Patent US2983708A successfully refreshed from Google Patents.
US2983708A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyesters of 3-hydroxy-4(phenylcarbonyl) phenoxyacetic acid and organic plastics stabilized therewith
Assignee: Eastman Kodak Co
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Filing: 1958-07-07
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Granted: 1961-05-09
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Expires: 1978-07-07
Abstract
No abstract record available.
Inventors
- 👤 Gerald R Lappin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:50
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
30 words
A COMPOSITION OF MATTER COMPRISING A NORMALLY SOLID ORGANIC PLASTIC MATERIAL NORMALLY SUSCEPTIBLE TO PHOTODEGRADATION CONTAINING DISPERSED THEREIN AT LEAST .01% BY WEIGHT OF A HYDROXYL-CONTAINING ESTER HAVING THE FORMULA:
Claim 2
Dependent Claim
30 words
A COMPOSITION OF MATTER COMPRISING A NORMALLY SOLID ORGANIC PLASTIC MATERIAL NORMALLY SUSCEPTIBLE TO PHOTODEGRADATION CONTAINING DISPERSED THEREIN AT LEAST .01% BY WEIGHT OF A HYDROXYL-CONTAINING ESTER HAVING THE FORMULA:
References Cited (Backward Citations)
US2811461A
Cited
US2831768A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-08 | 1964-11-07 | 1965-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-08 | 1968-11-07 | 1969-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-08 | 1972-11-07 | 1973-05-09 | $7700.00 | Window Closed / Lapsed |