Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5547607 | Stable aqueous alumina sol and method for preparing the same | Isao Yogo, Takanobu Kikawa | 1996-08-20 |
| 5407600 | Stable aqueous alumina sol and method for preparing the same | Isao Yogo, Takanobu Kikawa | 1995-04-18 |
| 5221497 | Elongated-shaped silica sol and method for preparing the same | Yoshitane Watanabe, Kenji Tanimoto, Tsutomu Kagamimiya, Makoto Kawashima | 1993-06-22 |
| 5100581 | Method of preparing high-purity aqueous silica sol | Yoshitane Watanabe, Hiromi Suzuki | 1992-03-31 |
| 4904304 | Chemical grout for ground injection and method for accretion | Yoshitane Watanabe, Eiji Okumura | 1990-02-27 |