Issued Patents All Time
Showing 1–18 of 18 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7192904 | Thermal recording material | Masayuki Iwasaki, Tsutomu Watanabe, Hirokazu Kitou | 2007-03-20 |
| 7160840 | Thermal recording material | Masayuki Iwasaki, Tsutomu Watanabe | 2007-01-09 |
| 7135431 | Thermosensitive recording material | Masayuki Iwasaki, Tsutomu Watanabe | 2006-11-14 |
| 7098168 | Heat-sensitive recording material | Masayuki Iwasaki, Tsutomu Watanabe | 2006-08-29 |
| 6972272 | Heat-sensitive recording material | Masayuki Iwasaki, Tsutomu Watanabe | 2005-12-06 |
| 6852671 | Heat-sensitive recording material | Masayuki Iwasaki, Tsutomu Watanabe | 2005-02-08 |
| 6818592 | Heat-sensitive recording material | Tsutomu Watanabe, Masayuki Iwasaki | 2004-11-16 |
| 6800588 | Thermal recording material | Masayuki Iwasaki, Takayuki Matsumoto, Tetsuo Takeuchi | 2004-10-05 |
| 6750174 | Heat sensitive recording material | Tsutomu Watanabe | 2004-06-15 |
| 6730632 | Heat-sensitive recording material | Tsutomu Watanabe, Masayuki Iwasaki | 2004-05-04 |
| 6720286 | Heat-sensitive recording material | Masayuki Iwasaki | 2004-04-13 |
| 6699816 | Heat-sensitive recording material | Masayuki Iwasaki, Tsutomu Watanabe | 2004-03-02 |
| 6642175 | Heat-sensitive recording material | Tsutomu Watanabe, Masayuki Iwasaki | 2003-11-04 |
| 5128310 | Thermosensitive recording material | Yoshiyuki Hoshi | 1992-07-07 |
| 4742041 | Heat-sensitive recording material | Kensuke Ikeda, Junichi Yoneda | 1988-05-03 |
| 4631204 | Process of producing color developer sheet for pressure-sensitive recording | — | 1986-12-23 |
| 4601920 | Process for the preparation of color developer sheets for pressure-sensitive recording | Keiso Saeki | 1986-07-22 |
| 4559242 | Method of preparing color developer sheets | Shojiro Watanabe, Keiso Saeki | 1985-12-17 |