US2676910A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing and refining asphalt
Assignee: Standard Oil Development Co
•
Filing: 1951-05-26
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Granted: 1954-04-27
•
Expires: 1971-05-26
Abstract
No abstract record available.
Inventors
- 👤 Murray H Edson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:17
CPC Classifications
C; C10; C10C; C10C3/00; C10C3/02; C10C3/023
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
25 words
A PROCESS FOR TREATING RESIDUALS OILS COMPRISING ADDING ABOUT 0.1 TO 5% BY WEIGHT OF P205 TO SAID RESIDUAL OIL AND AGITATING SAID MIXTURE IN
Claim 2
Dependent Claim
25 words
A PROCESS FOR TREATING RESIDUALS OILS COMPRISING ADDING ABOUT 0.1 TO 5% BY WEIGHT OF P205 TO SAID RESIDUAL OIL AND AGITATING SAID MIXTURE IN
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) | 1957-04-26 | 1957-10-26 | 1958-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-26 | 1961-10-26 | 1962-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-26 | 1965-10-26 | 1966-04-27 | $7700.00 | Window Closed / Lapsed |