US2729690A
Expired / Lapsed
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Synergistic stabilizing compositions
Assignee: Ethyl Corp
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Filing: 1951-10-26
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Granted: 1956-01-03
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Expires: 1971-10-26
Abstract
No abstract record available.
Inventors
- 👤 Oldenburg Edgar Bradley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 01:10
CPC Classifications
C; C11; C11B; C11B5/00; C11B5/0042; C11B5/005; C08; C08K; C08K5/00; C08K5/16; C08K5/22; C08K5/24; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10M; C10M1/00; C10M1/08; C10L1/222; C10L1/2222; C10L1/226; C10M2207/00; C10M2207/40; C10M2207/404; C10M2215/00; C10M2215/02; C10M2215/06; C10M2215/062; C10M2215/064; C10M2215/065; C10M2215/066; C10M2215/18; C10M2215/22; C10M2215/221; C10M2215/225; C10M2215/226; C10M2215/24; C10M2215/30; Y; Y10; Y10S; Y10S524/00; Y10S524/925
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
52 words
A COMPOSITION COMPRISING RUBBER STABILIZED BY THE PRESENCE OF BETWEEN ABOUT 0.1 AND 2.0 PARTS PER 100 PARTS OF RUBBER OF A SYNERGISTIC ANTIOXIDANT COMPOSITION CONSISTING ESSENTIALLY OF AN ARYLAMINE ANTIOXIDANT, AND A HYDRAZINE, SAID HYDRAZINE BEING PRESENT IN AMOUNT BETWEEN ABOUT 30 AND 100 PARTS PER 100 PARTS OF SAID ARYLAMINE.
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) | 1959-01-02 | 1959-07-04 | 1960-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-02 | 1963-07-04 | 1964-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-02 | 1967-07-04 | 1968-01-03 | $7700.00 | Window Closed / Lapsed |