US2947670A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fractional distillation of volatiles from solids
Assignee: P D & P Processing Inc
•
Filing: 1954-07-09
•
Granted: 1960-08-02
•
Expires: 1974-07-09
Abstract
No abstract record available.
Inventors
- 👤 Frank E Hobson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:29
CPC Classifications
C; C10; C10B; C10B47/00; C10B47/18; C10B47/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
A METHOD OF EXTRACTING THE VOLATILE CONSTITUENTS OF AGGEGATES OF SOLID PARTICLES WHICH COMPRISES FLOWING THE SOLID PARTICLES DOWNWARD BY GRAVITY IN A CONTINUOUS STREAM BETWEEN AN INNER CONFINING WALL AND AN OUTER CONFINING WALL, KEEPING SAID PARTICLES IN ENGAGEMENT WITH OTHER PARTICLES IN SAID AND MAINTAINING ENGAGEMENT BETWEEN THE WALLS AND PARTICLES, FLOWING CONTINUOUS STREAMS OF HOT GASOUS FLUID UPWARDLY IN CONTACT WITH AND COVERING SAID CONFINING WALLS THEREBY SUPPLYING HEAT THROUGH SAID WALLS TO THE SOLID PARTICLES AND GRADULLY INCREASING THE TEMPERATURE OF SAID PARTICLES AS THEY MOVE DOWN BETWEEN THE WALLS, AND WITHDRAWING THE VOLATILIZED CONSTITUENTS FROM THE STREAM OF PARTICLES THROUGH ONE OF THE WALLS AND THROUGH THE GAEOUS FLUID STREAM COVERING IT.
Claim 2
Independent Claim
117 words
A METHOD OF EXTRACTING THE VOLATILE CONSTITUENTS OF AGGEGATES OF SOLID PARTICLES WHICH COMPRISES FLOWING THE SOLID PARTICLES DOWNWARD BY GRAVITY IN A CONTINUOUS STREAM BETWEEN AN INNER CONFINING WALL AND AN OUTER CONFINING WALL, KEEPING SAID PARTICLES IN ENGAGEMENT WITH OTHER PARTICLES IN SAID AND MAINTAINING ENGAGEMENT BETWEEN THE WALLS AND PARTICLES, FLOWING CONTINUOUS STREAMS OF HOT GASOUS FLUID UPWARDLY IN CONTACT WITH AND COVERING SAID CONFINING WALLS THEREBY SUPPLYING HEAT THROUGH SAID WALLS TO THE SOLID PARTICLES AND GRADULLY INCREASING THE TEMPERATURE OF SAID PARTICLES AS THEY MOVE DOWN BETWEEN THE WALLS, AND WITHDRAWING THE VOLATILIZED CONSTITUENTS FROM THE STREAM OF PARTICLES THROUGH ONE OF THE WALLS AND THROUGH THE GAEOUS FLUID STREAM COVERING IT.
References Cited (Backward Citations)
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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) | 1963-08-02 | 1964-02-01 | 1964-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-02 | 1968-02-01 | 1968-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-02 | 1972-02-01 | 1972-08-02 | $7700.00 | Window Closed / Lapsed |