US2697724A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ion exchange
Assignee: Sharples Corp
•
Filing: 1950-03-15
•
Granted: 1954-12-21
•
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 08:55
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)
FR540232A
Cited
US1707302A
Cited
US2137430A
Cited
US2151883A
Cited
US2228514A
Cited
US2413844A
Cited
US2341907A
Cited
US2388195A
Cited
GB578520A
Cited
US2461505A
Cited
US2470339A
Cited
US2469683A
Cited
US2481557A
Cited
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 |