US3080340A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Esters of unsaturated fatty acids and 2, 4-dihydroxy benzophenone
Assignee: Dow Chemical Co
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Filing: 1960-01-19
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Granted: 1963-03-05
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Expires: 1980-01-19
Abstract
No abstract record available.
Inventors
- 👤 Carl B Havens
- 👤 Ronald G Brookens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:56
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/13; C08K5/134; C07; C07C; C07C69/00; C07C69/52; C07C69/587
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
45 words
A COMPOSITION COMPRISING AN ORGANIC SYNTHETIC POLYMERIC MATERIAL NORMALLY SUBJECT TO DISCOLORATION ON EXPOSURE TO LIGHT AND FROM 0.5 TO 10 PERCEN OF THE WEIGHT OF SAID POLYMERIC MATERIAL OF A 4-MONO ESTER OF 2,4-DIHYDROXY BENZOPHENONE AND AN UNSATURATED FATTY ACID 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) | 1966-03-04 | 1966-09-03 | 1967-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-04 | 1970-09-03 | 1971-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-04 | 1974-09-03 | 1975-03-05 | $7700.00 | Window Closed / Lapsed |