Patent US3555786A successfully refreshed from Google Patents.
US3555786A
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US
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Corrugated reactor
Assignee: Multi Minerals Ltd
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Filing: 1969-02-06
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Granted: 1971-01-19
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Expires: 1989-02-06
Abstract
Abstract THE INVENTION RELATES TO AN APPARTUS IN WHICH THE CONTAMINANTS RESULTING FROM THE METHOD OF PRODUCING PHOSPHORIC ACID ARE REMOVED AS VOLATILE COMPOUNDS BY HAVING THE REACTANTS FLOW OVER A CORRUGATED SURFACE. A GAS SPARGING STREAM IS INTRODUCED THROUGH OUTLETS IN THE CORRUGATIONS, AND THE CORRUGATED SURFACE IS HEATED TO AID IN THE REMOVAL OF THE VOLATILIZED CONTAMINANTS.
Inventors
- 👤 Linden Wayne Cochran
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 18:48
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/0006; B01J19/002; C; C01; C01B; C01B25/00; C01B25/16; C01B25/18; C01B25/234; C01B25/2343
Claims Analysis
Total Claims: 0
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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) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |