Patent US4334281A successfully refreshed from Google Patents.
US2855366A
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US
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Sulfurized additives for lubricants
Assignee: Pure Oil Co
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Filing: 1953-08-31
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Granted: 1958-10-07
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Expires: 1973-08-31
Abstract
No abstract record available.
Inventors
- 👤 Manteuffel Allan
- 👤 William D Gilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:55
CPC Classifications
C; C07; C07G; C07G99/00; C07G99/002; C10; C10M; C10M135/00; C10M135/02; C10M2219/00; C10M2219/02; C10M2219/024; C10M2223/00; C10M2223/12; C10N; C10N2040/00; C10N2040/02; C10N2040/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
148 words
IN THE MANUFACTURE OF A SULFUR-CONTAINING SPERM OIL COMPOSITION FOR USE AS AN ANTI-SQUAWK ADDITIVE IN A MINERAL OIL AUTOMATIC TRANSMISSION FLUID, SAID ADDITIVE PREPARED BY THE REACTION BETWEEN SPERM OIL AND A SULFURIZING AGENT SELECTED FROM THE GROUP CONSISTING OF ELEMENTAL SULFUR AND SULFUR CHLORIDE, THE IMPROVEMENT WHICH COMPRISES CARRYING OUT THE REACTION FOR NOT LESS THAN ABOUT EIGHT HOURS AT A TEMPERATURE OF 340*-370*F. BY EMPLOYING A REACTION MIXTURE CONSISTING OF SPERM OIL, AN ADDED AMOUNT OF ABOUT 4-8 PARTS BY WEIGHT OF OLEIC ACID PER 100 PARTS BY WEIGHT OF SAID SPERM OIL, AND A SULFURIZING AGENT IN A QUANTITY NOT IN EXCESS OF ABOUT 10% BY WEIGHT, BASED ON SAID REACTION MIXTURE, BUT SUFFICIENT TO CHEMICALLY INCORPORATE 8.5-10% BY WEIGHT OF SULFUR IN THE PRODUCT OF SAID REACTION, SAID ADDITIVE HAVING A VISCOSITY NOT IN EXCESS OF ABOUT 180 S. U. S. @ 210*F.
Claim 2
Dependent Claim
148 words
IN THE MANUFACTURE OF A SULFUR-CONTAINING SPERM OIL COMPOSITION FOR USE AS AN ANTI-SQUAWK ADDITIVE IN A MINERAL OIL AUTOMATIC TRANSMISSION FLUID, SAID ADDITIVE PREPARED BY THE REACTION BETWEEN SPERM OIL AND A SULFURIZING AGENT SELECTED FROM THE GROUP CONSISTING OF ELEMENTAL SULFUR AND SULFUR CHLORIDE, THE IMPROVEMENT WHICH COMPRISES CARRYING OUT THE REACTION FOR NOT LESS THAN ABOUT EIGHT HOURS AT A TEMPERATURE OF 340*-370*F. BY EMPLOYING A REACTION MIXTURE CONSISTING OF SPERM OIL, AN ADDED AMOUNT OF ABOUT 4-8 PARTS BY WEIGHT OF OLEIC ACID PER 100 PARTS BY WEIGHT OF SAID SPERM OIL, AND A SULFURIZING AGENT IN A QUANTITY NOT IN EXCESS OF ABOUT 10% BY WEIGHT, BASED ON SAID REACTION MIXTURE, BUT SUFFICIENT TO CHEMICALLY INCORPORATE 8.5-10% BY WEIGHT OF SULFUR IN THE PRODUCT OF SAID REACTION, SAID ADDITIVE HAVING A VISCOSITY NOT IN EXCESS OF ABOUT 180 S. U. S. @ 210*F.
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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) | 1961-10-06 | 1962-04-07 | 1962-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-06 | 1966-04-07 | 1966-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-06 | 1970-04-07 | 1970-10-07 | $7700.00 | Window Closed / Lapsed |