US2965613A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copolyesters
Assignee: Goodyear Tire and Rubber Co
•
Filing: 1954-03-02
•
Granted: 1960-12-20
•
Expires: 1974-03-02
Abstract
No abstract record available.
Inventors
- 👤 Charles R Milone
- 👤 Marcia C Shaffer
- 👤 Frederick S Leutner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:43
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/16; C08G63/18; C08G63/181
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
32 words
A RANDOM ETHYLENE TEREPHTHALATE-ETHYLENE ISOPHTHALATE COPOLYESTER IN WHICH THE ETHYLENE TEREPHTHALATE UNITS COMPRISE FROM 90 TO 15 PERCENT OF THE SUM OF THE ETHYLENE TEREPHTHALATE AND ETHYLENE ISOPHTHALATE UNITS IN THE COPOLYESTER.
Claim 2
Dependent Claim
32 words
A RANDOM ETHYLENE TEREPHTHALATE-ETHYLENE ISOPHTHALATE COPOLYESTER IN WHICH THE ETHYLENE TEREPHTHALATE UNITS COMPRISE FROM 90 TO 15 PERCENT OF THE SUM OF THE ETHYLENE TEREPHTHALATE AND ETHYLENE ISOPHTHALATE UNITS IN THE COPOLYESTER.
References Cited (Backward Citations)
US2497376A
Cited
GB673066A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-20 | 1964-06-20 | 1964-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-20 | 1968-06-20 | 1968-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-20 | 1972-06-20 | 1972-12-20 | $7700.00 | Window Closed / Lapsed |