Issued Patents All Time
Showing 26–40 of 40 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6872333 | Enic compounds, sulfur-containing polyenic compound, sulfur-containing polythiol compound, high refractive index photocurable composition and cured product thereof | Kenji Ishii, Hitoshi Okazaki, Mitsuteru Kondo, Masaaki Takasuka | 2005-03-29 |
| 6534589 | Process for producing a resin having a large refractive index | Yuichi Yoshimura, Atsuki Niimi, Hiroshi Horikoshi, Masaaki Takasuka | 2003-03-18 |
| 6531532 | Composition for optical materials | Yuichi Yoshimura, Atsuki Niimi, Hiroshi Horikoshi | 2003-03-11 |
| 6528005 | Process for producing a lens by polymerizing bis(&bgr;-epithiopropyl) ether | Akikazu Amagai, Atsuki Niimi | 2003-03-04 |
| 6472495 | Composition for producing resin | Yuichi Yoshimura, Atsuki Niimi, Hiroshi Horikoshi | 2002-10-29 |
| 6444146 | Process for production of optical material | Yuichi Yoshimura | 2002-09-03 |
| 6365223 | Process for tinting a resin for optical materials | Yuichi Yoshimura, Atsuki Niimi, Hiroshi Horikoshi, Masaaki Takasuka | 2002-04-02 |
| 6225439 | Compositions for a resin | Akikazu Amagai, Masanori Shimuta, Katsuyuki Mizuno | 2001-05-01 |
| 6201061 | Process for producing a novel resin for optical materials having excellent color tone and transparency | Akikazu Amagai, Katsuyuki Mizuno | 2001-03-13 |
| 6197226 | Process for tinting a resin having a large refractivity index and optical material tinted by the process | Akikazu Amagai, Katsuyuki Mizuno, Atsuki Niimi, Hiroshi Horikoshi | 2001-03-06 |
| 6180753 | Process for treating a compound having epithio structures for disposal | Akikazu Amagai | 2001-01-30 |
| 6130307 | Composition for a resin | Akikazu Amagai, Katsuyuki Mizuno | 2000-10-10 |
| 6117923 | Resin for optical material | Akikazu Amagai, Masanori Shimuta, Katsuyuki Mizuno | 2000-09-12 |
| 5945504 | Episulfide compound | Akikazu Amagi, Nobuyuki Uemura, Kenichi Takahashi, Minoru Ohashi, Hiroshi Horikoshi +1 more | 1999-08-31 |
| 5807975 | Alkyl sulfide type episulfide compound | Akikazu Amagai, Kenichi Takahashi | 1998-09-15 |