Issued Patents 1989
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4867629 | Dusttight storage cabinet apparatus for use in clean rooms | Yoshiyuki Iwasawa, Tsutomu Ishida, Hiroshi Harada, Kenji Okamoto, Shintaro Kobayashi +4 more | 1989-09-19 |
| 4860662 | Linear motor truck apparatus | Shigeru Udagawa | 1989-08-29 |
| 4853633 | Magnetic head electromagnetic conversion efficiency measuring method and element therefor | — | 1989-08-01 |
| 4841055 | Desmosine derivatives and reagent for preparing artificial antigens | Takashi Okada, Sigenobu Mizusaki | 1989-06-20 |
| 4840921 | Process for the growth of III-V group compound semiconductor crystal on a Si substrate | — | 1989-06-20 |
| 4829190 | Automatic hydraulic clamping mechanism for a window foil holder of an electron beam irradiator | Kenji Okamoto | 1989-05-09 |
| 4821126 | Magnetic recording method involving core pieces of different thickness | — | 1989-04-11 |
| 4801973 | Photographic paper reserver mechanism | Kunio Takagi | 1989-01-31 |