Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5612396 | Copolymers | Bernhard Leikauf, Akira Ohta | 1997-03-18 |
| 5609681 | Workable cementitious compositions | Josef F. Drs, Tom Melbye, Odd M. Tjugum | 1997-03-11 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5612396 | Copolymers | Bernhard Leikauf, Akira Ohta | 1997-03-18 |
| 5609681 | Workable cementitious compositions | Josef F. Drs, Tom Melbye, Odd M. Tjugum | 1997-03-11 |