US2952666A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phosphoro-polyesters and polyesterurethanes derived from phosphorodichloridates and aliphatic glycols
Assignee: Eastman Kodak Co
•
Filing: 1957-09-11
•
Granted: 1960-09-13
•
Expires: 1977-09-11
Abstract
No abstract record available.
Inventors
- 👤 Jr Harry W Coover
- 👤 Richard L Mcconnell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:44
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/64; C08G18/6461; C08G79/00; C08G79/02; C08G79/04; Y; Y10; Y10S; Y10S528/00; Y10S528/906
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
17 words
A HIGHLY POLYMERIC HIGH MELTING FIBER FORMINGLY POLYESTERURETHANE CONSISTING PREDOMINANTLY OF MACROMOLECULES CONTAINING THE FOLLOWING STRUCTURAL UNITS:
Claim 2
Dependent Claim
17 words
A HIGHLY POLYMERIC HIGH MELTING FIBER FORMINGLY POLYESTERURETHANE CONSISTING PREDOMINANTLY OF MACROMOLECULES CONTAINING THE FOLLOWING STRUCTURAL UNITS:
References Cited (Backward Citations)
US2058394A
Cited
US2374136A
Cited
US2435252A
Cited
US2572076A
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US2636876A
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US2674590A
Cited
US2612488A
Cited
US2716101A
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US2716100A
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US2743258A
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US2835652A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-09-13 | 1964-03-14 | 1964-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-13 | 1968-03-14 | 1968-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-13 | 1972-03-14 | 1972-09-13 | $7700.00 | Window Closed / Lapsed |