US3169945A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lactone polyesters
Assignee: Union Carbide Corp
•
Filing: 1963-10-07
•
Granted: 1965-02-16
•
Expires: 1983-10-07
Abstract
No abstract record available.
Inventors
- 👤 Hostettler Fritz
- 👤 Donald M Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:41
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/02; C08G63/06; C08G63/08; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/42; C08G18/4266; C08G18/4269; C08G63/60; C08G63/78; C08G63/82; C08G63/823; C08G69/00; C08G69/44
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
10 words
A PROCESS WHICH COMPRISES HEATING A LACTONE OF THE FORMULA:
Claim 2
Dependent Claim
10 words
A PROCESS WHICH COMPRISES HEATING A LACTONE OF THE FORMULA:
Claim 3
Dependent Claim
15 words
A PRODUCT FORMED BY THE REACTION OF AN ADMIXTURE CONTAINING A LACTONE OF THE FORMULA:
Claim 4
Dependent Claim
15 words
A PRODUCT FORMED BY THE REACTION OF AN ADMIXTURE CONTAINING A LACTONE OF THE 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) | 1968-02-16 | 1968-08-17 | 1969-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-16 | 1972-08-17 | 1973-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-16 | 1976-08-17 | 1977-02-16 | $7700.00 | Window Closed / Lapsed |