Patent US3072602A successfully refreshed from Google Patents.
US3072602A
Expired / Lapsed
US
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Thermoplastic compositions having improved light stability
Assignee: Dow Chemical Co
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Filing: 1959-07-02
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Granted: 1963-01-08
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Expires: 1979-07-02
Abstract
No abstract record available.
Inventors
- 👤 Gerald A Clark
- 👤 Carl B Havens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:46
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/10; C08K5/101; C08K5/105; C08K5/107
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
A LIGHT STABLE COMPOSITION OF MATTER CONSISTING ESSENTIALLY OF AN ORGANIC THERMOPLASTIC SYNTHETIC POLYMERIC MATERIAL NORMALLY SUBJECT TO DISCOLORATION ON EXPOSURE TO LIGHT AND FROM 0.1 TO 10 PERCENT OF THE WEIGHT OF SAID RESINOUS ORGANIC MATERIAL OF A MONOESTER OF 4-BENZOYL RESORCINOL AS A STABILIZER HAVING THE GENERAL FORMULA:
Claim 2
Dependent Claim
50 words
A LIGHT STABLE COMPOSITION OF MATTER CONSISTING ESSENTIALLY OF AN ORGANIC THERMOPLASTIC SYNTHETIC POLYMERIC MATERIAL NORMALLY SUBJECT TO DISCOLORATION ON EXPOSURE TO LIGHT AND FROM 0.1 TO 10 PERCENT OF THE WEIGHT OF SAID RESINOUS ORGANIC MATERIAL OF A MONOESTER OF 4-BENZOYL RESORCINOL AS A STABILIZER 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) | 1966-01-07 | 1966-07-09 | 1967-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-07 | 1970-07-09 | 1971-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-07 | 1974-07-09 | 1975-01-08 | $7700.00 | Window Closed / Lapsed |