Patent US2623031A successfully refreshed from Google Patents.
US2623031A
Expired / Lapsed
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Elastic linear copolyesters
Assignee: EIDP Inc
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Filing: 1950-03-20
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Granted: 1952-12-23
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Expires: 1970-03-20
Abstract
No abstract record available.
Inventors
- 👤 Snyder Mark Dagenkolb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:17
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/66; C08G63/02; C08G63/12; C08G63/16; C08G63/18; C08G63/181; C08L; C08L67/00; C08L67/02
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
35 words
A NEW COMPOSITION OF MATTER HAVING AN INTRINSIC VISCOSITY OF AT LEAST 0.5, CONSISTING ESSENTIALLY OF THE LINEAR COPOLYESTER WHICH RESULTS FROM THE MELT COPOLYMERIZATION OF AT LEAST ONE ACYCLIC DICARBOXYLIC ACID OF 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) | 1955-12-23 | 1956-06-23 | 1956-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-23 | 1960-06-23 | 1960-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-23 | 1964-06-23 | 1964-12-23 | $7700.00 | Window Closed / Lapsed |