Patent CA485078A successfully refreshed from Google Patents.
US2697724A
Expired / Lapsed
US
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Assignee: Sharples Corp
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Filing: 1950-03-15
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Granted: 1954-12-21
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Expires: 1970-03-15
Abstract
No abstract record available.
Inventors
- 👤 Donald W Collier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:43
CPC Classifications
B; B01; B01J; B01J47/00; B01J47/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
A CONTINUOUS PROCESS FOR REMOVING ACONITIC ACID ANIONS FROM AN AQUEOUS SOLUTION OF MOLASSES WHICH COMPRISES CONTINUOUSLY FLOWING SAID SOLUTION THROUGH A PLURALITY OF SUCCESSIVE TREATING STAGES, MAINTAINING THE PH OF THE SOLUTION WITHIN A RANGE OF FROM ABOUT 4 TO ABOUT 6, MAINTAINING A CONTINUOUS FLOW OF SOLID PARTICULATE ANIONIC EXCHANGE MATERIAL IN COUNTER-CURRENT FLOW TO SAID SOLUTION, INTRODUCING SAID ANIONIC EXCHANGE MATERIAL AT
Claim 2
Dependent Claim
65 words
A CONTINUOUS PROCESS FOR REMOVING ACONITIC ACID ANIONS FROM AN AQUEOUS SOLUTION OF MOLASSES WHICH COMPRISES CONTINUOUSLY FLOWING SAID SOLUTION THROUGH A PLURALITY OF SUCCESSIVE TREATING STAGES, MAINTAINING THE PH OF THE SOLUTION WITHIN A RANGE OF FROM ABOUT 4 TO ABOUT 6, MAINTAINING A CONTINUOUS FLOW OF SOLID PARTICULATE ANIONIC EXCHANGE MATERIAL IN COUNTER-CURRENT FLOW TO SAID SOLUTION, INTRODUCING SAID ANIONIC EXCHANGE MATERIAL AT
References Cited (Backward Citations)
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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) | 1957-12-20 | 1958-06-21 | 1958-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-12-20 | 1962-06-21 | 1962-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-12-20 | 1966-06-21 | 1966-12-21 | $7700.00 | Window Closed / Lapsed |