US2936296A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyesters from terephthalic acid, ethylene glycol and a higher polyfunctional alcohol
Assignee: General Electric Co
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Filing: 1954-12-10
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Granted: 1960-05-10
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Expires: 1974-12-10
Abstract
No abstract record available.
Inventors
- 👤 Frank M Precopio
- 👤 Daniel W Fox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:08
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/42; C08G18/4205; C08G18/4208; C08G18/4211; C08G18/4219; C08G63/00; C08G63/02; C08G63/12; C08G63/16; C08G63/20; H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
A POLYESTER RESIN CONSISTING ESSENTIALLY OF THE PRODUCT OF REACTION OBTAINED BY HEATING A MIXTURE OF (1) FROM ABOUT 25 TO 56 EQUIVALENT PERCENT OF A LOWER DIALKYL ESTER OF A MEMBER SELECTED FROR THE CLASS CONSISTING OF TEREPHTHALIC ACID AND ISOPTHALIC ACID AND MIXTURES OF SAID MEMBERS, (2) FROM ABOUT 15 TO 46 EQUIVALENT PERCENT OF ETHYLENE GLYCOL, AND (3) FROM ABOUT 13 TO 44 EQUIVALENT PERCENT OF A SATURATED ALIPHATIC POLYHYDRIC ALCOHOL HAVING AT LEAST THREE HYDROXYL GROUPS, THE SUM OF THE EQUIVALENT PERCENTS OF (1), (2), AND (3) BEING EQUAL TO 100 EQUIVALENT PERCENT.
Claim 2
Dependent Claim
97 words
A POLYESTER RESIN CONSISTING ESSENTIALLY OF THE PRODUCT OF REACTION OBTAINED BY HEATING A MIXTURE OF (1) FROM ABOUT 25 TO 56 EQUIVALENT PERCENT OF A LOWER DIALKYL ESTER OF A MEMBER SELECTED FROR THE CLASS CONSISTING OF TEREPHTHALIC ACID AND ISOPTHALIC ACID AND MIXTURES OF SAID MEMBERS, (2) FROM ABOUT 15 TO 46 EQUIVALENT PERCENT OF ETHYLENE GLYCOL, AND (3) FROM ABOUT 13 TO 44 EQUIVALENT PERCENT OF A SATURATED ALIPHATIC POLYHYDRIC ALCOHOL HAVING AT LEAST THREE HYDROXYL GROUPS, THE SUM OF THE EQUIVALENT PERCENTS OF (1), (2), AND (3) BEING EQUAL TO 100 EQUIVALENT PERCENT.
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) | 1963-05-10 | 1963-11-09 | 1964-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-10 | 1967-11-09 | 1968-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-10 | 1971-11-09 | 1972-05-10 | $7700.00 | Window Closed / Lapsed |