Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5429758 | Graft copolymers prepared from solvent-free reactions and dispersant derivatives thereof | Katsumi Hayashi, Curtis R. Scharf | 1995-07-04 |
| 4670173 | Oil-soluble reaction products of an acylated reaction product, a polyamine, and mono-functional acid | Katsumi Hayashi, Curtis R. Scharf | 1987-06-02 |