USRE27331E
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sulfurized diels-alder adducts and lubricants containing the same
Assignee: —
•
Filing: 1970-11-16
•
Granted: 1972-04-11
•
Expires: 1990-11-16
Abstract
Abstract SULFUR-CONTAINNG COMPOSITION CHARACTERIZED BY THE PRESENCE OF AT LEAST ONE CYLOALIPHATIC GROUP WIHT AT LEAST TWO NUCLEAR CARBON ATOMS OF ONE CYCLOALIPHATIC GROUP OR TWO NUCLEAR CARBON ATOMS OF DIFFERENT CYCLOALIPHATIC GROUPS JOINED THROUGH A DIVALENT SULFUR LINKAGE, THE SULFUR LINKAGE CONTAINS AT LEAST TWO SULFUR ATOMS. SULFURIZED DIELS-ALDERS ADDUCTS ARE ILLUSTRATIVE OF THE COMPOSITIONS DISCLOSED. THESE SULFUR-CONTAINING COMPOSITIONS ARE PARTICULARLY USEFUL AS EXTREME PRESSURE AND ANTIWEAR ADDITIVES IN VARIOUS LUBRICATING OILS.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:58
CPC Classifications
C; C07; C07D; C07D207/00; C07D207/02; C07D207/18; C07D207/22; C07D207/24; C07D207/26; C07D207/263; C07D207/267; C07B; C07B45/00; C07C; C07C323/00; C10; C10M; C10M135/00; C10M135/02; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/024; C10M2207/026; C10M2207/10; C10M2207/12; C10M2207/121; C10M2207/122; C10M2207/125; C10M2207/129; C10M2211/00; C10M2211/08; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/08; C10M2215/082; C10M2215/086; C10M2215/12; C10M2215/24; C10M2215/26; C10M2215/28; C10M2217/00; C10M2217/04; C10M2217/046; C10M2217/06; C10M2219/00; C10M2219/02; C10M2219/022; C10M2219/04; C10M2219/044; C10M2219/046; C10M2219/06; C10M2219/062; C10M2219/066; C10M2219/068; C10M2219/08; C10M2219/082; C10M2219/083; C10M2219/10; C10M2219/102; C10M2219/104; C10M2219/106; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/041; C10M2223/042; C10M2223/045; C10M2223/047; C10M2223/12; C10M2225/00; C10M2225/04; C10M2225/041; C10M2229/00; C10M2229/04; C10M2229/041; C10N; C10N2010/00; C10N2010/02; C10N2010/04; C10N2010/08; C10N2040/00; C10N2040/20; C10N2040/22
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) | 1975-04-11 | 1975-10-11 | 1976-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-11 | 1979-10-11 | 1980-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-11 | 1983-10-11 | 1984-04-11 | $7700.00 | Window Closed / Lapsed |