US2677676A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of polymers from adipic acid derivatives
Assignee: EIDP Inc
•
Filing: 1950-08-11
•
Granted: 1954-05-04
•
Expires: 1970-08-11
Abstract
No abstract record available.
Inventors
- 👤 Gordon M Nichols
- 👤 Charles J Albisetti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:18
CPC Classifications
C; C08; C08F; C08F22/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
14 words
A PROCESS OF PREPARING POLYMERIC COMPOUNDS WHICH COMPRISES HEATING COMPOUND HAVING THE GENERAL FORMULA:
Claim 2
Dependent Claim
14 words
A PROCESS OF PREPARING POLYMERIC COMPOUNDS WHICH COMPRISES HEATING COMPOUND HAVING THE GENERAL FORMULA:
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-03 | 1957-11-02 | 1958-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-03 | 1961-11-02 | 1962-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-03 | 1965-11-02 | 1966-05-04 | $7700.00 | Window Closed / Lapsed |