US2697688A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Distillation of oil-bearing minerals
Assignee: Standard Oil Development Co
•
Filing: 1949-11-30
•
Granted: 1954-12-21
•
Expires: 1969-11-30
Abstract
No abstract record available.
Inventors
- 👤 Lloyd A Nicolai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:33
CPC Classifications
C; C10; C10G; C10G1/00; C10G1/02; Y; Y10; Y10S; Y10S165/00; Y10S165/92
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
THE PROCESS OF DISTILLING SUBDIVIDED OIL-BEARING SHALE AND THE LIKE WHICH COMPRISES FLUIDIZING SAID SHALE IN A FIRST ZONE AND DISTILLING IT WITH HEAT TRANSFER MEANS IN SAID FIRST ZONE TO REMOVE VOLATILIZABLE OILS THEREFROM, WITHDRAWING THE DEVOLATILIZED SHALE BY GRAVITY TO A SECOND ZONE BELOW SAID FIRST ZONE, FLUIDIZING SADI DEVOLATILIZED SHALE AND BURNING OFF COMBUSTIBLE MATERIAL ON SAID DEVOLATILIZED SHALE IN SAID SECOND ZONE TO SUPPLY HEAT TO A HEAT TRANSFER MEANS, AND CONTINUOUSLY REFLUXING SULFUR VOLATILE IN THE BURNING ZONE AND CONDENSABLE IN THE DISTILLING ZONE IN BOTH DIRECTIONS BETWEEN SAID HEAT TRANSFER MEANS, THEREBY UTILIZING THE HEAT OF COMBUSTION IN SAID BURNING ZONE TO CARRY OUT THE DISTILLATION.
Claim 2
Dependent Claim
112 words
THE PROCESS OF DISTILLING SUBDIVIDED OIL-BEARING SHALE AND THE LIKE WHICH COMPRISES FLUIDIZING SAID SHALE IN A FIRST ZONE AND DISTILLING IT WITH HEAT TRANSFER MEANS IN SAID FIRST ZONE TO REMOVE VOLATILIZABLE OILS THEREFROM, WITHDRAWING THE DEVOLATILIZED SHALE BY GRAVITY TO A SECOND ZONE BELOW SAID FIRST ZONE, FLUIDIZING SADI DEVOLATILIZED SHALE AND BURNING OFF COMBUSTIBLE MATERIAL ON SAID DEVOLATILIZED SHALE IN SAID SECOND ZONE TO SUPPLY HEAT TO A HEAT TRANSFER MEANS, AND CONTINUOUSLY REFLUXING SULFUR VOLATILE IN THE BURNING ZONE AND CONDENSABLE IN THE DISTILLING ZONE IN BOTH DIRECTIONS BETWEEN SAID HEAT TRANSFER MEANS, THEREBY UTILIZING THE HEAT OF COMBUSTION IN SAID BURNING ZONE TO CARRY OUT THE DISTILLATION.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-12-20 | 1958-06-21 | 1958-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-12-20 | 1962-06-21 | 1962-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-12-20 | 1966-06-21 | 1966-12-21 | $7700.00 | Window Closed / Lapsed |