Issued Patents All Time
Showing 1–21 of 21 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8273263 | Ionic compound | Daisuke Kubo, Takayuki Ueda, Keiichiro Mizuta, Hironobu Hashimoto, Taisuke Kasahara | 2012-09-25 |
| 7851550 | Method for surface crosslinking water-absorbing resin and method for manufacturing water-absorbing resin | Kenji Kadonaga, Yorimichi Dairoku, Shin-ichi Fujino, Hiroko Okochi, Yoshio Irie | 2010-12-14 |
| 6376581 | Cement dispersant, method for production thereof, and cement composition using the dispersant | Yoshio Tanaka, Akira Ohta, Tsuyoshi Hirata, Toru Uno, Tsutomu Yuasa | 2002-04-23 |
| 6241928 | Method for production of shaped hydrogel of absorbent resin | Takumi Hatsuda, Katsuhiro Kajikawa, Koji Miyake, Akito Yano, Takanori Murakami | 2001-06-05 |
| 6187841 | Cement composition using the dispersant of (meth)acrylic esters, (metha)acrylic acids polymers | Yoshio Tanaka, Akira Ohta, Tsuyoshi Hirata, Toru Uno, Tsutomu Yuasa | 2001-02-13 |
| 6107358 | Water-absorbent resin and method for production thereof | Nobuyuki Harada, Koji Miyake, Yoshihiro Motono, Takumi Hatsuda, Teruyuki Kanto +4 more | 2000-08-22 |
| 6048916 | Method for dispersion of cement | Tsuyoshi Hirata, Tsutomu Yuasa, Katsuhisa Shiote, Shogo Iwai, Koichiro Nagare | 2000-04-11 |
| 5925184 | Cement composition | Tsuyoshi Hirata, Tsutomu Yuasa, Toru Uno, Koichiro Nagare, Shogo Iwai | 1999-07-20 |
| 5854318 | Cement additive, method for producing the same, and cement composition | Hiroshi Ito, Yasuhiro Mori, Makoto Mizushima | 1998-12-29 |
| 5690704 | Additive for carbonaceous solid-water slurry, method for production thereof, and carbonaceous solid-water slurry compositions | Kenichiro Hayashi, Satoshi Yamada, Shoichi Takao | 1997-11-25 |
| 5688843 | Oil-absorbent composition, particulate oil absorber, oil-absorbent material, and oil-absorbent pack | Toru Inaoka, Tomoki Gomi, Yoshiyuki Onda, Toshio Tamura | 1997-11-18 |
| 5661206 | Fluidity control of cementitious compositions | Yoshio Tanaka, Akira Ohta, Tsuyoshi Hirata | 1997-08-26 |
| 5556835 | Gel-like fragrance composition | Toru Inaoka, Masahiko Shinohara | 1996-09-17 |
| 5523380 | Polymers having hydroxyl and carboxyl groups, and production process thereof | Hiroshi Itoh, Keiji Kofuji, Masahito Takagi | 1996-06-04 |
| 5476885 | Cement additive, method for producing the same, and cement composition | Hiroshi Ito, Yasuhiro Mori, Makoto Mizushima | 1995-12-19 |
| 5298570 | Biodegradable hydrophilic crosslinked polymer, process for producing it, and uses thereof | Hiroshi Ito, Masahito Takagi, Yoshio Irie, Keishi Tsuboi, Shigeru Yamaguchi | 1994-03-29 |
| 5185461 | Process for preparing 2-aminoethyl esters of methacrylic acid | Yasumasa Tanaka, Hideyuki Nishibayashi, Kouichi Tsuchitani | 1993-02-09 |
| 5137945 | Cement with sulfoalkyacrylate polymers | Tsuneo Tsubakimoto, Hiroya Kobayashi, Tsuyoshi Hirata, Hiroshi Ito | 1992-08-11 |
| 4972025 | Cement dispersant | Tsuneo Tsubakimoto, Yoshinori Sano, Tsuyoshi Hirata, Hiroshi Ito, Yasuhiro Mori | 1990-11-20 |
| 4870120 | Cement dispersant | Tsuneo Tsubakimoto, Hiroya Kobayashi, Tsuyoshi Hirata, Hiroshi Ito | 1989-09-26 |
| 4471100 | Copolymer and method for manufacture thereof | Tsuneo Tsubakimoto, Masahiro Hosoido | 1984-09-11 |