US3594318A
Expired / Lapsed
US
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Antioxidant compositions
Assignee: Ethyl Corp
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Filing: 1969-05-12
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Granted: 1971-07-20
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Expires: 1989-05-12
Abstract
Abstract ORGANIC MATERIAL IS SYNERGISTICALLY STABILIZED BY ADDITION OF BOTH AN A-ALKOXY DIHYDROCARBYL CRESOL AND A DIALKYL TIN SULFIDE SYNERGIST. FOR EXAMPLE, LUBRICATING OIL CONTAINING A-ALKOXY-2,6-DI-TERT-BUTYL-P-CRESOL AND DIBUTYL TIN SULFIDE IS EXCEPTIONALLY STABLE.
Inventors
- 👤 James D O'neill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:56
CPC Classifications
C; C07; C07C; C07C43/00; C07C43/02; C07C43/03; C07C43/14; C07C43/178; C07C43/1782; C08; C08K; C08K5/00; C08K5/56; C08K5/57; C08K5/58; C09; C09K; C09K15/00; C09K15/04; C09K15/06; C09K15/08; C10; C10M; C10M1/00; C10M1/08; C10M2207/00; C10M2207/04; C10M2207/046; C10M2227/00; C10M2227/08; C10M2227/083; C10N; C10N2040/00; C10N2040/08
Claims Analysis
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References Cited (Backward Citations)
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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) | 1974-07-19 | 1975-01-18 | 1975-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-19 | 1979-01-18 | 1979-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-19 | 1983-01-18 | 1983-07-20 | $7700.00 | Window Closed / Lapsed |