Issued Patents All Time
Showing 226–250 of 254 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4734482 | Polyimide from ether diamine having the indane structure and high-temperature adhesive of polyimide | Shoji Tamai, Saburo Kawashima, Yoshiho Sonobe, Masahiro Ohta, Hideaki Oikawa | 1988-03-29 |
| 4724268 | Purification process of 3,3'-dinitrodiphenyl compounds | Keizaburo Yamaguchi, Kenichi Sugimoto, Yoshimitsu Tanabe, Teruyuki Nagata | 1988-02-09 |
| 4701567 | Process for producing 6,6'-dihydroxy-3,3,3',3'-tetramethyl-1,1'-spirobiindane | Yoshimitsu Tanabe, Keizaburo Yamaguchi, Yukihiro Yoshikawa, Kenichi Sugimoto | 1987-10-20 |
| 4692554 | Process for producing 1,3-bis(3-aminophenoxy)benzene | Keizaburo Yamaguchi, Yukihiro Yoshikawa, Yoshimitsu Tanabe, Kenichi Sugimoto | 1987-09-08 |
| 4687836 | Polyimide adhesives, coats and prepreg | Akira Ibi, Takushi Sato, Shigeru Takahashi, Shigeyuki Shishido, Shoji Tamai +1 more | 1987-08-18 |
| 4675439 | Preparation process of N-acylphenylalanines | Ryuichi Mita, Toshio Katoh, Chojiro Higuchi | 1987-06-23 |
| 4671890 | Aminobenzylamine composition | Keizaburo Yamaguchi, Kenichi Sugimoto, Yoshimitsu Tanabe, Midori Yamazaki | 1987-06-09 |
| 4618714 | Process for preparation of 3,3'- or 3,4'-diaminobenzophenones | Keizaburo Yamaguchi, Kenichi Sugimoto, Yoshimitsu Tanabe, Saburo Kawashima | 1986-10-21 |
| 4612388 | Process for producing N-acylphenylalanines | Ryuichi Mita, Toshio Katoh, Chojiro Higuchi | 1986-09-16 |
| 4605759 | Process for production of .beta.-phenylserine | Ryuichi Mita, Toshio Katoh, Chojiro Higuchi | 1986-08-12 |
| 4556738 | Process for preparation of 3,3'- or 3,4'-diamino benzophenone | Saburo Kawashima | 1985-12-03 |
| 4540818 | Process for preparation of 3,3'- or 3,4'-diaminodiphenylmethane | Keizaburo Yamaguchi, Kenichi Sugimoto, Yoshimitsu Tanabe, Saburo Kawashima | 1985-09-10 |
| 4484003 | Preparation process of .beta.-chloroalanine | Masaharu Ohoka, Toshio Katoh, Ryuichi Mita, Nobuyuki Kawashima, Chojiro Higuchi +3 more | 1984-11-20 |
| 4453009 | Process for producing fluorobenzophenone derivatives | Keizaburo Yamaguchi, Kenichi Sugimoto, Yoshimitsu Tanabe | 1984-06-05 |
| 4453008 | Production process of DL-cystein | Ryuichi Mita, Masaharu Ohoka, Chojiro Higuchi, Toshio Katoh, Nobuyuki Kawashima +2 more | 1984-06-05 |
| 4430841 | Method of filling a crack in concrete | Masatoshi Ohkura | 1984-02-14 |
| 4407892 | Heat sensitive recording sheet | Keizaburo Yamaguchi, Hisamichi Murakami | 1983-10-04 |
| 4393000 | Cyclization process for producing aziridine-2-carboxylic acid or its salts | Ryuichi Mita, Chojiro Higuchi, Toshio Kato, Nobuyuki Kawashima, Shosuke Nagai +1 more | 1983-07-12 |
| 4380671 | Process for the preparation of 2,2'-bis(4-substituted phenol)sulfides | Tadashi Kobayashi, Keizaburo Yamaguchi, Hisamichi Murakami | 1983-04-19 |
| 4350643 | Process for producing 2,3-dihalopropionitrile | Shosuke Nagai, Toshio Kato, Chojiro H. Iguchi, Nobuyuki Kawashima, Ryuichi Mita +1 more | 1982-09-21 |
| 4338259 | Alpha-halogeno-beta-aminopropionitriles or the mineral acid salts thereof, and processes for production thereof | Ryuichi Mita, Toshio Kato, Chojiro Higuchi, Hisamichi Murakami | 1982-07-06 |
| 4312522 | Heat sensitive recording sheet | Keizaburo Yamaguchi, Hisamichi Murakami | 1982-01-26 |
| 4304933 | Production of DL-serine | Ryuichi Mita, Chojiro Higuchi, Toshio Kato, Nobuyuki Kawashima, Shosuke Nagai +1 more | 1981-12-08 |
| 4287366 | Process for preparing bisphenol sulfone derivatives | Keizaburo Yamaguchi, Hisamichi Murakami, Tadashi Kobayashi | 1981-09-01 |
| 4275240 | Process for the preparation of 2,2'-bisphenol sulfoxides | Keizaburo Yamaguchi, Hisamichi Murakami, Tadashi Kobayashi | 1981-06-23 |