Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8058328 | Cement admixture | Hiroshi Yamazaki, Hiromichi Tanaka | 2011-11-15 |
| 7662884 | Cement admixture and production method thereof | Tsutomu Yuasa, Hiromichi Tanaka, Noboru Sakamoto, Tomotaka Nishikawa, Hiroko Izukashi +3 more | 2010-02-16 |
| 7638563 | Polycarboxylic acid concrete admixture | Tomotaka Nishikawa, Toru Uno, Hirokazu Yamamoto, Yukiko Nishikawa, Hiromichi Tanaka | 2009-12-29 |
| 7405264 | Polycarboxylic acid copolymer, production method and use thereof | Tsutomu Yuasa, Tomotaka Nishikawa, Noboru Sakamoto, Tsuyoshi Hirata, Hiroko Izukashi +3 more | 2008-07-29 |
| 7368488 | Cement admixture and cement admixture composite | Tomotaka Nishikawa, Hiromichi Tanaka, Minoru Miyagawa, Shogo Iwai | 2008-05-06 |
| 7321006 | Admixture for cement | Toshio Hayashiya, Tsutomu Yuasa, Tsuyoshi Hirata, Hiroshi Yamazaki | 2008-01-22 |
| 6864337 | Polycarboxylic acid copolymer, production method and use thereof | Tsutomu Yuasa, Tomotaka Nishikawa, Noboru Sakamoto, Tsuyoshi Hirata, Hiroko Izukashi +3 more | 2005-03-08 |
| 6498231 | Vinylpyrrolidone polymer and its stabilization and preservation processes | Daijo Tomihisa, Toshiaki Kuriyama, Akio Naka, Hideyuki Nishibayashi, Yoshitomo Nakata | 2002-12-24 |
| 6346600 | Vinylpyrrolidone polymer and its stabilization and preservation processes | Daijo Tomihisa, Toshiaki Kuriyama, Akio Naka, Hideyuki Nishibayashi, Yoshitomo Nakata | 2002-02-12 |
| 5929202 | Method for production of ethylene sulfide/sulfur copolymer and ethylene sulfide/sulfur copolymer | Yoshihiro Arita, Thierry Aubert | 1999-07-27 |