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US3785995A
Expired / Lapsed
US
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Antiozonant-antioxidant composition containing secondary amine and hydrous calcium silicate
Assignee: EIDP Inc
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Filing: 1972-03-02
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Granted: 1974-01-15
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Expires: 1992-03-02
Abstract
Abstract AN ANTIOZONANT-ANTIOXIDANT COMPOSITION WHICH IS CRYSTALLINE AND READILY DISPERSIBLE IN ELASTOMERIC POLYMERS COMPRISING A MIXTURE OF, BY WEIGHT, 94-86% SECONDARY AMINE, SAID AMINE CONTAINING 30-65% DIARYL-P-PHENYLENEDIAMINE AND 70-35% N-PHENYL-2-NAPHTHYLAMINE, AND 614% HYDROUS CALCIUM SILICATE AND PROCESS FOR MAKING THE SAME.
Inventors
- 👤 J Kalil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:01
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/34; C08K3/346; C08K5/00; C08K5/16; C08K5/17; C08K5/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-14 | 1977-07-16 | 1978-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-14 | 1981-07-16 | 1982-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-14 | 1985-07-16 | 1986-01-15 | $7700.00 | Window Closed / Lapsed |