Issued Patents All Time
Showing 26–42 of 42 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5837797 | Process for preparing a sulfur-containing urethane-based plastic lens and the lens prepared thereby | Yoshinobu Kanemura, Teruyuki Nagata | 1998-11-17 |
| 5753730 | Plastic lenses having a high-refractive index, process for the preparation thereof and casting polymerization process for preparing sulfur-containing urethane resin lens and lens prepared thereby | Teruyuki Nagata, Tohru Miura, Nobuyuki Kajimoto, Yoshinobu Kanemura, Katsuyoshi Sasagawa +1 more | 1998-05-19 |
| 5693738 | Composition for urethane-base plastic lens, urethane-base plastic lens obtained from the composition, and process for the production of the plastic lens | Chitoshi Shimakawa, Mamoru Tanaka, Yoshinobu Kanemura, Teruyuki Nagata, Seiichi Kobayashi +3 more | 1997-12-02 |
| 5608115 | Polythiol useful for preparing sulfur-containing urethane-based resin and process for producing the same | Yoshinobu Kanemura, Teruyuki Nagata | 1997-03-04 |
| 5594088 | Plastic lenses having a high-refractive index, process for the preparation thereof and casting polymerization process for preparing sulfur containing urethane resin lens and lens prepared thereby | Teruyuki Nagata, Tohru Miura, Nobuyuki Kajimoto, Yoshinobu Kanemura, Katsuyoshi Sasagawa +1 more | 1997-01-14 |
| 5523467 | Process for the preparation of aliphatic polyisocyanates | Yoshinobu Kanemura, Teruyuki Nagata | 1996-06-04 |
| 5302749 | Stabilizing method of isocyanate compounds and isocyanate compositions stabilized thereby | Teruyuki Nagata, Hiroyuki Yamashita, Masahiko Kusumoto | 1994-04-12 |
| 5194559 | Optical urethane resins and plastic lenses comprising the same | Masahiko Kusumoto, Hiroyuki Yamashita, Teruyuki Nagata | 1993-03-16 |
| 5126388 | Highly-refractive plastic lens and process for making the lens | Teruyuki Nagata, 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 | Teruyuki Nagata, 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 | Teruyuki Nagata, Nobuyuki Kajimoto, Tohru Miura, Yoshinobu Kanemura, Katsuyoshi Sasagawa | 1991-06-04 |
| 5013496 | Process for molding a highly-refractive plastic lens | Teruyuki Nagata, Nobuyuki Kajimoto, Tohru Miura, Yoshinobu Kanemura, Katsuyoshi Sasagawa | 1991-05-07 |
| 4946923 | S-alkyl thiocarbamate base resin, plastic lens comprising the resin, and process for making the lens | Teruyuki Nagata, 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, Teruyuki Nagata, Masayuki Furuya, Emiko Nishida | 1990-07-03 |
| 4929707 | Polyurethane base lens resin, plastic lens comprising the resin and preparation method of the lens | Teruyuki Nagata, Nobuyuki Kajimoto, Tohru Miura, Yoshinobu Kanemura, Katsuyoshi Sasagawa | 1990-05-29 |
| 4877907 | Preparation process of 4,4'-biphenol, precursor of same and preparation process of precursor | Tohru Miura, Teruyuki Nagata, Masayuki Furuya, Emiko Nishida | 1989-10-31 |
| 4873374 | Preparation process of 4,4'-biphenol, precursor of same and preparation process of precursor | Tohru Miura, Teruyuki Nagata, Masayuki Furuya, Emiko Nishida | 1989-10-10 |