US2926145A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phosphono-polyesters from 1,4-cyclohexanedimethanol and polyester-urethanes therefrom
Assignee: Eastman Kodak Co
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Filing: 1957-09-11
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Granted: 1960-02-23
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Expires: 1977-09-11
Abstract
No abstract record available.
Inventors
- 👤 Richard L Mcconnell
- 👤 Jr Harry W Coover
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:22
CPC Classifications
C; C08; C08G; C08G79/00; C08G79/02; C08G79/04; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/64; C08G18/6461
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
A LINEAR PHOSPHONO POLYESTER CONSISTING PREDOMINANTLY OF RECURRING PHOSPHONO-ESTER STRUCTURAL UNITS HAVING THE FOLLOWING FORMULA WHEREIN THE RIGHT HAND SIDE OF ONE UNIT IS CONNECTED TO THE LEFT HAND SIDE OF THE NEXT UNIT AND THE ENDS OF EACH MOLECULE COMPOSED OF SUCH UNITS ARE PREDOMINANTLY TERMINATED WITH -OH GROUPS:
Claim 2
Dependent Claim
50 words
A LINEAR PHOSPHONO POLYESTER CONSISTING PREDOMINANTLY OF RECURRING PHOSPHONO-ESTER STRUCTURAL UNITS HAVING THE FOLLOWING FORMULA WHEREIN THE RIGHT HAND SIDE OF ONE UNIT IS CONNECTED TO THE LEFT HAND SIDE OF THE NEXT UNIT AND THE ENDS OF EACH MOLECULE COMPOSED OF SUCH UNITS ARE PREDOMINANTLY TERMINATED WITH -OH GROUPS:
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) | 1963-02-22 | 1963-08-24 | 1964-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-22 | 1967-08-24 | 1968-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-22 | 1971-08-24 | 1972-02-23 | $7700.00 | Window Closed / Lapsed |