Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4885112 | Surface active secondary amidoamino acid or salt compounds | Makoto Kubo, Kazuhiko Okabe, Masanobu Tanigaki, Masaji Yamanishi, Hajime Hirota | 1989-12-05 |
| 4876034 | Secondary amidoamino acid based detergent composition | Hajime Hirota, Hidekazu Ogino, Sahoko Igarashi | 1989-10-24 |
| 4846947 | Process for preparing an alkanolammonium salt or ammonium salt of surface active agents | Makoto Kubo, Kazuhiko Okabe, Masanobu Tanigaki, Masaji Yamanishi | 1989-07-11 |