Issued Patents All Time
Showing 26–50 of 75 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6335037 | Cosmetic comprising spherical hydrophobic fine silica particles | Muneo Kudo, Akira Yamamoto | 2002-01-01 |
| 6316155 | External additive for electrostatically charged latent image developing toner | Muneo Kudo, Masaki Tanaka, Yoshiteru SAKATSUME, Mitsuo Asai | 2001-11-13 |
| 6140524 | Method for preparing a short-chain polysulfide silane mixture | Hideyoshi Yanagisawa | 2000-10-31 |
| 6114560 | Method for preparing a short-chain polysulfide silane mixture | Hideyoshi Yanagisawa | 2000-09-05 |
| 6077966 | Preparation of water-soluble organic silicon compounds | Kazuyuki Matsumura, Mitsuo Asai | 2000-06-20 |
| 6015870 | Process for preparing polysulfide silanes | Hideyoshi Yanagisawa, Akira Yamamoto | 2000-01-18 |
| 6011088 | Organic silicon compounds, inorganic fillers treated therewith, and electrically insulating compositions | Hideyoshi Yanagisawa | 2000-01-04 |
| 5883185 | Water soluble fiber-treating agent and method of making | Kazuyuki Matsumura, Mitsuo Asai | 1999-03-16 |
| 5840952 | Method of manufacturing 3-mercaptopropylalkoxy silane | Muneo Kudo, Hideyoshi Yanagisawa, Akira Yamamoto, Satoru Beppu, Hiroyuki Iwaki +1 more | 1998-11-24 |
| 5817726 | Water-absorptive soft ocular lens material, water-absorptive soft ocular lens shaped product made thereof, water-absorptive soft ocular lens made thereof and process for its production | Kazuhiko Nakada, Noriko Yoshimatsu, Toshio Yamazaki | 1998-10-06 |
| 5817852 | Desulfurization of polysulfide silanes | Hideyoshi Yanagisawa | 1998-10-06 |
| 5786434 | Water-absorptive soft contact lens material and contact lens made thereof | Ichiro Ando, Toru Kawaguchi, Toshio Yamazaki | 1998-07-28 |
| 5777032 | Ocular lens and a method for its production | Yasuhiro Yokoyama, Yuriko Watanabe, Sadayasu Tanikawa, Toshio Yamazaki | 1998-07-07 |
| 5739369 | Water-soluble surface treating agents | Kazuyuki Matsumura, Mitsuo Asai | 1998-04-14 |
| 5705665 | Organic silicon compounds and process of making | Hideyoshi Yanagisawa, Masayuki Takahashi | 1998-01-06 |
| 5705590 | Water absorption preventing agent having water solubility and a method for preventing water absorption | Tomohisa Suzuki, Kenichi Isobe, Mitsuo Asai, Akira Yamamoto | 1998-01-06 |
| 5703143 | Ocular lens material | Haruyuki Hiratani, Kazuhiko Nakada, Toshio Yamazaki | 1997-12-30 |
| 5703159 | Modification of resins with isocyanatosiloxanes | Toshio Yamazaki, Akira Yamamoto | 1997-12-30 |
| 5670594 | Low water-absorptive ocular lens material, low water-absorptive ocular lens shaped product made thereof, low water-absorptive ocular lens made thereof and process for its production | Kazuhiko Nakada, Noriko Yoshimatsu, Toshio Yamazaki | 1997-09-23 |
| 5605942 | Contact lens material | Haruyuki Hiratani, Kazuhiko Nakada, Toshio Yamazaki, Hideto Kato | 1997-02-25 |
| 5587445 | Highly oxygen-permeable heat-resistant material | Shigeo Mochizuki, Masahiro Matsumoto, Toshio Yamazaki | 1996-12-24 |
| 5556929 | Ocular lens material | Yasuhiro Yokoyama, Yuriko Watanabe, Akinori Okumura, Toshio Yamazaki | 1996-09-17 |
| 5543442 | Ocular lens material | Haruyuki Hiratani, Kazuhiko Nakata, Toshio Yamazaki, Hideto Kato | 1996-08-06 |
| 5519070 | Soft ocular lens material | Tsuyoshi Watanabe, Ichiro Ando, Toshio Yamazaki | 1996-05-21 |
| 5508369 | Organopolysiloxanes having a silanol group and process of making them | Toshio Yamazaki, Nobuyuki Suzuki, Shinichi Morioka | 1996-04-16 |