Patent US3302372A successfully refreshed from Google Patents.
US3302372A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas scrubbing process and apparatus
Assignee: Armour Agricultural Chemical Co
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Filing: 1964-04-17
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Granted: 1967-02-07
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Expires: 1984-04-17
Abstract
No abstract record available.
Inventors
- 👤 Phillip E Hynson
- 👤 Jr William R Mustian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:17
CPC Classifications
B; B01; B01D; B01D47/00; B01D47/06; Y; Y10; Y10S; Y10S261/00; Y10S261/72
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
142 words
A PROCESS FOR THE CONCENTRATION OF WET PROCESS PHOSPHORIC ACID IN WHICH THE ACID IS CONCENTRATED BY CONTACT WITH HOT COMBUSTION GASES AND THE COMBUSTION GASES CONTAINING FLUORINE REMOVED AND IN WHICH SPINNING SPHERES ARE CONFINED IN A ZONE SPACE BETWEEN THE UPPER AND LOWER PERFORATED PLATES AND WATER IS DISCHARGED DOWNWARDLY ONTO THE UPPER, COMPRISING THE STEPS OF MAINTAINING THE VOLUME OF SAID SPHERES AT SUBSTANTIALLY LESS THAN ONE-HALF THE VOLUME OF SAID ZONE SPACE, PASSING SAID GASES UPWARDLY THROUGH SAID ZONE SPACE AT A VELOCITY OF ABOUT 10001250 FEET PER MINUTE, CONTACTING SAID SPHERES WITH SAID GASES AND URGING SAID SPHERES TOWARD SAID UPPER PLATE, SIMULTANEOUSLY DISCHARGING SAID WATER DOWNWARDLY AGAINST SAID SPHERES WITH SUFFICIENT FORCE TO HOLD SAID SPHERES BELOW AND OUT OF CONTACT WITH SAID PLATE IN AN UNSTABLE NON-BED FORMATION WHEREBY THE SPHERES MOVE IN RANDOM PATHS.
Claim 2
Dependent Claim
142 words
A PROCESS FOR THE CONCENTRATION OF WET PROCESS PHOSPHORIC ACID IN WHICH THE ACID IS CONCENTRATED BY CONTACT WITH HOT COMBUSTION GASES AND THE COMBUSTION GASES CONTAINING FLUORINE REMOVED AND IN WHICH SPINNING SPHERES ARE CONFINED IN A ZONE SPACE BETWEEN THE UPPER AND LOWER PERFORATED PLATES AND WATER IS DISCHARGED DOWNWARDLY ONTO THE UPPER, COMPRISING THE STEPS OF MAINTAINING THE VOLUME OF SAID SPHERES AT SUBSTANTIALLY LESS THAN ONE-HALF THE VOLUME OF SAID ZONE SPACE, PASSING SAID GASES UPWARDLY THROUGH SAID ZONE SPACE AT A VELOCITY OF ABOUT 10001250 FEET PER MINUTE, CONTACTING SAID SPHERES WITH SAID GASES AND URGING SAID SPHERES TOWARD SAID UPPER PLATE, SIMULTANEOUSLY DISCHARGING SAID WATER DOWNWARDLY AGAINST SAID SPHERES WITH SUFFICIENT FORCE TO HOLD SAID SPHERES BELOW AND OUT OF CONTACT WITH SAID PLATE IN AN UNSTABLE NON-BED FORMATION WHEREBY THE SPHERES MOVE IN RANDOM PATHS.
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) | 1970-02-06 | 1970-08-08 | 1971-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-06 | 1974-08-08 | 1975-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-06 | 1978-08-08 | 1979-02-07 | $7700.00 | Window Closed / Lapsed |