Patent US2551519A successfully refreshed from Google Patents.
US2551519A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of treating sugar solutions
Assignee: Rohm and Haas Co
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Filing: 1948-04-13
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Granted: 1951-05-01
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Expires: 1968-04-13
Abstract
No abstract record available.
Inventors
- 👤 James C Winters
- 👤 Kunin Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:08
CPC Classifications
C; C13; C13B; C13B20/00; C13B20/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
IN A PROCESS OF MANUFACTURING SUGAR WHEREIN THE DEFECATED SUGAR SYRUP IS DEIONIZED BY PASSING IT THROUGH ALTERNATING BEDS OF CATION-EXCHANGE MATERIAL HAVING STRONGLY ACIDIC POLAR GROUPS AND ANION-EXCHANGE RESIN, THE IMPROVEMENT WHICH COMPRISES TREATING THE SUGAR SYRUP TO REDUCE ITS ASH CONTENT BY PASSING IT THROUGH A BED OF CATION-EXCHANGE RESIN IN WHICH THE POLAR GROUPS ARE CARBOXYLIC ACID GROUPS IMMEDIATELY PRIOR TO ITS PASSAGE THROUGH SAID ALTERNATING BEDS OF STRONGLY ACIDIC CATION-EXCHANGE MATERIAL AND ANION-EXCHANGE RESIN.
Claim 2
Dependent Claim
78 words
IN A PROCESS OF MANUFACTURING SUGAR WHEREIN THE DEFECATED SUGAR SYRUP IS DEIONIZED BY PASSING IT THROUGH ALTERNATING BEDS OF CATION-EXCHANGE MATERIAL HAVING STRONGLY ACIDIC POLAR GROUPS AND ANION-EXCHANGE RESIN, THE IMPROVEMENT WHICH COMPRISES TREATING THE SUGAR SYRUP TO REDUCE ITS ASH CONTENT BY PASSING IT THROUGH A BED OF CATION-EXCHANGE RESIN IN WHICH THE POLAR GROUPS ARE CARBOXYLIC ACID GROUPS IMMEDIATELY PRIOR TO ITS PASSAGE THROUGH SAID ALTERNATING BEDS OF STRONGLY ACIDIC CATION-EXCHANGE MATERIAL AND ANION-EXCHANGE RESIN.
References Cited (Backward Citations)
US2319359A
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US2191365A
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US2388194A
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US2366650A
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US2340110A
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US2372233A
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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) | 1954-04-30 | 1954-10-30 | 1955-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-30 | 1958-10-30 | 1959-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-30 | 1962-10-30 | 1963-05-01 | $7700.00 | Window Closed / Lapsed |