Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4883702 | Polyphenylene sulfide resin composition useful for plating | Kensuke Ogawara, Noriaki Emura | 1989-11-28 |
| 4855975 | Over write capable magnetooptical recording method using two beams, and magnetooptical recording apparatus therefor | Hideki Akasaka | 1989-08-08 |
| 4853912 | Process and apparatus for simultaneous erasure and recording in magneto-optical recording | Hideki Akasaka | 1989-08-01 |
| 4839495 | Laser beam welding apparatus for an inner circumferential surface of a tube | Takuya Kitera, Shoichi Urushibata, Tadashi Nagashima, Shoichi Hamada, Isao Shirasu +6 more | 1989-06-13 |