Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4841021 | Polypyridinium | Alan R. Katritzky, Larry R. Krepski, Jerald K. Rasmussen, Steven M. Heilmann | 1989-06-20 |
RT
Richard D. Tarr
Overall (1989): #65,080 of 140,708Top 50%
1
Patents 1989