Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4977227 | Lignosulfonic graft copolymer as a cement dispersant | Hiroshi Nomachi, Toru Nemoto, Yoshio Tanaka, Akira Ohta | 1990-12-11 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4977227 | Lignosulfonic graft copolymer as a cement dispersant | Hiroshi Nomachi, Toru Nemoto, Yoshio Tanaka, Akira Ohta | 1990-12-11 |