solar cell device | Toshihito Endo, Kenji Kobayashi, Yoshihisa Tawada | 1990-09-11 |
| 4941032 | Semiconductor device | Kenji Kobayashi, Masataka Kondo, Yoshihisa Tawada | 1990-07-10 |
| 4926230 | Multiple junction solar power generation cells | Hideo Yamagishi, Minori Yamaguchi, Keizo Asaoka, Akihiko Hiroe, Masataka Kondo +1 more | 1990-05-15 |
| 4875943 | Flexible photovoltaic device | Yoshihiro Hamakawa, Yoshihisa Tawada, Masanobu Izumina | 1989-10-24 |
| 4869976 | Process for preparing semiconductor layer | Yoshihisa Tawada, Takeo Okamoto | 1989-09-26 |
| 4862227 | Semiconductor device and its manufacturing method | Shinji Kuwamura, Yoshihisa Tawada | 1989-08-29 |
| 4825806 | Film forming apparatus | Yoshihisa Tawada | 1989-05-02 |
| 4805504 | Safety cover for miter saw | Fusao Fushiya, Nobuhiro Inoue | 1989-02-21 |
| 4773942 | Flexible photovoltaic device | Yoshihiro Hamakawa, Yoshihisa Tawada, Masanobu Izumina | 1988-09-27 |
| 4701344 | Film forming process | Yoshihisa Tawada | 1987-10-20 |
| 4670762 | Amorphous silicon semiconductor and process for same | Yoshihisa Tawada, Yoshihiro Hamakawa | 1987-06-02 |
| 4631351 | Integrated solar cell | Yoshihisa Tawada | 1986-12-23 |
| 4612409 | Flexible photovoltaic device | Yoshihiro Hamakawa, Yoshihisa Tawada, Masanobu Izumina | 1986-09-16 |
| 4585537 | Process for producing continuous insulated metallic substrate | Takehisa Nakayama, Kunio Nishimura, Yoshihisa Tawada | 1986-04-29 |
| 4544423 | Amorphous silicon semiconductor and process for same | Yoshihisa Tawada, Yoshihiro Hamakawa | 1985-10-01 |
| 4476346 | Photovoltaic device | Yoshihisa Tawada | 1984-10-09 |
| 4366093 | Cylindrical molded catalyst | Ken Shiozaki, Akira Ohnishi | 1982-12-28 |