Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7230061 | Process for production of water-soluble (meth)acrylic polymers, water-soluble (meth)acrylic polymers, and use thereof | Masaru Ishikawa | 2007-06-12 |
| 6794473 | Acrylic acid (salt) polymer, its production process and uses | Shigeru Yamaguchi, Tsuyoshi Hirata | 2004-09-21 |
| 6521721 | Polymer production process | Yoshihiro Maeda, Shigeru Yamaguchi, Kaoru Iwasaki | 2003-02-18 |
| 6297336 | Detergent builder, production process therefor, and poly(meth)acrylic acid (or salt) polymer and use thereof | Shigeru Yamaguchi, Yoshihiro Maeda | 2001-10-02 |
| 6037431 | Surfactant absorbing agent and method and surfactant carrying material | Tomoki Gomi, Takashi Namba | 2000-03-14 |
| 5403821 | Drilling fluid additives | Yoshio Irie, Teruaki Fujiwara | 1995-04-04 |
| 5135677 | Process for producing acid-type maleic acid polymer and water-treating agent and detergent additive containing said polymer | Shigeru Yamaguchi, Yoshio Irie, Teruaki Fujiwara | 1992-08-04 |
| 5064563 | Process for producing and use of maleic acid (co-) polymer salt improved in biodegradability | Shigeru Yamaguchi, Tokihiro Yokoi, Yoshio Irie, Teruaki Fujiwara | 1991-11-12 |
| 4500693 | Water soluble copolymer method for manufacture therefore and use thereof | Hidetoshi Takehara, Yohichi Nakagawa | 1985-02-19 |