Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5508451 | Process for the preparation of dialkali metal cromoglycates | Apurba Bhattacharya | 1996-04-16 |
| 4968352 | Diaryl pigments with improved heat stability and transparency containing coupled mixed bis-diazotized diamines and acid-substituted aromatic amines | John T. Ouderkirk | 1990-11-06 |