Issued Patents 1989
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4888334 | Pressure-sensitive microcapsule sheet | Kunihiko Ohga | 1989-12-19 |
| 4876233 | Recording material | Shojiro Sano, Katsumi Matsuoka, Masanobu Takashima, Ken Iwakura | 1989-10-24 |
| 4870048 | Color developer sheet | Katsumi Matsuoka, Shojiro Sano, Masanobu Takashima, Ken Iwakura | 1989-09-26 |
| 4861748 | Recording material | Masanobu Takashima, Ken Iwakura | 1989-08-29 |
| 4849397 | Pressure-sensitive recording medium | Shojiro Sano | 1989-07-18 |
| 4840927 | Desensitizer composition | Shojiro Sano | 1989-06-20 |
| 4822768 | Pressure sensitive recording sheet | Kunihiko Ohga | 1989-04-18 |
| 4820684 | Pressure-sensitive recording sheet | Shojiro Sano | 1989-04-11 |
| 4803192 | Recording material | Masanobu Takashima, Ken Iwakura | 1989-02-07 |
| 4800193 | Recording material | Masanobu Takashima, Ken Iwakura, Takekatsu Sugiyama, Masato Satomura | 1989-01-24 |