US3421974A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copolyesters of mixed phthalic acids,acyclic dicarboxylic acids and tetramethylene glycol
Assignee: Goodyear Tire and Rubber Co
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Filing: 1964-09-18
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Granted: 1969-01-14
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Expires: 1984-09-18
Abstract
No abstract record available.
Inventors
- 👤 Maria V Wiener
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:59
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
99 words
A RANDOM LINEAR COPOLYESTER RESIN CONSISTING OF UNITS OF TETRAMETHYLENE GLYCOL, TEREPHTHALIC ACID, ISOPHTHALIC ACID AND AN ACYCLIC DICARBOXYLIC ACID CONTAINING FROM 6 TO 12 CARBON ATOMS, IN WHICH THE TEREPHTHALIC ACID UNITS AND THE ISOPHTHALIC ACID UNITS ARE PRESENT IN THE RATIO OF 3:2 TO 2:3, THE SUM OF THE TEREPHTHALIC ACID UNITS PLUS THE ISOPHTHALIC ACID UNITS COMPRISING FROM 70 TO 85 MOL PERCENT OF THE TOTAL MOLS OF ACID COMPONENT OF THE RESIN, THE ACYCLIC DICAARBOXYLIC ACID UNITS CORRESPONDINGLY COMPRISING FROM 30 TO 15 MOL PERCENT OF THE TOTAL MOLS OF ACID COMPONENT OF THE RESIN.
Claim 2
Dependent Claim
99 words
A RANDOM LINEAR COPOLYESTER RESIN CONSISTING OF UNITS OF TETRAMETHYLENE GLYCOL, TEREPHTHALIC ACID, ISOPHTHALIC ACID AND AN ACYCLIC DICARBOXYLIC ACID CONTAINING FROM 6 TO 12 CARBON ATOMS, IN WHICH THE TEREPHTHALIC ACID UNITS AND THE ISOPHTHALIC ACID UNITS ARE PRESENT IN THE RATIO OF 3:2 TO 2:3, THE SUM OF THE TEREPHTHALIC ACID UNITS PLUS THE ISOPHTHALIC ACID UNITS COMPRISING FROM 70 TO 85 MOL PERCENT OF THE TOTAL MOLS OF ACID COMPONENT OF THE RESIN, THE ACYCLIC DICAARBOXYLIC ACID UNITS CORRESPONDINGLY COMPRISING FROM 30 TO 15 MOL PERCENT OF THE TOTAL MOLS OF ACID COMPONENT OF THE RESIN.
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) | 1972-01-14 | 1972-07-15 | 1973-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-14 | 1976-07-15 | 1977-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-14 | 1980-07-15 | 1981-01-14 | $7700.00 | Window Closed / Lapsed |