Patent US2643973A successfully refreshed from Google Patents.
US2643973A
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Nonsticking wax article and method of preparation
Assignee: Sunoco Inc
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Filing: 1950-10-13
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Granted: 1953-06-30
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Expires: 1970-10-13
Abstract
No abstract record available.
Inventors
- 👤 Thompson Norman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:22
CPC Classifications
C; C10; C10G; C10G73/00; C10G73/40; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31801; Y10T428/31844
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
34 words
AN ARTICLE OF MANUFACTURE COMPRISING A BODY OF PETROLEUM WAX CARRYING A SURFACE FILM, IN AMOUNT EFFECTIVE TO PREVENT STICKING, OF HYDROCARBON DISTILLATE OIL HAVING A VISCOSITY OF 40-7000 S. U. SECONDS AT 100*F.
Claim 2
Dependent Claim
34 words
AN ARTICLE OF MANUFACTURE COMPRISING A BODY OF PETROLEUM WAX CARRYING A SURFACE FILM, IN AMOUNT EFFECTIVE TO PREVENT STICKING, OF HYDROCARBON DISTILLATE OIL HAVING A VISCOSITY OF 40-7000 S. U. SECONDS AT 100*F.
References Cited (Backward Citations)
US1720229A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-29 | 1956-12-29 | 1957-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-29 | 1960-12-29 | 1961-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-29 | 1964-12-29 | 1965-06-30 | $7700.00 | Window Closed / Lapsed |