Issued Patents 1989
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4888321 | Heat-sensitive recording materials | Hiroshi Kawakami, Akira Igarashi | 1989-12-19 |
| 4882311 | Heat-sensitive recording material | Kenji Ikeda, Masanobu Takashima | 1989-11-21 |
| 4876233 | Recording material | Keiso Saeki, Shojiro Sano, Katsumi Matsuoka, Masanobu Takashima | 1989-10-24 |
| 4871713 | Heat-sensitive recording material | Katsumi Matsuoka, Kensuke Ikeda | 1989-10-03 |
| 4870048 | Color developer sheet | Katsumi Matsuoka, Shojiro Sano, Keiso Saeki, Masanobu Takashima | 1989-09-26 |
| 4861748 | Recording material | Keiso Saeki, Masanobu Takashima | 1989-08-29 |
| 4855278 | Heat-sensitive recording material | Akira Igarashi, Masato Satomura | 1989-08-08 |
| 4855282 | Recording material and method for producing the same | Masato Satomura, Masanobu Takashima, Akira Igarashi | 1989-08-08 |
| 4847236 | Recording material | Masato Satomura, Akira Igarashi | 1989-07-11 |
| 4839332 | Heat-sensitive recording material | Kensuke Ikeda, Naoto Yanagihara | 1989-06-13 |
| 4835133 | Recording material | Naoto Yanagihara, Kensuke Ikeda, Masato Satomura, Yuichi Wakata | 1989-05-30 |
| 4833118 | Heat-sensitive recording material | Hiroshi Kawakami, Akira Igarashi | 1989-05-23 |
| 4812440 | Recording material containing leuco dye | Toru Harada | 1989-03-14 |
| 4808566 | Recording material | Masanobu Takashima, Masato Satomura, Katsumi Matsuoka | 1989-02-28 |
| 4803192 | Recording material | Keiso Saeki, Masanobu Takashima | 1989-02-07 |
| 4800193 | Recording material | Keiso Saeki, Masanobu Takashima, Takekatsu Sugiyama, Masato Satomura | 1989-01-24 |