Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11945769 | N,N′-diarylurea derivative, manufacturing method thereof, and thermosensitive recording material using same | Yoshimi Ishibashi | 2024-04-02 |
| 10086634 | Heat-sensitive recording material | Yoshimi Ishibashi, Yoshito Nakagawa | 2018-10-02 |
| 5661100 | Urea (thiourea) derivative and thermal recording sheet using the same | Toshiaki Minami, Tomoaki Nagai, Kaoru Hamada, Akio Sekine, Ryuzo Minakami | 1997-08-26 |
| 5284978 | Method for producing diphenyl sulfone compounds | Yoshihiro Ozaki | 1994-02-08 |
| 4950810 | Selective process for preparting 2,4- or 3,6-di-substituted phenol compounds | Shuichi Wakamatsu, Tetsuji Ike | 1990-08-21 |
| 4605940 | Thermoresponsive recording paper sheet | Eisaburo Kaku, Naoki Hanayama | 1986-08-12 |
| 4558335 | Thermoresponsive recording sheet | Naoki Hanayama, Eisaburo Kaku | 1985-12-10 |
| 4404352 | Method of producing polyurethanes | Koreyoshi Suenobu, Masanori Kohara, Yasuhiro Hidaka, Kazuki Katsuyama | 1983-09-13 |
| 4322519 | Method of producing polyurethanes | Koreyoshi Suenobu, Masanori Kohara, Kazuki Katsuyama | 1982-03-30 |