US3423281A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copolyesters of mixed phthalic acids,aliphatic dicarboxylic acids and tetramethylene glycol
Assignee: Goodyear Tire and Rubber Co
•
Filing: 1964-03-10
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Granted: 1969-01-21
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Expires: 1984-03-10
Abstract
No abstract record available.
Inventors
- 👤 Maria V Wiener
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:03
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/16; C08G63/18; C08G63/181; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31786
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
36 words
A RANDOM LINEAR COPOLYEESTER RESIN OF TETRAMETHYLENE GLYCOL, TEREPHTHALIC ACID, ISOPHTHALIC ACID AND AN ALIPHATIC DICARBOXYLIC ACID CONTAINING FROM 6 TO 12 CARBON ATOMS, THE MOLAR PROPORTION OF THE ACID COMPONENTS OF SAID COPOLYESTER CONSISTING OF:
Claim 2
Dependent Claim
36 words
A RANDOM LINEAR COPOLYEESTER RESIN OF TETRAMETHYLENE GLYCOL, TEREPHTHALIC ACID, ISOPHTHALIC ACID AND AN ALIPHATIC DICARBOXYLIC ACID CONTAINING FROM 6 TO 12 CARBON ATOMS, THE MOLAR PROPORTION OF THE ACID COMPONENTS OF SAID COPOLYESTER CONSISTING OF:
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) | 1972-01-21 | 1972-07-22 | 1973-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-21 | 1976-07-22 | 1977-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-21 | 1980-07-22 | 1981-01-21 | $7700.00 | Window Closed / Lapsed |