US2683136A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copolymers of hydroxyacetic acid with other alcohol acids
Assignee: EIDP Inc
•
Filing: 1950-10-25
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Granted: 1954-07-06
•
Expires: 1970-10-25
Abstract
No abstract record available.
Inventors
- 👤 Norton A Higgins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:56
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/02; C08G63/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
51 words
A LINEAR COPOLYMER OF MONOHYDROXY MONOCARBOXYLIC ALCOHOL ACIDS OF 2 TO 11 CARBON ATOMS IN WHICH HYDROXYACETIC ACID PREDOMINATES AND CHARACTERIZED BY HAVING AN INHERENT VISCOSITY GREATER THAN 0.2 AND BEING MANUALLY SPINNABLE INTO ORIENTABLE FIBERS BY TOUCHING THE MOLTEN COPOLYMER WITH A GLASS ROD AND DRAWING THE ROD AWAY SLOWLY.
Claim 2
Dependent Claim
51 words
A LINEAR COPOLYMER OF MONOHYDROXY MONOCARBOXYLIC ALCOHOL ACIDS OF 2 TO 11 CARBON ATOMS IN WHICH HYDROXYACETIC ACID PREDOMINATES AND CHARACTERIZED BY HAVING AN INHERENT VISCOSITY GREATER THAN 0.2 AND BEING MANUALLY SPINNABLE INTO ORIENTABLE FIBERS BY TOUCHING THE MOLTEN COPOLYMER WITH A GLASS ROD AND DRAWING THE ROD AWAY SLOWLY.
References Cited (Backward Citations)
US2362511A
Cited
GB550837A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-07-05 | 1958-01-04 | 1958-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-07-05 | 1962-01-04 | 1962-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-07-05 | 1966-01-04 | 1966-07-06 | $7700.00 | Window Closed / Lapsed |