Issued Patents All Time
Showing 26–29 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4760007 | Process of developing latent electrostatic image using dry magnetic developer | Yoshio Takasu, Tetsuo Hasegawa, Shigeo Kato | 1988-07-26 |
| 4517273 | Pressure fixable capsule toner | Sukejiro Inoue, Tetsuo Hasegawa | 1985-05-14 |
| 4302201 | Method for developing electrical latent images | Tetsuo Hasegawa, Katsumi Nagamatsu | 1981-11-24 |
| 4259426 | Pressure fixable microcapsule toner and electrostatic image developing method | Tetsuo Hasegawa, Shigeo Kato | 1981-03-31 |