Issued Patents 1989
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4883718 | Flexible copper-clad circuit substrate | Masahiro Ohta, Saburo Kawashima, Yoshiho Snobe, Shoji Tamai, Hideaki Oikawa | 1989-11-28 |
| 4865795 | Process for producing thermosetting resins | Tetsunosuke Shiomura, Yoshiho Sonobe | 1989-09-12 |
| 4847349 | Polyimide and high-temperature adhesive of polyimide from meta substituted phenoxy diamines | Masahiro Ohta, Saburo Kawashima, Yoshiho Sonobe, Shoji Tamai, Hideaki Oikawa +1 more | 1989-07-11 |
| 4839232 | Flexible laminate printed-circuit board and methods of making same | Moritsugu Morita, Kazuo Miyazaki, Masahiro Ohta, Shoji Tamai, Kunio Nishihara | 1989-06-13 |
| 4831102 | Thermosetting resin composition from poly-arylene-oxy-bis-maleimide and polyarylene diamine | Norimasa Yamaya, Nobuhito Koga, Masahiro Ohta | 1989-05-16 |
| 4808507 | Electrophotographic photoreceptor 2-Phenyl-benzooxazole bisazo based | Yasuyuki Yamada, Hisato Itoh, Tsutomu Nishizawa | 1989-02-28 |
| 4808503 | Electrophotographic receptors with charge generating azo-substituted tetraphenyl-thiophene or thiophene 1,1-dioxide | Yasuyuki Yamada, Hisato Itoh, Tsutomu Nishizawa | 1989-02-28 |
| 4803258 | Thermoplastic aromatic polyether-pyridine and process for preparing same | Keizaburo Yamaguchi, Hideaki Oikawa, Kenichi Sugimoto, Masahiro Ohta | 1989-02-07 |
| 4801732 | Preparation process of .alpha.-L-aspartyl-L-phenylalanine methyl ester | Ryuichi Mita, Takeshi Oura, Chojiro Higuchi, Toshio Katoh | 1989-01-31 |
| 4797466 | High-temperature adhesive polyimide from 2,6-bis(3-aminophenoxy)pyridine | Hideaki Oikawa, Masahiro Ohta, Saburo Kawashima, Shoji Tamai, Yoshiho Sonobe | 1989-01-10 |
| 4795798 | High-temperature adhesive polyimide from 2,2-bis[4-(3-amino phenoxy)phenyl]1,1,1,3,3,3-hexafluoro propane | Shoji Tamai, Saburo Kawashima, Masahiro Ohta, Hideaki Oikawa, Kouji Ohkoshi | 1989-01-03 |