US2778714A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for recovering base ions from waste sulfite liquor and producing sulfite cooking liquor
Assignee: Veolia WTS Systems USA Inc
•
Filing: 1952-04-26
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Granted: 1957-01-22
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Expires: 1972-04-26
Abstract
No abstract record available.
Inventors
- 👤 Andrew A Kasper
- 👤 William E Katz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:24
CPC Classifications
D; D21; D21C; D21C11/00; D21C11/0042; D21C11/005; B; B01; B01J; B01J47/00; B01J47/10; Y; Y10; Y10S; Y10S423/00; Y10S423/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
169 words
A METHOD OF RECOVERING VALUABLE CONSTITUENTS FROM WASTE LIQUOR FROM PULPING OPERATION AND PRODUCING FRESH COOKING LIQUOR WHICH COMPRISES PASSING WATER UPWARDLY THROUGH AT LEAST ONE SUBSTANTIALLY VERTICALLY DISPOSED BED OF SYNTHETIC ORGANIC CATION EXCHANGE RESIN WHICH IS AT LEAST PARTIALLY IN THE HYDROGEN FORM DISPOSED ON A PERVIOUS SUPPORT, SUBSTANTIALLY TO FILL THE VOID SPACES IN AID BED WITH WATER AND TO PROVIDE A LAYER OF WATER WITHIN AND BELOW SAID PERVIOUS SUPPORT, PASSING AN AQUEOUS ALKALINE SOLUTION HAVING SODIUM AND SULFIDE CONSTITUENTS DERIVED FROM THE SMELTING OF SAID WASTE LIQUOR UPWARDLY INTO SAID LAYER OF WATER AND THROUGH SAID BED OF CATION EXCHANGE RESIN WHEREUPON AT LEAST A PORTION OF THE EXCHANGEABLE HYDROGEN OF SAID CATION EXCHANGE RESIN IS REPLACED WITH SODIUM AND GASEOUS HYROGEN SULFIDE IS EVOLVED, MAINTANING THE FLOW OF SAID AQUEOUS ALKALINE SOLUTION AT A FLUIDIZING VELOCITY FOR SAID BED, AND SUBSEQUENTLY PASSING AN AQUEOUS SOLUTION OF AVAILABLE SULFUROUS ACID THROUGH SAID BED OF CATION EXCHANGE RESIN AND COLLECTING THE EFFLUENT FROM THE LATER.
Claim 2
Independent Claim
169 words
A METHOD OF RECOVERING VALUABLE CONSTITUENTS FROM WASTE LIQUOR FROM PULPING OPERATION AND PRODUCING FRESH COOKING LIQUOR WHICH COMPRISES PASSING WATER UPWARDLY THROUGH AT LEAST ONE SUBSTANTIALLY VERTICALLY DISPOSED BED OF SYNTHETIC ORGANIC CATION EXCHANGE RESIN WHICH IS AT LEAST PARTIALLY IN THE HYDROGEN FORM DISPOSED ON A PERVIOUS SUPPORT, SUBSTANTIALLY TO FILL THE VOID SPACES IN AID BED WITH WATER AND TO PROVIDE A LAYER OF WATER WITHIN AND BELOW SAID PERVIOUS SUPPORT, PASSING AN AQUEOUS ALKALINE SOLUTION HAVING SODIUM AND SULFIDE CONSTITUENTS DERIVED FROM THE SMELTING OF SAID WASTE LIQUOR UPWARDLY INTO SAID LAYER OF WATER AND THROUGH SAID BED OF CATION EXCHANGE RESIN WHEREUPON AT LEAST A PORTION OF THE EXCHANGEABLE HYDROGEN OF SAID CATION EXCHANGE RESIN IS REPLACED WITH SODIUM AND GASEOUS HYROGEN SULFIDE IS EVOLVED, MAINTANING THE FLOW OF SAID AQUEOUS ALKALINE SOLUTION AT A FLUIDIZING VELOCITY FOR SAID BED, AND SUBSEQUENTLY PASSING AN AQUEOUS SOLUTION OF AVAILABLE SULFUROUS ACID THROUGH SAID BED OF CATION EXCHANGE RESIN AND COLLECTING THE EFFLUENT FROM THE LATER.
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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) | 1960-01-22 | 1960-07-23 | 1961-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-22 | 1964-07-23 | 1965-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-22 | 1968-07-23 | 1969-01-22 | $7700.00 | Window Closed / Lapsed |