US2716085A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adhesive petroleum lubricant
Assignee: Pure Oil Co
•
Filing: 1951-09-27
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Granted: 1955-08-23
•
Expires: 1971-09-27
Abstract
No abstract record available.
Inventors
- 👤 George W Ayers
- 👤 William A Krewer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:56
CPC Classifications
C; C10; C10M; C10M5/00; D; D07; D07B; D07B1/00; D07B1/14; D07B1/141; D07B1/144; C10M2203/00; C10M2203/10; C10M2203/108; C10M2207/00; C10M2207/10; C10M2207/20; C10N; C10N2050/00; C10N2050/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
A LUBRICATING COMPOSITION CHARACTERIZED BY ITS ADHESIVENESS TO METAL SURFACES, COMPRISING A MAJOR PORTION OF A RESIDUUM FROM THE DISTILLATION OF A PETROLEUM OIL AND A SMALL AMOUNT OF UNCTUOUS, STRINGY, NON-CRYSTALLINE WAX TAILINGS HAVING AN ASPHALTENE CONTENT OF NOT ABOVE 4 PER CENT BY WEIGHT AND A PETROLEUM RESIN CONTENT OF AT LEAST ABOUT 30 PER CENT BY WEIGHT, A WAX CONTENT OF UNDER 2 PER CENT WEIGHT, AND A SULFUR CONTENT OF ABOUT 2.4 PER CENT BY WEIGHT.
Claim 2
Dependent Claim
80 words
A LUBRICATING COMPOSITION CHARACTERIZED BY ITS ADHESIVENESS TO METAL SURFACES, COMPRISING A MAJOR PORTION OF A RESIDUUM FROM THE DISTILLATION OF A PETROLEUM OIL AND A SMALL AMOUNT OF UNCTUOUS, STRINGY, NON-CRYSTALLINE WAX TAILINGS HAVING AN ASPHALTENE CONTENT OF NOT ABOVE 4 PER CENT BY WEIGHT AND A PETROLEUM RESIN CONTENT OF AT LEAST ABOUT 30 PER CENT BY WEIGHT, A WAX CONTENT OF UNDER 2 PER CENT WEIGHT, AND A SULFUR CONTENT OF ABOUT 2.4 PER CENT BY WEIGHT.
References Cited (Backward Citations)
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Cited
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Cited
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Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-08-22 | 1959-02-21 | 1959-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-08-22 | 1963-02-21 | 1963-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-08-22 | 1967-02-21 | 1967-08-23 | $7700.00 | Window Closed / Lapsed |