Patent US2709643A successfully refreshed from Google Patents.
US2709643A
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Contacting liquids with solids
Assignee: Shell Development Co
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Filing: 1954-09-20
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Granted: 1955-05-31
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Expires: 1974-09-20
Abstract
No abstract record available.
Inventors
- 👤 Norman E Peery
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:51
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/18; B01J19/185; B01J47/00; B01J47/10; B01J8/00; B01J8/16; B01J2208/00; B01J2208/00008; B01J2208/00548; B01J2208/0061; B01J2219/00; B01J2219/00049; B01J2219/00164; B01J2219/00182
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
166 words
IN A PROCESS FOR CONTINUOUSLY CONTACTING A LIQUID WITH A SOLID WHICH COMPRISES CONTINUOUSLY PASSING A LIQUID TO BE CONTACTED AT A SUBSTANTIALLY CONSTANT RATE THROUGH A FIXED FORAMINOUS BED OF THE SOLID, THE IMPROVEMENT WHICH COMPRISES CONTINUOUSLY WITHDRAWING CONTACTED LIQUID PASSED THROUGH SAID BED AT SUCH A RATE AS TO MAINTAIN SAID BED CONTINUOUSLY FLOODED WITH SAID LIQUID WHILE MAINTAINING A VAPOR SPACE ABOVE THE LIQUID LEVEL, CONTINUOUSLY RECIPROCATING A PORTION OF SAID LIQUID PASSING THROUGH SAID BED BETWEEN A POINT NEAR THE BOTTOM OF SAID BED AND A SEPARATE PLENUM, EFFECTING SAID RECIPROCATION OF LIQUID TO AND FROM SAID BED AND PLENUM AT A RATE OF FROM ABOUT 10 TO ABOUT 60 CYCLES PER MINUTE TO IMPART TO EACH INCREMENT OF THE LIQUID A PLURALITY OF PULSES DURING ITS PASSAGE THROUGH SAID BED WHILE MAINTAINING THE RATES OF WITHDRAWING AND RECHARGING OF LIQUID TO AND FROM SAID BED IN THE RECIPROCATION CYCLES BELOW THOSE CAUSING ANY MOVEMENT OF THE SOLID PARTICLES IN SAID BED.
Claim 2
Dependent Claim
166 words
IN A PROCESS FOR CONTINUOUSLY CONTACTING A LIQUID WITH A SOLID WHICH COMPRISES CONTINUOUSLY PASSING A LIQUID TO BE CONTACTED AT A SUBSTANTIALLY CONSTANT RATE THROUGH A FIXED FORAMINOUS BED OF THE SOLID, THE IMPROVEMENT WHICH COMPRISES CONTINUOUSLY WITHDRAWING CONTACTED LIQUID PASSED THROUGH SAID BED AT SUCH A RATE AS TO MAINTAIN SAID BED CONTINUOUSLY FLOODED WITH SAID LIQUID WHILE MAINTAINING A VAPOR SPACE ABOVE THE LIQUID LEVEL, CONTINUOUSLY RECIPROCATING A PORTION OF SAID LIQUID PASSING THROUGH SAID BED BETWEEN A POINT NEAR THE BOTTOM OF SAID BED AND A SEPARATE PLENUM, EFFECTING SAID RECIPROCATION OF LIQUID TO AND FROM SAID BED AND PLENUM AT A RATE OF FROM ABOUT 10 TO ABOUT 60 CYCLES PER MINUTE TO IMPART TO EACH INCREMENT OF THE LIQUID A PLURALITY OF PULSES DURING ITS PASSAGE THROUGH SAID BED WHILE MAINTAINING THE RATES OF WITHDRAWING AND RECHARGING OF LIQUID TO AND FROM SAID BED IN THE RECIPROCATION CYCLES BELOW THOSE CAUSING ANY MOVEMENT OF THE SOLID PARTICLES IN SAID BED.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-05-30 | 1958-11-29 | 1959-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-05-30 | 1962-11-29 | 1963-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-05-30 | 1966-11-29 | 1967-05-31 | $7700.00 | Window Closed / Lapsed |