US3004955A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sulfone polyesters
Assignee: Union Carbide Corp
•
Filing: 1957-10-07
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Granted: 1961-10-17
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Expires: 1977-10-07
Abstract
No abstract record available.
Inventors
- 👤 Christian F Horn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:03
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/68; C08G63/688; C08G63/6884; C08G63/6886
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
14 words
A FIBER-FORMING LINEAR POLYMER CONSISTING ESSENTIALLY OF REPEATING STRUCTURAL UNITS OF THE GENERAL FORMULA
Claim 2
Dependent Claim
14 words
A FIBER-FORMING LINEAR POLYMER CONSISTING ESSENTIALLY OF REPEATING STRUCTURAL UNITS OF THE GENERAL 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) | 1964-10-16 | 1965-04-17 | 1965-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-16 | 1969-04-17 | 1969-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-16 | 1973-04-17 | 1973-10-17 | $7700.00 | Window Closed / Lapsed |