US2785111A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protective lubricant composition
Assignee: Sinclair Refining Co
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Filing: 1954-06-21
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Granted: 1957-03-12
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Expires: 1974-06-21
Abstract
No abstract record available.
Inventors
- 👤 Ernest R Vierk
- 👤 Theodore J Karr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 01:38
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; D; D07; D07B; D07B1/00; D07B1/14; D07B1/141; D07B1/144; C10M2203/00; C10M2203/10; C10M2205/00; C10M2205/14; C10M2205/16; C10M2205/17; C10N; C10N2030/00; C10N2030/12; C10N2040/00; C10N2040/30; C10N2040/32; C10N2040/34; C10N2040/36; C10N2040/38; C10N2040/40; C10N2040/42; C10N2040/44; C10N2040/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
A PROTECTIVE LUBRICANT CONTAINING ABOUT 5 TO 20 PERCENT BY WEIGHT OF MICROCRYSTALLINE WAX MELTING IN THE RANGE FROM ABOUT 140 TO 165*F., ABOUT 50 TO 70 PERCENT BY WEIGHT OF BLOWN ASPHALT, SAID BLOWN ASPHALT BEING OBTAINED BY AIR BLOWING ASPHALT HAVING A VISCOSITY OF ABOUT 900 TO 1100 FUROL SECONDS AT 210*F. UNTIL THE SOFTENING POINT IS ABOUT 200 TO 220*F., AND A MINERAL LUBRICATING OIL SUFFICIENT TO CHARACTERIZE THE LUBRICANT WITH A VISCOSITY OF ABOUT 140 TO 200 FUROL SECONDS AT 250*F.
Claim 2
Dependent Claim
85 words
A PROTECTIVE LUBRICANT CONTAINING ABOUT 5 TO 20 PERCENT BY WEIGHT OF MICROCRYSTALLINE WAX MELTING IN THE RANGE FROM ABOUT 140 TO 165*F., ABOUT 50 TO 70 PERCENT BY WEIGHT OF BLOWN ASPHALT, SAID BLOWN ASPHALT BEING OBTAINED BY AIR BLOWING ASPHALT HAVING A VISCOSITY OF ABOUT 900 TO 1100 FUROL SECONDS AT 210*F. UNTIL THE SOFTENING POINT IS ABOUT 200 TO 220*F., AND A MINERAL LUBRICATING OIL SUFFICIENT TO CHARACTERIZE THE LUBRICANT WITH A VISCOSITY OF ABOUT 140 TO 200 FUROL SECONDS AT 250*F.
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) | 1960-03-11 | 1960-09-10 | 1961-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-03-11 | 1964-09-10 | 1965-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-03-11 | 1968-09-10 | 1969-03-12 | $7700.00 | Window Closed / Lapsed |