US2902469A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Linear polyesters
Assignee: General Electric Co
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Filing: 1956-04-13
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Granted: 1959-09-01
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Expires: 1976-04-13
Abstract
No abstract record available.
Inventors
- 👤 Charles A Burkhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:22
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/42; C; C08; C08F; C08F18/00; C08F18/02; C08F18/04; C08F18/08; C08G; C08G63/00; C08G63/66; C08G63/668; C08G63/78; C08G63/82
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
44 words
A POLYMERIC LINEAR POLYESTER HAVING A MOLECULAR WEIGHT OF AT LEAST 3,000 AND BEING CAPABLE OF BEING COLD DRAWN, SAID POLYESTER BEING THE PRODUCT OF CONDENSATION UNDER HEAT IN THE MOLAR RATIO OF FROM 1 TO 3 MOLS OF A GLYCOL HAVING THE FORMULA
Claim 2
Dependent Claim
44 words
A POLYMERIC LINEAR POLYESTER HAVING A MOLECULAR WEIGHT OF AT LEAST 3,000 AND BEING CAPABLE OF BEING COLD DRAWN, SAID POLYESTER BEING THE PRODUCT OF CONDENSATION UNDER HEAT IN THE MOLAR RATIO OF FROM 1 TO 3 MOLS OF A GLYCOL HAVING THE FORMULA
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) | 1962-08-31 | 1963-03-02 | 1963-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-31 | 1967-03-02 | 1967-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-31 | 1971-03-02 | 1971-09-01 | $7700.00 | Window Closed / Lapsed |