Issued Patents All Time
Showing 26–50 of 71 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5536878 | Method for preparing aromatic secondary amino compound | Chiyuki Kusuda, Masaru Wada, Kenichi Satou, Masae Uchida | 1996-07-16 |
| 5523467 | Process for the preparation of aliphatic polyisocyanates | Koju Okazaki, Yoshinobu Kanemura | 1996-06-04 |
| 5514793 | 1,3,6-trialkylhexahydro-1,3,6-triazocine-2-on and preparation process thereof | Hiroshi Naruse, Hideki Mizuta, Shinichi Umeda | 1996-05-07 |
| 5449829 | Process for the preparation of diphenylamine | Chiyuki Kusuda, Masaru Wada | 1995-09-12 |
| 5389708 | Sulfur-containing acid phosphoric ester internal release agent | Masahiko Kusumoto, Hiroyuki Yamashita | 1995-02-14 |
| 5382690 | Method for preparing aromatic secondary amino compound | Chiyuki Kusuda, Masaru Wada, Kenichi Satou | 1995-01-17 |
| 5374765 | Method for extracting an amino acid ester from a hydrous solution of a mineral acid salt thereof | Tomoko Kamashita, Hiroyuki Yamashita, Masanobu Ajioka | 1994-12-20 |
| 5302749 | Stabilizing method of isocyanate compounds and isocyanate compositions stabilized thereby | Hiroyuki Yamashita, Masahiko Kusumoto, Koju Okazaki | 1994-04-12 |
| 5296635 | Preparation of bis(3-nitrophenoxy) compound | Motohiro Kase, Hitoshi Nakayama, Masaru Wada, Akihiro Yamaguchi | 1994-03-22 |
| 5283365 | Process for preparing high-purity aniline | Katsuji Watanabe, Yoshitsugu Kono, Akihiro Tamaki, Takashi Kobayashi | 1994-02-01 |
| 5194559 | Optical urethane resins and plastic lenses comprising the same | Koju Okazaki, Masahiko Kusumoto, Hiroyuki Yamashita | 1993-03-16 |
| 5136086 | Preparation process of aliphatic isocyanate | Masaru Wada, Hideki Mizuta | 1992-08-04 |
| 5126388 | Highly-refractive plastic lens and process for making the lens | Koju Okazaki, Nobuyuki Kajimoto, Tohru Miura, Yoshinobu Kanemura, Katsuyoshi Sasagawa | 1992-06-30 |
| 5084545 | Resin having a large refractive index, lenses comprising the resin and process for preparing the lens | Koju Okazaki, Tohru Miura | 1992-01-28 |
| 5021503 | Resin for plastic lens having high-refractive index, lens comprising the resin, and method for preparation of the lens | Koju Okazaki, Nobuyuki Kajimoto, Tohru Miura, Yoshinobu Kanemura, Katsuyoshi Sasagawa | 1991-06-04 |
| 5013496 | Process for molding a highly-refractive plastic lens | Koju Okazaki, Nobuyuki Kajimoto, Tohru Miura, Yoshinobu Kanemura, Katsuyoshi Sasagawa | 1991-05-07 |
| 4978792 | Process for producing aminobenzylamine | Akihiro Tamaki, Katsuzi Watanabe, Akihiro Yamaguchi | 1990-12-18 |
| 4970323 | Preparation process of N-substituted monochlorosuccinimides | Mihaya Matsukawa, Masaru Wada, Hiroshi Suizu, Masayuki Furuya | 1990-11-13 |
| 4952731 | Process for producing diphenylamines or N,N'-diphenyl-phenylenediamines | Akihiro Tamaki, Nobuyuki Kajimoto, Masaru Wada | 1990-08-28 |
| 4946923 | S-alkyl thiocarbamate base resin, plastic lens comprising the resin, and process for making the lens | Koju Okazaki, Nobuyuki Kajimoto, Tohru Miura, Yoshinobu Kanemura, Katsuyoshi Sasagawa | 1990-08-07 |
| 4939306 | Preparation process of 4,4'-biphenol, precursor of same and preparation process of precursor | Tohru Miura, Koju Okazaki, Masayuki Furuya, Emiko Nishida | 1990-07-03 |
| 4929707 | Polyurethane base lens resin, plastic lens comprising the resin and preparation method of the lens | Koju Okazaki, Nobuyuki Kajimoto, Tohru Miura, Yoshinobu Kanemura, Katsuyoshi Sasagawa | 1990-05-29 |
| 4918186 | Process for producing cyclic ureas | Nobuyuki Kajimoto, Masaru Wada | 1990-04-17 |
| 4900820 | Process for producing cyclic ureas | Nobuyuki Kajimoto, Masaru Wada | 1990-02-13 |
| 4894487 | Preparation process of 4-(4-hydroxyphenyl)-cyclohexanol | Tohru Miura, Masayuki Furuya | 1990-01-16 |