Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5466656 | Heat sensitive recording material | Kazumi Maki, Katsuhiko Ishida | 1995-11-14 |
| 5395814 | Heat sensitive recording material | Ritsuo Mandoh, Katsuhiko Ishida | 1995-03-07 |
| 5143890 | Heat sensitive recording material | Tetsuo Tsuchida, Yukihiro Abe, Toranosuke Saito | 1992-09-01 |
| 4906604 | Multi-color heat sensitive recording material | Tosaku Okamoto, Katsuhiko Ishida | 1990-03-06 |
| 4748148 | Recording system utilizing phthalide derivatives as colorless chromogenic material | Mitsuru Kondo, Nobuo Kanda | 1988-05-31 |
| 4641160 | Recording system utilizing phthalide derivatives as colorless chromogenic material | Mitsuru Kondo, Nobuo Kanda | 1987-02-03 |
| 4529992 | Multicolor record material | Katsuhiko Ishida, Tosaku Okamoto | 1985-07-16 |
| 4510512 | Heat-sensitive record material | Tosaku Okamoto, Katsuhiko Ishida | 1985-04-09 |
| 4403051 | Microcapsule dispersions | Shunsuke Shioi, Takio Kuroda, Shigeo Okamoto, Tomoharu Shiozaki | 1983-09-06 |
| 4336170 | Method of treatment of an aqueous dispension of microcapsules | Tetsuro Horiike, Tomoharu Shiozaki | 1982-06-22 |
| 4222891 | Method of making oil-containing microcapsules | Tomoharu Shiozaki, Makoto Miyake | 1980-09-16 |