Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4632783 | Triphenylmethane dyestuffs | William M. Hung | 1986-12-30 |
| 4536367 | Method for sanitizing toilets | William M. Hung | 1985-08-20 |
| 4528136 | Process for preparing 2-[bis(aryl)methyl]benzoic acids | Paul Schmidt | 1985-07-09 |
| 4399291 | Process for the production of substituted aminophthalides | Paul Schmidt | 1983-08-16 |
| 4206144 | N,N-Dialkyl-N-aminoalkyl-N-(amino or nitro)phenylalkyl- and N-methyl-N-[3-(amino or nitro)phenoxy-2-hydroxy-1-propyl]-N,N-bis(3-aminopropyl)quaternary ammonium salts | Nathan N. Crounse | 1980-06-03 |