Patent US3600372A successfully refreshed from Google Patents.
US3600372A
Expired / Lapsed
US
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Carbon disulfide treated mannich condensation products
Assignee: Standard Oil Co
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Filing: 1968-06-04
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Granted: 1971-08-17
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Expires: 1988-06-04
Abstract
Abstract AN ASHLESS DISPERSION FOR LUBRICANT WHICH IS MADE BY REACTING CARBON DISULFIDE OR CARBON DISULFIDE AND AN ALKALI METAL HYDROXIDE WITH A MANNICH CONDENSATION PRODUCT.
Inventors
- 👤 John H Udelhofen
- 👤 Roger W Watson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 00:54
CPC Classifications
C; C10; C10M; C10M159/00; C10M159/12; C10M159/16; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/06; C10M2215/062; C10M2215/24; C10M2215/26; C10M2217/00; C10M2217/04; C10M2217/046; C10M2217/06
Claims Analysis
Total Claims: 0
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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) | 1974-08-16 | 1975-02-15 | 1975-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-16 | 1979-02-15 | 1979-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-16 | 1983-02-15 | 1983-08-17 | $7700.00 | Window Closed / Lapsed |