Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8252869 | Process for production of crosslinked poly(meth) acrylic acid nitroxide compounds | Nobutaka Fujimoto, Koji Ueda | 2012-08-28 |
| 7816457 | Method for producing crosslinked poly(meth)acrylate compound | Nobutaka Fujimoto, Koji Ueda | 2010-10-19 |
| 7737231 | Process for producing water-absorbing resin | Masayoshi Handa, Takayasu Taniguchi, Yasuhiro Nawata | 2010-06-15 |
| 6869994 | Carboxylated polymer composition | Shigeki Hamamoto, Tomoki Kawakita, Masatoyo Yoshinaka | 2005-03-22 |
| 6599979 | Carboxylated polymer composition | Shinji Kobayashi, Shigeki Hamamoto, Mitsutaka Tabata, Tomoki Kawakita | 2003-07-29 |
| 6573330 | Process for preparing water-absorbent resin | Yasuhiro Nawata, Magoto Shirakawa, Masakazu Yamamori, Shioko Yoshinaka, Morio Nakamura | 2003-06-03 |
| 6235828 | Aqueous polymerization of acrylamide in the presence of polyvinylpyrrolidone | Shigeki Hamamoto, Nobutaka Fujimoto, Kimihiko Kondo, Morio Nakamura, Takao Okada | 2001-05-22 |
| 6084032 | Carboxylated polymer composition | Shinji Kobayashi, Shigeki Hamamoto, Mitsutaka Tabata, Tomoki Kawakita | 2000-07-04 |
| 5629395 | Process for producing cross-linked polymer containing carboxyl group | Shinji Kobayashi, Shigeki Hamamoto, Mitsutaka Tabata, Morio Nakamura | 1997-05-13 |
| 5326852 | Method for production of alkylene oxide polymers | Morio Nakamura, Shinji Kobayashi, Katsunori Tanaka, Masahiro Suzuki | 1994-07-05 |
| 4541871 | Water-absorbent resin having improved water-absorbency and improved water-dispersibility and process for producing same | Shigeji Obayashi, Morio Nakamura, Takushi Yamamoto | 1985-09-17 |
| 4507438 | Water-absorbent resin having improved water-absorbency and improved water-dispersibility and process for producing same | Shigeji Obayashi, Morio Nakamura, Takushi Yamamoto | 1985-03-26 |