Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4352922 | Method of producing an improved poly-(amide-imide) resin by reacting a phenanthrene with formaldehyde followed by oxidizing to produce a polycarboxylated product followed by reaction with an aromatic diamine | Joseph G. Robinson, Angela M. Carswell | 1982-10-05 |
| 4346212 | Phenanthrene/HCHO derived polyamide-imide | Joseph G. Robinson, Angela M. Carswell | 1982-08-24 |