Issued Patents 1989
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4888321 | Heat-sensitive recording materials | Hiroshi Kawakami, Ken Iwakura | 1989-12-19 |
| 4885271 | Heat-sensitive recording material | Hiroshi Kawakami | 1989-12-05 |
| 4855278 | Heat-sensitive recording material | Masato Satomura, Ken Iwakura | 1989-08-08 |
| 4855282 | Recording material and method for producing the same | Masato Satomura, Ken Iwakura, Masanobu Takashima | 1989-08-08 |
| 4847236 | Recording material | Masato Satomura, Ken Iwakura | 1989-07-11 |
| 4847593 | Transmission circuit of fire protection/security system | — | 1989-07-11 |
| 4833118 | Heat-sensitive recording material | Hiroshi Kawakami, Ken Iwakura | 1989-05-23 |
| 4833121 | Heat-sensitive recording material | Kenji Ikeda | 1989-05-23 |
| 4822771 | Heat-sensitive recording material | — | 1989-04-18 |
| 4814231 | Thermoplastic resin-silicone composite shaped article | Masayuki Onohara, Kenji Kawai, Masaru Shibata, Nobuhisa Kawaguchi | 1989-03-21 |
| 4797384 | Heat-sensitive recording sheet | Akihiro Shimomura, Shinichiro Serizawa | 1989-01-10 |
| 4797385 | Heat-sensitive recording material | — | 1989-01-10 |