Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6509439 | Process for the production of polyamides from dinitriles and diamines | Richard Allen Hayes, David Neil Marks, Hari Babu Sunkara | 2003-01-21 |
| 6103863 | Process for preparation of polyamide from dinitrile and diamine | Richard Allen Hayes, David Neil Marks | 2000-08-15 |
| 6084056 | Process for the hydrolysis of adiponitrile and the production of nylon 6,6 utilizing low catalyst levels | Richard Allen Hayes, David Neil Marks | 2000-07-04 |
| 6075117 | Process for the hydrolysis of adiponitrile and the production of nylon 6,6 using dicarboxylic acids as the sole catalyst | Richard Allen Hayes, David Neil Marks | 2000-06-13 |