US2937203A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nu-tertiary-alkyl amides of terephthalic, isophthalic, and trimesic acids
Assignee: EIDP Inc
•
Filing: 1957-09-27
•
Granted: 1960-05-17
•
Expires: 1977-09-27
Abstract
No abstract record available.
Inventors
- 👤 Mack F Fuller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:24
CPC Classifications
C; C07; C07C; C07C233/00; C07C233/01; C07C233/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
7 words
NEW COMPOUNDS REPRESENTED BY THE FOLLOWING FORMULA:
Claim 2
Dependent Claim
7 words
NEW COMPOUNDS REPRESENTED BY THE FOLLOWING FORMULA:
References Cited (Backward Citations)
US2272466A
Cited
FR1075050A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-17 | 1963-11-16 | 1964-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-17 | 1967-11-16 | 1968-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-17 | 1971-11-16 | 1972-05-17 | $7700.00 | Window Closed / Lapsed |