US3274290A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rigid, segmented copolyesters having recurring aromatic sulfonate ester units
Assignee: GE Chemicals Inc
•
Filing: 1963-10-25
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Granted: 1966-09-20
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Expires: 1983-10-25
Abstract
No abstract record available.
Inventors
- 👤 Eugene P Goldberg
- 👤 Scardiglia Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:51
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/68; C08G63/688; C08G63/6884; C08G63/6886; C08G75/00; C08G75/24; C08G63/78; C08G63/82; C08G63/87
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
20 words
A RIGID TOUGH LINEAR SEGMENTED BLOCK COPOLYMER CONSISTING ESSENTIALLY OF (1) RECURRING AROMATIC CARBOXYLATE ESTER STRUCTURAL UNITS OF THE FORMULA
Claim 2
Dependent Claim
20 words
A RIGID TOUGH LINEAR SEGMENTED BLOCK COPOLYMER CONSISTING ESSENTIALLY OF (1) RECURRING AROMATIC CARBOXYLATE ESTER STRUCTURAL UNITS OF THE FORMULA
References Cited (Backward Citations)
US3037960A
Cited
BE588783A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-19 | 1970-03-21 | 1970-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-19 | 1974-03-21 | 1974-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-19 | 1978-03-21 | 1978-09-20 | $7700.00 | Window Closed / Lapsed |