US2510567A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polythioesters and preparation thereof
Assignee: Wingfoot Corp
•
Filing: 1946-11-02
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Granted: 1950-06-06
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Expires: 1966-11-02
Abstract
No abstract record available.
Inventors
- 👤 Paul J Flory
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:05
CPC Classifications
C; C08; C08G; C08G75/00; C08G75/26
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
20 words
A POLYTHIOESTER PREPARED BY THE CONDENSATION OF AT LEAST ONE ACID CHLORIDE OF A DIBASIC ACID HAVING A STRUCTURAL 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) | 1953-06-05 | 1953-12-05 | 1954-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-06-05 | 1957-12-05 | 1958-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-06-05 | 1961-12-05 | 1962-06-06 | $7700.00 | Window Closed / Lapsed |