US3842009A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Molybdenum disulfide containing lubricant
Assignee: Cyprus Amax Minerals Co
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Filing: 1970-10-19
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Granted: 1974-10-15
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Expires: 1990-10-19
Abstract
Abstract 1. A LUBRICANT COMPOSITION CONSISTING ESSENTIALLY OF A BASE OIL CONTAINING FROM ABOUT 0.25% TO ABOUT 30% MOLYBDENUM DISULFIDE PARTICLES LESS THAN ABOUT 3 MICRONS IN SIZE SUSPENDED THEREIN AND A DISPERSANT PRESENT IN AN AMOUNT OF FROM ABOUT 0.2 TO ABOUT 0.8 PARTS DISPERSANT PER PART MOLYBDENUM DISULFIDE PRESENT, SAID DISPERSANT CONSISTING OF A COPOLYMER OF A METHACRYLATE ESTER AND N-VINYL PYRROLIDONE F AN AVERAGE MOLECULAR WEIGHT OF ABOUT 350,000 TO ABOUT 600,000 CORRESPONDING TO THE FORMULA: -(CH(-N<(-CH2-CH2-CH2-CO))-CH2)M-(CH2-C(-CH3)(-COO-R''))N- WHEREIN R7=AN ALKYL RADICAL OF C1 TO C22; AND RATIO OF M:N=1:5 TO 1:15.
Inventors
- 👤 H Barry
- 👤 C Hallada
- 👤 F Moore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:02
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C10M2201/00; C10M2201/06; C10M2201/065; C10M2201/066; C10M2217/00; C10M2217/02; C10M2217/028; C10M2217/06; C10N; C10N2070/00; C10N2070/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
A LUBRICANT COMPOSITION CONSISTING ESSENTIALLY OF A BASE OIL CONTAINING FROM ABOUT 0.25% TO ABOUT 30% MOLYBDENUM DISULFIDE PARTICLES LESS THAN ABOUT 3 MICRONS IN SIZE SUSPENDED THEREIN AND A DISPERSANT PRESENT IN AN AMOUNT OF FROM ABOUT 0.2 TO ABOUT 0.8 PARTS DISPERSANT PER PART MOLYBDENUM DISULFIDE PRESENT, SAID DISPERSANT CONSISTING OF A COPOLYMER OF A METHACRYLATE ESTER AND N-VINYL PYRROLIDONE F AN AVERAGE MOLECULAR WEIGHT OF ABOUT 350,000 TO ABOUT 600,000 CORRESPONDING TO THE FORMULA:
Claim 2
Dependent Claim
77 words
A LUBRICANT COMPOSITION CONSISTING ESSENTIALLY OF A BASE OIL CONTAINING FROM ABOUT 0.25% TO ABOUT 30% MOLYBDENUM DISULFIDE PARTICLES LESS THAN ABOUT 3 MICRONS IN SIZE SUSPENDED THEREIN AND A DISPERSANT PRESENT IN AN AMOUNT OF FROM ABOUT 0.2 TO ABOUT 0.8 PARTS DISPERSANT PER PART MOLYBDENUM DISULFIDE PRESENT, SAID DISPERSANT CONSISTING OF A COPOLYMER OF A METHACRYLATE ESTER AND N-VINYL PYRROLIDONE F AN AVERAGE MOLECULAR WEIGHT OF ABOUT 350,000 TO ABOUT 600,000 CORRESPONDING TO THE FORMULA:
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) | 1977-10-14 | 1978-04-15 | 1978-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-14 | 1982-04-15 | 1982-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-14 | 1986-04-15 | 1986-10-15 | $7700.00 | Window Closed / Lapsed |