US3370036A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilization of polymers with uv stabilizers and antioxidants
Assignee: Phillips Petroleum Co
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Filing: 1962-07-02
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Granted: 1968-02-20
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Expires: 1982-07-02
Abstract
No abstract record available.
Inventors
- 👤 Robert J Martinovich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 16:41
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/13; C08K5/134; C08K5/1345; C08K5/36; C08K5/37; C08K5/375
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
A SOLID POLYMER OF AN ALIPHATIC 1-MONO-OLEFIN, HAVING A MAXIMUM OF 8 CARBON ATOMS AND NO BRANCHING NEARER THE DOUBLE BOND THAN THE 4-POSITION STABILIZED WITH A STABILIZER COMBINATION CONSISTING ESSENTIALLY OF 4,4''-THIOBIS-(3-METHYL-6-T-BUTYL PHENOL) AND PARA-TERTIARY-BUTYL PHENYL SALICYLATE, THE FORMER ADDITIVE BEING PRESENT IN AN AMOUNT IN THE RANGE OF 0.05 TO 0.1 PERCENT BY WEIGHT, AND THE LATTER ADDITIVE BEING PRESENT IN AN AMOUNT 0.25 TO 0.5 PERCENT BY WEIGHT, OF THE POLYMER STABILIZED THEREWITH.
Claim 2
Dependent Claim
76 words
A SOLID POLYMER OF AN ALIPHATIC 1-MONO-OLEFIN, HAVING A MAXIMUM OF 8 CARBON ATOMS AND NO BRANCHING NEARER THE DOUBLE BOND THAN THE 4-POSITION STABILIZED WITH A STABILIZER COMBINATION CONSISTING ESSENTIALLY OF 4,4''-THIOBIS-(3-METHYL-6-T-BUTYL PHENOL) AND PARA-TERTIARY-BUTYL PHENYL SALICYLATE, THE FORMER ADDITIVE BEING PRESENT IN AN AMOUNT IN THE RANGE OF 0.05 TO 0.1 PERCENT BY WEIGHT, AND THE LATTER ADDITIVE BEING PRESENT IN AN AMOUNT 0.25 TO 0.5 PERCENT BY WEIGHT, OF THE POLYMER STABILIZED THEREWITH.
References Cited (Backward Citations)
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Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-02-19 | 1971-08-21 | 1972-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-19 | 1975-08-21 | 1976-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-19 | 1979-08-21 | 1980-02-20 | $7700.00 | Window Closed / Lapsed |