Patent US3337495A successfully refreshed from Google Patents.
US3337495A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized polyolefins
Assignee: Dow Chemical Co
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Filing: 1963-11-18
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Granted: 1967-08-22
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Expires: 1983-11-18
Abstract
No abstract record available.
Inventors
- 👤 John M Corbett
- 👤 David A Gordon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:46
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/05; C08K5/053; C08L; C08L23/00; C08L23/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
A PHENOLIC STABILIZED COMPOSITION OF A SOLID POLYMER OF A MONO-1-OLEFIN HAVING NOT MORE THAN EIGHT CARBON ATOMS CONTAINING A STABLIZING AMOUNT OF A PHENOLIC ANTIOXIDANT HAVING AT LEAST ONE HYDROXY GROUP LINKED DIRECTLY TO THE AROMATIC NUCLEUS OF AN AROMATIC HYDROCARBON AS THE ONLY SUBSTITUENT OF SUCH HYDROCARBON, WHICH COMPOSTION IS PREDISPOSED TO DISCOLOR UPON EXPOSURE TO OXIDATIVE CONDITIONS, AND, AS AN AGENT IMPROVING THE RESISTANCE OF THE PHENOLIC-STABILIZED COMPOSITION TO COLOR DETERIORATION, FROM ABOUT 0.01% TO ABOUT 1% BY WEIGHT BASED ON THE COMPOSITION OF A POLYPENTAERYTHRITOL HAVING THE FORMULA:
Claim 2
Dependent Claim
92 words
A PHENOLIC STABILIZED COMPOSITION OF A SOLID POLYMER OF A MONO-1-OLEFIN HAVING NOT MORE THAN EIGHT CARBON ATOMS CONTAINING A STABLIZING AMOUNT OF A PHENOLIC ANTIOXIDANT HAVING AT LEAST ONE HYDROXY GROUP LINKED DIRECTLY TO THE AROMATIC NUCLEUS OF AN AROMATIC HYDROCARBON AS THE ONLY SUBSTITUENT OF SUCH HYDROCARBON, WHICH COMPOSTION IS PREDISPOSED TO DISCOLOR UPON EXPOSURE TO OXIDATIVE CONDITIONS, AND, AS AN AGENT IMPROVING THE RESISTANCE OF THE PHENOLIC-STABILIZED COMPOSITION TO COLOR DETERIORATION, FROM ABOUT 0.01% TO ABOUT 1% BY WEIGHT BASED ON THE COMPOSITION OF A POLYPENTAERYTHRITOL HAVING THE 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) | 1970-08-21 | 1971-02-20 | 1971-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-21 | 1975-02-20 | 1975-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-21 | 1979-02-20 | 1979-08-22 | $7700.00 | Window Closed / Lapsed |