Patent US5077498A successfully refreshed from Google Patents.
Patent US2850452A successfully refreshed from Google Patents.
US2850452A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricant
Assignee: Monsanto Chemicals Ltd
•
Filing: 1955-02-15
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Granted: 1958-09-02
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Expires: 1975-02-15
Abstract
No abstract record available.
Inventors
- 👤 Thoburn P Sands
- 👤 James B Davis
- 👤 Elijah P Cunningham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:35
CPC Classifications
C; C10; C10M; C10M141/00; C10M141/10; C10M2219/00; C10M2219/06; C10M2219/062; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/045; C10N; C10N2010/00; C10N2010/02; C10N2010/04; C10N2010/06; C10N2010/08; C10N2010/10; C10N2010/14; C10N2010/16; C10N2040/00; C10N2040/04; C10N2040/042; C10N2040/044; C10N2040/046
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
AN EXTREME-PRESSURE LUBRICATING COMPOSITION COMPRISING A MAJOR PROPORTION OF A MINERAL LUBRICATING OIL AND, BASED UPON SAID OIL, (A) FROM ABOUT 2% TO ABOUT 15% BY WEIGHT OF AN OIL-SOLUBLE PRODUCT OBTAINED BY CHEMICALLY SUBSTITUTING A PART ONLY OF THE CHLORINE IN A CHLORINATED ALIPHATIC HYDROCARBON MATERIAL HAVING FROM 2 TO ABOUT 24 CARBON ATOMS WITH AN ALKYL THIOCARBONATE GROUP, AND (B) FROM ABOUT 1% TO ABOUT 5% BY WEIGHT OF AN OIL-SOLUBLE POLYVALENT METAL SALT OF THIOPHOSPHORIC ACID OF THE STRUCTURE,
Claim 2
Dependent Claim
82 words
AN EXTREME-PRESSURE LUBRICATING COMPOSITION COMPRISING A MAJOR PROPORTION OF A MINERAL LUBRICATING OIL AND, BASED UPON SAID OIL, (A) FROM ABOUT 2% TO ABOUT 15% BY WEIGHT OF AN OIL-SOLUBLE PRODUCT OBTAINED BY CHEMICALLY SUBSTITUTING A PART ONLY OF THE CHLORINE IN A CHLORINATED ALIPHATIC HYDROCARBON MATERIAL HAVING FROM 2 TO ABOUT 24 CARBON ATOMS WITH AN ALKYL THIOCARBONATE GROUP, AND (B) FROM ABOUT 1% TO ABOUT 5% BY WEIGHT OF AN OIL-SOLUBLE POLYVALENT METAL SALT OF THIOPHOSPHORIC ACID OF THE STRUCTURE,
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) | 1961-09-01 | 1962-03-03 | 1962-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-01 | 1966-03-03 | 1966-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-01 | 1970-03-03 | 1970-09-02 | $7700.00 | Window Closed / Lapsed |