US2937157A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Haloethylene polymers containing allyl ethers of 2-hydroxy benzophenones
Assignee: Dow Chemical Co
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Filing: 1956-11-07
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Granted: 1960-05-17
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Expires: 1976-11-07
Abstract
No abstract record available.
Inventors
- 👤 Gerald A Clark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:53
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/13; C08K5/132
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
33 words
A LIGHT STABLE THERMOPLASTIC COMPOSITION COMPRISING A HALOETHYLENE POLYMER AND FROM 0.5 TO 6 PERCENT OF THE WEIGHT OF SAID POLYMER OF AN ALLYL ETHER OF A 2-HYDROXYBENZOPHENONE DERIVATIVE HAVING THE GENERAL FORMULA:
Claim 2
Dependent Claim
33 words
A LIGHT STABLE THERMOPLASTIC COMPOSITION COMPRISING A HALOETHYLENE POLYMER AND FROM 0.5 TO 6 PERCENT OF THE WEIGHT OF SAID POLYMER OF AN ALLYL ETHER OF A 2-HYDROXYBENZOPHENONE DERIVATIVE HAVING 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) | 1963-05-17 | 1963-11-16 | 1964-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-17 | 1967-11-16 | 1968-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-17 | 1971-11-16 | 1972-05-17 | $7700.00 | Window Closed / Lapsed |