US3334043A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Neopentane separation of bituminous materials
Assignee: Sunoco Inc
•
Filing: 1965-09-29
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Granted: 1967-08-01
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Expires: 1985-09-29
Abstract
No abstract record available.
Inventors
- 👤 Lucretia G Ferris
- 👤 Ernest P Black
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:30
CPC Classifications
C; C10; C10C; C10C3/00; C10C3/08; C10G; C10G1/00; C10G1/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
46 words
PROCESS FOR RECOVERING OIL FROM AN OIL-BEARING BITUMINOUS MATERIAL CONTAINING BITUMINOUS RESINS AND OIL WHICH COMPRISES INTIMATELY CONTACTING SAID BITUMINOUS MATERIAL WITH LIQUID NEOPENTANE AT A TEMPERATURE WITHIN THE RANGE OF 0 TO 250*F., SEPARATING THE RESULTING MIXTURE INTO A FIRST FRACTION COMPRISING BITUMINOUS OIL DIS-
Claim 2
Dependent Claim
46 words
PROCESS FOR RECOVERING OIL FROM AN OIL-BEARING BITUMINOUS MATERIAL CONTAINING BITUMINOUS RESINS AND OIL WHICH COMPRISES INTIMATELY CONTACTING SAID BITUMINOUS MATERIAL WITH LIQUID NEOPENTANE AT A TEMPERATURE WITHIN THE RANGE OF 0 TO 250*F., SEPARATING THE RESULTING MIXTURE INTO A FIRST FRACTION COMPRISING BITUMINOUS OIL DIS-
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) | 1970-07-31 | 1971-01-30 | 1971-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-31 | 1975-01-30 | 1975-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-31 | 1979-01-30 | 1979-08-01 | $7700.00 | Window Closed / Lapsed |