Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5179064 | Heat-sensitive recording material | Masato Nakamura | 1993-01-12 |
| 5035954 | Heat-sensitive record material and method for producing it | Mikio Nakamura, Masato Kawamura, Yukio Takayama | 1991-07-30 |
| 4828957 | Two-color heat-sensitive recording material with 2-hydroxy-3-naphthoanilide as both coupler and color developing agent | Tosaku Okamoto, Mitsuru Kondo | 1989-05-09 |
| 4730057 | Phthalide derivatives useful as colorless chromogenic material | Nobuo Kanda, Mitsuru Kondo | 1988-03-08 |
| 4713488 | Method for producing cycloalkyl aminophenol derivatives | Masayuki Omatsu, Mitsuru Kondo | 1987-12-15 |
| 4629800 | Fluoran compounds | Masayuki Omatsu, Mitsuru Kondo | 1986-12-16 |