Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7049462 | Production process for product of dehydration reaction and apparatus used for the production | Toru Uno, Yoshiyuki Onda, Tsutomu Yuasa, Masato Nishiue, Hisamoto Kawano | 2006-05-23 |
| 7030282 | Storage and/or transportation method of polyalkylene glycol monomers | — | 2006-04-18 |
| 7026442 | Storage and/or transportation method of alkoxy (poly) alkylene glycol-containing materials | — | 2006-04-11 |
| 6825289 | Method for producing chemical reactive substance and polycarboxylic acid produced thereby | Masaya Yamamoto, Toru Uno, Yoshiyuki Onda, Minoru Miyagawa | 2004-11-30 |
| 6545083 | Cement additive | Tsuyoshi Hirata, Tsutomu Yuasa, Hirokatsu Kawakami | 2003-04-08 |
| 6388038 | Method for producing polycarboxylic acid for cement dispersant and cement composition | Tsuyoshi Hirata, Tsutomu Yuasa, Katsuhisa Shiote, Syogo Iwai | 2002-05-14 |
| 6384141 | Anti-shrinkage agent for hydraulic material | Tsuyoshi Hirata | 2002-05-07 |
| 6174980 | Cement dispersant, method for producing polycarboxylic acid for cement dispersant and cement composition | Tsuyoshi Hirata, Tsutomu Yuasa, Katsuhisa Shiote, Syogo Iwai | 2001-01-16 |
| 6166112 | Cement admixture and cement composition | Tsuyoshi Hirata, Tsutomu Yuasa | 2000-12-26 |
| 6048916 | Method for dispersion of cement | Tsuyoshi Hirata, Tsutomu Yuasa, Katsuhisa Shiote, Shogo Iwai, Hideyuki Tahara | 2000-04-11 |
| 5925184 | Cement composition | Tsuyoshi Hirata, Tsutomu Yuasa, Toru Uno, Hideyuki Tahara, Shogo Iwai | 1999-07-20 |
| 5912284 | Cement additive, its production process and use | Tsuyoshi Hirata, Tsutomu Yuasa, Katsuhisa Shiote, Syogo Iwai | 1999-06-15 |
| 5834576 | Acrylic acid derivatives, method for preparing the acrylic acid derivatives, and acrylic acid polymers | Hideaki Nagano, Koichi Nakagawa, Keiji Yurugi, Mitsuaki Makino, Tsuyoshi Hirata +1 more | 1998-11-10 |