| Patent | Date |
|---|
Polythiol compound
Grant 6,770,734 - Tanaka , et al. August 3, 2 | 2004-08-03 |
Process for preparing a thiol compound
Grant 6,770,735 - Tanaka , et al. August 3, 2 | 2004-08-03 |
Selenium-containing transparent optical material
Grant 6,664,364 - Okazaki , et al. December 16, 2 | 2003-12-16 |
Process for preparing a thiol compound
App 20030199668 - Tanaka, Mamoru ; et al. | 2003-10-23 |
Selenium-containing transparent optical material
App 20030166830 - Okazaki, Koju ; et al. | 2003-09-04 |
Polythiol compound
App 20030149230 - Tanaka, Mamoru ; et al. | 2003-08-07 |
Polythiol, polymerizable composition, resin and lens, and process for preparing thiol compound
Grant 6,596,841 - Tanaka , et al. July 22, 2 | 2003-07-22 |
Selenium-containing transparent optical material
App 20020120097 - Okazaki, Koju ; et al. | 2002-08-29 |
Polymerizable composition and process for producing optical resin comprising the same
Grant 6,365,707 - Ryu , et al. April 2, 2 | 2002-04-02 |
Polythiol, polymerizable composition, resin and lens, and process for preparing thiol compound
App 20020022713 - Tanaka, Mamoru ; et al. | 2002-02-21 |
Polymerizable composition
App 20020019511 - Morijiri, Hiroyuki ; et al. | 2002-02-14 |
Polymerizable composition
Grant 6,300,464 - Morijiri , et al. October 9, 2 | 2001-10-09 |
Polymerizable composition
App 20010002413 - Morijiri, Hiroyuki ; et al. | 2001-05-31 |
Sulfur-containing urethane-based resin and composition and process for producing the resin
Grant 6,100,362 - Okazaki , et al. August 8, 2 | 2000-08-08 |
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
Grant 5,753,730 - Nagata , et al. May 19, 1 | 1998-05-19 |
Composition for urethane-base plastic lens, urethane-base plastic lens obtained from the composition, and process for the production of the plastic lens
Grant 5,693,738 - Okazaki , et al. December 2, 1 | 1997-12-02 |
Polythiol useful for preparing sulfur-containing urethane-based resin and process for producing the same
Grant 5,608,115 - Okazaki , et al. March 4, 1 | 1997-03-04 |
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
Grant 5,594,088 - Nagata , et al. January 14, 1 | 1997-01-14 |
Casting epoxy resin, polythiol and releasing agent to form lens
Grant 5,374,668 - Kanemura , et al. December 20, 1 | 1994-12-20 |
Mercapto compound, its preparation process, and sulfur-containing urethane resins and lenses using the same
Grant 5,352,758 - Kanemura , et al. October 4, 1 | 1994-10-04 |
High refractive index plastic lens and composition therefor
Grant 5,306,799 - Kobayashi , et al. April 26, 1 | 1994-04-26 |
Mercapto compound, its preparation process, and sulfur-containing urethane resins and lenses using the same
Grant 5,283,312 - Kanemura , et al. February 1, 1 | 1994-02-01 |
Polymerizable monomer having at least one isopropenyl phenyl group and being capable of forming a high surface hardness transparent resin
Grant 5,260,439 - Suzuki , et al. November 9, 1 | 1993-11-09 |
Mercapto compound, a high refractive index resin and lens and a process for preparing them
Grant 5,191,055 - Kanemura , et al. March 2, 1 | 1993-03-02 |
Hard transparent resins and process for the production thereof
Grant 5,166,285 - Sasagawa , et al. November 24, 1 | 1992-11-24 |
High surface hardness transparent resin prepared from a compound having terminal isopropenyl phenyl groups
Grant 5,145,927 - Suzuki , et al. September 8, 1 | 1992-09-08 |
Highly-refractive plastic lens and process for making the lens
Grant 5,126,388 - Nagata , et al. * June 30, 1 | 1992-06-30 |
Low-hygroscopic sulfur-containing urethane resin, coating material and adhesive
Grant 5,126,425 - Sasagawa , et al. June 30, 1 | 1992-06-30 |
Hard transparent resins and process for the production thereof
Grant 5,104,953 - Sasagawa , et al. * April 14, 1 | 1992-04-14 |
Mercapto compound, a high refractive index resin and lens and a process for preparing them
Grant 5,087,758 - Kanemura , et al. February 11, 1 | 1992-02-11 |
Resin for urethane lenses, lenses comprising the resin, and a process for preparation of the resin and the lenses
Grant 5,059,673 - Kanemura , et al. October 22, 1 | 1991-10-22 |
Resin for plastic lens having high-refractive index, lens comprising the resin, and method for preparation of the lens
Grant 5,021,503 - Nagata , et al. June 4, 1 | 1991-06-04 |
Polyurethane base lens resin, plastic lens comprising the resin and preparation method of the lens
Grant 4,929,707 - Nagata , et al. May 29, 1 | 1990-05-29 |
High-refractivity plastic lens resin formed from a polyisocyanate and a polythiol
Grant 4,791,185 - Kanemura , et al. December 13, 1 | 1988-12-13 |
High-refractivity plastic lens resin formed by reacting at least one polyisocyanate with at least one polythiol
Grant 4,775,733 - Kanemura , et al. October 4, 1 | 1988-10-04 |
Resin for high-refractivity lenses and lenses made of same resin
Grant 4,542,201 - Kanemura , et al. September 17, 1 | 1985-09-17 |
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