Patent US5299190A successfully refreshed from Google Patents.
US2947697A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricant composition
Assignee: Sinclair Refining Co
•
Filing: 1955-10-18
•
Granted: 1960-08-02
•
Expires: 1975-10-18
Abstract
No abstract record available.
Inventors
- 👤 Ernest R Vierk
- 👤 Theodore J Karr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:17
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C10M2203/00; C10M2205/00; C10M2205/02; C10M2205/022; C10M2205/14; C10N; C10N2030/00; C10N2030/12; C10N2060/00; C10N2060/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
A PROTECTIVE LUBRICANT CONSISTING ESSENTIALLY OF ABOUT 2 TO 10 PERCENT BY WEIGHT OF A NORMALLY SOLID POLYETHYLENE HAVING A MOLECULAR WEIGHT OF ABOUT 1000 TO 23,000, ABOUT 55 TO 75 PERCENT BY WEIGHT OF BLOWN ASPHALT, SAID BLOWN ASPHALT HAVING A SOFTENING POINT OF ABOUT 200 TO 225*F. AND HAVING A PENETRATION AT 77*F (100 GRAM NEELDE) OF LESS THAN ABOUT 15, AND MINERAL LUBRICATING OIL FRACTION SUFFICIENT TO CHARACTERIZE THE LUBRICANT WITH A VISCOSITY OF ABOUT 150 TO 300 FUROL SECONDS AT 250*F.
Claim 2
Dependent Claim
85 words
A PROTECTIVE LUBRICANT CONSISTING ESSENTIALLY OF ABOUT 2 TO 10 PERCENT BY WEIGHT OF A NORMALLY SOLID POLYETHYLENE HAVING A MOLECULAR WEIGHT OF ABOUT 1000 TO 23,000, ABOUT 55 TO 75 PERCENT BY WEIGHT OF BLOWN ASPHALT, SAID BLOWN ASPHALT HAVING A SOFTENING POINT OF ABOUT 200 TO 225*F. AND HAVING A PENETRATION AT 77*F (100 GRAM NEELDE) OF LESS THAN ABOUT 15, AND MINERAL LUBRICATING OIL FRACTION SUFFICIENT TO CHARACTERIZE THE LUBRICANT WITH A VISCOSITY OF ABOUT 150 TO 300 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) | 1963-08-02 | 1964-02-01 | 1964-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-02 | 1968-02-01 | 1968-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-02 | 1972-02-01 | 1972-08-02 | $7700.00 | Window Closed / Lapsed |