Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8474829 | Sealing device | Masaya Otsuka, Daihachi Shojima | 2013-07-02 |
| 6270567 | Surface appearance-improving agent | Yasumasa Udagawa, Minoru Yaguchi | 2001-08-07 |
| 6166119 | Flowability additive | Hidenori Nagamine, Akira Ota | 2000-12-26 |
| 5716447 | Flowability additive | Akira Ohta, Tadashi Tsuchitani, Minoru Ueda | 1998-02-10 |
| 5350450 | Admixture for concrete mixes | Kenkichi Hamabe, Hiroshi Nomachi, Hideo Ogawa, Minoru Ueda | 1994-09-27 |