US2798032A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of destructively distilling oil shale in a producer-type of retort
Assignee: Carbonic Products Inc
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Filing: 1953-02-26
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Granted: 1957-07-02
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Expires: 1973-02-26
Abstract
No abstract record available.
Inventors
- 👤 James W Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:22
CPC Classifications
C; C10; C10G; C10G1/00; C10G1/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
AN IMPROVED METHOD OF DESTRUCTIVELY DISTILLING OIL SHALE AND SIMILAR KEROGAN-CONTAINING NATURAL MATERIALS IN A RETORT TO PRODUCE OIL AND GASES WHICH COMPRISES HEATING SAID MATERIAL TO A TEMPERATURE OF ABOUT 300 TO 500 DEGREES C, IN AN ATMOSPHERE CONTAINING OXYGEN AND MORE THAN 40% CARBON DIOXIDE, SAID CARBON DIOXIDE AND OXYGEN IN SAID ATMOSPHERE BEING IN THE RATIO OF AT LEAST TWO TO ONE.
Claim 2
Dependent Claim
65 words
AN IMPROVED METHOD OF DESTRUCTIVELY DISTILLING OIL SHALE AND SIMILAR KEROGAN-CONTAINING NATURAL MATERIALS IN A RETORT TO PRODUCE OIL AND GASES WHICH COMPRISES HEATING SAID MATERIAL TO A TEMPERATURE OF ABOUT 300 TO 500 DEGREES C, IN AN ATMOSPHERE CONTAINING OXYGEN AND MORE THAN 40% CARBON DIOXIDE, SAID CARBON DIOXIDE AND OXYGEN IN SAID ATMOSPHERE BEING IN THE RATIO OF AT LEAST TWO TO ONE.
References Cited (Backward Citations)
US1509667A
Cited
AU34626A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-01 | 1960-12-31 | 1961-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-01 | 1964-12-31 | 1965-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-01 | 1968-12-31 | 1969-07-02 | $7700.00 | Window Closed / Lapsed |