US2815326A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Additive for mineral oils
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1953-05-01
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Granted: 1957-12-03
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Expires: 1973-05-01
Abstract
No abstract record available.
Inventors
- 👤 Elmer B Cyphers
- 👤 Walter E Waddey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:43
CPC Classifications
C; C10; C10M; C10M135/00; C10M135/02; C10M135/04; C10M2203/00; C10M2203/10; C10M2207/00; C10M2207/02; C10M2207/021; C10M2207/023; C10M2207/027; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/129; C10M2209/00; C10M2209/10; C10M2209/103; C10M2215/00; C10M2215/02; C10M2219/00; C10M2219/04; C10M2219/044; C10M2219/06; C10M2219/062; C10M2219/066; C10M2219/08; C10M2219/082; C10M2219/087; C10M2219/088; C10M2219/089; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/042; C10M2223/045; C10N; C10N2030/00; C10N2030/12; C10N2040/00; C10N2040/02; C10N2040/30; C10N2040/32; C10N2040/34; C10N2040/36; C10N2040/38; C10N2040/40; C10N2040/42; C10N2040/44; C10N2040/50; C10N2050/00; C10N2050/10; C10N2070/00; C10N2070/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
172 words
A MINERAL OIL COMPOSITION CONSISTING ESSENTIALLY OF A MINERAL BASE LUBRICANT CONTAINING IN THE RANGE OF ABOUT 0.05 TO 12% BY WEIGHT, BASED ON TH E TOTAL COMPOSITION, OF A SULFUR CONTAINING REACTION PRODUCT HAVING AN INFRARED ABSORPTION SPECTRA IN THE 11.28 TO 11.4 MINCRON RANGE, OBTAINED BY SULFURINZING A CYCLIC NON-AROMATIC UNSATURATED ORGANIC MATERIAL SELECTED FROM THE CLASS CONSISTING OF TERPENES, SESQUI-TERPENES AND DITERPENES HAVING THE GEN-NERAL FORMULA (C5HG)N, WHERE N IS AN INTEGER OF VALUE 2 TO 4 WITH 20 TO 35% BY WEIGHT OF SULFUR BASED ON THE COMBINED REACTANTS AND DESULFURIZING THE RESULTANT SULFURIZED MATERIAL BY HEATING IT IN THE PRESENCE OF 0.05 TO 5% OF A DESULFURIZATION CATALYST OF RUBBER VULCANIZATION ACCELERATOR TYPE SELECTED FROM THE GROUP CONSISTING OF THIAZOLE DERIVATIVES, ARYL GUANIDINE DERIVATIVES AND DITHIOCARBAMATES, SAID SULFURIZING AND DESULFURIZING STEPS BEING CARRIED OUT AT A REACTION TEMPERATURE BETWEEN 300* AND 425* F. FOR A TOTAL PERIOD OF 1 TO 20 HOURS UNTIL EVOLUTION OF H3S HAS SUBSTANTIALLY CEASED AND THE PRODUCT IS SUBSTANTIALLY NON-CORROSIVE TO COPPER.
Claim 2
Dependent Claim
172 words
A MINERAL OIL COMPOSITION CONSISTING ESSENTIALLY OF A MINERAL BASE LUBRICANT CONTAINING IN THE RANGE OF ABOUT 0.05 TO 12% BY WEIGHT, BASED ON TH E TOTAL COMPOSITION, OF A SULFUR CONTAINING REACTION PRODUCT HAVING AN INFRARED ABSORPTION SPECTRA IN THE 11.28 TO 11.4 MINCRON RANGE, OBTAINED BY SULFURINZING A CYCLIC NON-AROMATIC UNSATURATED ORGANIC MATERIAL SELECTED FROM THE CLASS CONSISTING OF TERPENES, SESQUI-TERPENES AND DITERPENES HAVING THE GEN-NERAL FORMULA (C5HG)N, WHERE N IS AN INTEGER OF VALUE 2 TO 4 WITH 20 TO 35% BY WEIGHT OF SULFUR BASED ON THE COMBINED REACTANTS AND DESULFURIZING THE RESULTANT SULFURIZED MATERIAL BY HEATING IT IN THE PRESENCE OF 0.05 TO 5% OF A DESULFURIZATION CATALYST OF RUBBER VULCANIZATION ACCELERATOR TYPE SELECTED FROM THE GROUP CONSISTING OF THIAZOLE DERIVATIVES, ARYL GUANIDINE DERIVATIVES AND DITHIOCARBAMATES, SAID SULFURIZING AND DESULFURIZING STEPS BEING CARRIED OUT AT A REACTION TEMPERATURE BETWEEN 300* AND 425* F. FOR A TOTAL PERIOD OF 1 TO 20 HOURS UNTIL EVOLUTION OF H3S HAS SUBSTANTIALLY CEASED AND THE PRODUCT IS SUBSTANTIALLY NON-CORROSIVE TO COPPER.
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) | 1960-12-02 | 1961-06-03 | 1961-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-02 | 1965-06-03 | 1965-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-02 | 1969-06-03 | 1969-12-03 | $7700.00 | Window Closed / Lapsed |