Issued Patents All Time
Showing 26–47 of 47 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6454850 | Cement admixture and cement composition comprising this | Akihiko Yamashita, Hiroshi Mitsukawa | 2002-09-24 |
| 6388038 | Method for producing polycarboxylic acid for cement dispersant and cement composition | Tsutomu Yuasa, Katsuhisa Shiote, Koichiro Nagare, Syogo Iwai | 2002-05-14 |
| 6384141 | Anti-shrinkage agent for hydraulic material | Koichiro Nagare | 2002-05-07 |
| 6376581 | Cement dispersant, method for production thereof, and cement composition using the dispersant | Yoshio Tanaka, Akira Ohta, Toru Uno, Tsutomu Yuasa, Hideyuki Tahara | 2002-04-23 |
| 6362364 | Method for production of esterified product and apparatus therefor | Hiromichi Tanaka, Tsutomu Yuasa | 2002-03-26 |
| 6294015 | Cement admixture and cement composition | Akihiko Yamashita, Tsutomu Yuasa, Hirokazu Niwa | 2001-09-25 |
| 6265495 | Method for production of esterified product | Tsutomu Yuasa | 2001-07-24 |
| 6258162 | Cement composition | Hirokatsu Kawakami, Hirokazu Niwa, Hiromichi Tanaka, Tsutomu Yuasa | 2001-07-10 |
| 6187841 | Cement composition using the dispersant of (meth)acrylic esters, (metha)acrylic acids polymers | Yoshio Tanaka, Akira Ohta, Toru Uno, Tsutomu Yuasa, Hideyuki Tahara | 2001-02-13 |
| 6174980 | Cement dispersant, method for producing polycarboxylic acid for cement dispersant and cement composition | Tsutomu Yuasa, Katsuhisa Shiote, Koichiro Nagare, Syogo Iwai | 2001-01-16 |
| 6165262 | Cement additive and cement composition using same | Katsuyuki Kono, Tsutomu Yuasa | 2000-12-26 |
| 6166112 | Cement admixture and cement composition | Tsutomu Yuasa, Koichiro Nagare | 2000-12-26 |
| 6087418 | Cement admixture and cement composition | Akihiko Yamashita, Tsutomu Yuasa, Hirokazu Niwa | 2000-07-11 |
| 6048916 | Method for dispersion of cement | Tsutomu Yuasa, Katsuhisa Shiote, Shogo Iwai, Koichiro Nagare, Hideyuki Tahara | 2000-04-11 |
| 5925184 | Cement composition | Tsutomu Yuasa, Toru Uno, Koichiro Nagare, Hideyuki Tahara, Shogo Iwai | 1999-07-20 |
| 5912284 | Cement additive, its production process and use | Tsutomu Yuasa, Katsuhisa Shiote, Syogo Iwai, Koichiro Nagare | 1999-06-15 |
| 5856288 | Polyalkylene glycol-polyglyoxylate block copolymer, its production process and use | Takuya Saeki, Hideyuki Nishibayashi, Shigeru Yamaguchi | 1999-01-05 |
| 5834576 | Acrylic acid derivatives, method for preparing the acrylic acid derivatives, and acrylic acid polymers | Hideaki Nagano, Koichi Nakagawa, Keiji Yurugi, Mitsuaki Makino, Koichiro Nagare +1 more | 1998-11-10 |
| 5661206 | Fluidity control of cementitious compositions | Yoshio Tanaka, Akira Ohta, Hideyuki Tahara | 1997-08-26 |
| 5137945 | Cement with sulfoalkyacrylate polymers | Tsuneo Tsubakimoto, Hideyuki Tahara, Hiroya Kobayashi, Hiroshi Ito | 1992-08-11 |
| 4972025 | Cement dispersant | Tsuneo Tsubakimoto, Yoshinori Sano, Hideyuki Tahara, Hiroshi Ito, Yasuhiro Mori | 1990-11-20 |
| 4870120 | Cement dispersant | Tsuneo Tsubakimoto, Hideyuki Tahara, Hiroya Kobayashi, Hiroshi Ito | 1989-09-26 |