Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5342967 | Crystal modifications of 2-M-toluidino-3-methyl-6-di-N-butylaminofluoran, process for preparing thereof, and recording materials containing said crystal modifications | Shigeo Fujita, Mansuke Matsumoto, Yojiro Kumagae, Sayuri Wada | 1994-08-30 |
| 5311379 | Method and system for positioning head on target cylinder of disk | Tohru Shinohara | 1994-05-10 |