Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4298658 | Vapor permeation curable coatings based on alkyd resins | Chacko Thankachan, John G. Ritchie, Asok Sengupta | 1981-11-03 |
| 4267239 | Vapor permeation curable coatings based on alkyd resins | Chacko Thankachan, John G. Ritchie, Asok Sengupta | 1981-05-12 |