Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5175372 | Process of producing high purity bis(4-hydroxyphenyl)sulfides and heat-sensitive recording materials containing the same | Masao Kawamura, Kunioki Kato, Tomiharu Amitani, Makoto Sato, Tsuyoshi Morishita | 1992-12-29 |
| 5102858 | Heat-sensitive recording materials containing high purity bis(4-hydroxyphenyl)sulfides | Masao Kawamura, Kunioki Kato, Tomiharu Amitani, Makoto Sato, Tsuyoshi Morishita | 1992-04-07 |
| 4849138 | Method of producing alkali metal benzenesulfinates | Masao Kawamura, Kunioki Kato, Masato Yoshikawa, Hirokazu Kagano | 1989-07-18 |
| 4740578 | Process for producing polythiobisphenols and process for producing mercaptophenols by the hydrogenolysis of the same | Masao Kawamura, Tadaaki Nishi, Kenzo Kobayashi, Masato Yoshikawa | 1988-04-26 |
| 4521801 | Semiconductor device with composite lead wire | Taketoshi Kato | 1985-06-04 |
| 4468853 | Method of manufacturing a solar cell | Hiroshi Morita, Taketoshi Kato, Hiroshi Washida | 1984-09-04 |