Patent US3133898A successfully refreshed from Google Patents.
US3133898A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diphenol terephthalate-diphenol isophthalate copolyesters
Assignee: Goodyear Tire and Rubber Co
•
Filing: 1959-09-08
•
Granted: 1964-05-19
•
Expires: 1979-09-08
Abstract
No abstract record available.
Inventors
- 👤 Max H Keck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:40
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/16; C08G63/18; C08G63/19; C08G63/193; C08G63/199; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31681; Y10T428/31786
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
A RANDOM DIPHENOL TEREPHTHALATE-DIPHENOL ISOPHTHALATE COPOLYESTER IN WHICH THE DIPHENOL TEREPHTHALATE UNITS COMPRISE FROM 90 TO 70% OF THE SUM OF THE DIPHENOL TEREPHTHALATE AND DIPHENOL ISOPHTHALATE UNITS IN THE COPOLYESTER AND THE DIPHENOL ISOPHTHALATE UNITS COMPRISE FROM 10 TO 30% OF SAID SUM, SAID DIPHENOL HAVING THE GENERAL FORMULA HO-(X-1,4-PHENYLENE)-C(-R)(-R'')-(X-1,4-PHENYLENE)-OH IN WHICH R AND R'' ARE SELECTED FROM THE GROUP CONSISTING OF ALKYL, ALKENE, ALKARYL, ARYL RADICALS AND HYDROGEN AND R AND R'' MAY TOGETHER FORM A RING AND X IS A MEMBER SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, CHLORINE AND ALKYL RADICALS HAVING FROM 1 TO 4 CARBON ATOMS IN THE ALKYL CHAIN.
Claim 2
Dependent Claim
106 words
A RANDOM DIPHENOL TEREPHTHALATE-DIPHENOL ISOPHTHALATE COPOLYESTER IN WHICH THE DIPHENOL TEREPHTHALATE UNITS COMPRISE FROM 90 TO 70% OF THE SUM OF THE DIPHENOL TEREPHTHALATE AND DIPHENOL ISOPHTHALATE UNITS IN THE COPOLYESTER AND THE DIPHENOL ISOPHTHALATE UNITS COMPRISE FROM 10 TO 30% OF SAID SUM, SAID DIPHENOL HAVING THE GENERAL FORMULA HO-(X-1,4-PHENYLENE)-C(-R)(-R'')-(X-1,4-PHENYLENE)-OH IN WHICH R AND R'' ARE SELECTED FROM THE GROUP CONSISTING OF ALKYL, ALKENE, ALKARYL, ARYL RADICALS AND HYDROGEN AND R AND R'' MAY TOGETHER FORM A RING AND X IS A MEMBER SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, CHLORINE AND ALKYL RADICALS HAVING FROM 1 TO 4 CARBON ATOMS IN THE ALKYL CHAIN.
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) | 1967-05-19 | 1967-11-18 | 1968-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-19 | 1971-11-18 | 1972-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-19 | 1975-11-18 | 1976-05-19 | $7700.00 | Window Closed / Lapsed |