US2688572A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid purification by electro-dialysis and ion exchange
Assignee: Individual
•
Filing: 1950-09-27
•
Granted: 1954-09-07
•
Expires: 1970-09-27
Abstract
No abstract record available.
Inventors
- 👤 Warshaw Abe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:06
CPC Classifications
B; B01; B01D; B01D61/00; B01D61/42; B01D61/422; B01D61/423; B01D2311/00; B01D2311/26; B01D2311/2623
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
THE METHOD OF PURIFYING FINAL MOLASSES SO THAT THE SUGAR THEREOF MAY BE USED COMPRISING: ELECTRODIALYZING THE MOLASSES UNTIL THE ASH CONTENT IS NO GREATER THAN 3%, ACCUMULATING ACIDS AND ALKALIES AT THE ELECTRODES DURING THE ELECTRODIALYZING ACTION; THEREAFTER ION EXCHANGING ANION AND CATIONS OF THE MOLASSES UNTIL THE DESIRED PURITY IS OBTAINED; AND REGENERATING THE ION EXCHANGERS WITH THE ACIDS AND ALKALIES FORMED DURING THE ELECTRODIALYZING STEP.
Claim 2
Independent Claim
68 words
THE METHOD OF PURIFYING FINAL MOLASSES SO THAT THE SUGAR THEREOF MAY BE USED COMPRISING: ELECTRODIALYZING THE MOLASSES UNTIL THE ASH CONTENT IS NO GREATER THAN 3%, ACCUMULATING ACIDS AND ALKALIES AT THE ELECTRODES DURING THE ELECTRODIALYZING ACTION; THEREAFTER ION EXCHANGING ANION AND CATIONS OF THE MOLASSES UNTIL THE DESIRED PURITY IS OBTAINED; AND REGENERATING THE ION EXCHANGERS WITH THE ACIDS AND ALKALIES FORMED DURING THE ELECTRODIALYZING STEP.
References Cited (Backward Citations)
DE41323C
Cited
DE48757C
Cited
US455631A
Cited
US751179A
Cited
US741689A
Cited
US1901652A
Cited
US2140341A
Cited
US2388222A
Cited
US2413844A
Cited
US2394031A
Cited
US2502614A
Cited
US2490716A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-09-06 | 1958-03-08 | 1958-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-06 | 1962-03-08 | 1962-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-06 | 1966-03-08 | 1966-09-07 | $7700.00 | Window Closed / Lapsed |