Patent US3216969A successfully refreshed from Google Patents.
US3216969A
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Polymers stabilized with o-hydroxybenzalaminodiphenylamines or metal coordination complexes thereof
Assignee: Universal Oil Products Co
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Filing: 1961-10-27
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Granted: 1965-11-09
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Expires: 1981-10-27
Abstract
No abstract record available.
Inventors
- 👤 Henryk A Cyba
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:19
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/0091; C08K5/59; Y; Y10; Y10S; Y10S524/00; Y10S524/925
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
A SOLID POLYMER NORMALLY SUBJECT TO DETERIORATION BY OXYGEN AND ULTRAVIOLET LIGHT CONTAINING A STABILIZING CONCENTRATION OF AN INHIBITOR SELECTED FROM THE GROUP CONSISTING OF O-HYDROXYBENZAL-P-AMINODIPHENYLAMINE AND A METAL COORDINATION COMPLEX THEREOF IN WHICH THE METAL IS SELECTED FROM THE GROUP CONSISTING OF NICKEL, COPPER, COBALT, ANTIMONY, CADMIUM, LEAD, TIN, URANIUM, VANADIUM AND ZINC.
Claim 2
Dependent Claim
54 words
A SOLID POLYMER NORMALLY SUBJECT TO DETERIORATION BY OXYGEN AND ULTRAVIOLET LIGHT CONTAINING A STABILIZING CONCENTRATION OF AN INHIBITOR SELECTED FROM THE GROUP CONSISTING OF O-HYDROXYBENZAL-P-AMINODIPHENYLAMINE AND A METAL COORDINATION COMPLEX THEREOF IN WHICH THE METAL IS SELECTED FROM THE GROUP CONSISTING OF NICKEL, COPPER, COBALT, ANTIMONY, CADMIUM, LEAD, TIN, URANIUM, VANADIUM AND ZINC.
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) | 1968-11-08 | 1969-05-10 | 1969-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-08 | 1973-05-10 | 1973-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-08 | 1977-05-10 | 1977-11-09 | $7700.00 | Window Closed / Lapsed |