US2938868A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of controlling regeneration of ion exchangers and apparatus
Assignee: Infilco Inc
•
Filing: 1955-03-11
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Granted: 1960-05-31
•
Expires: 1975-03-11
Abstract
No abstract record available.
Inventors
- 👤 Herbert G Carlson
- 👤 Hilding B Gustafson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:23
CPC Classifications
B; B01; B01J; B01J49/00; B01J49/80; B01J49/85; B01J49/05; B01J49/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
A METHOD OF CONTROLLING THE REGENERATION OF AN ION EXCHANGE PLANT OF THE TYPE INCLUDING A FIRST CATION EXCHANGE UNIT OPERATING IN THE HYDROGEN CYCLE, A FIRST ANION EXCHANGE UNIT, A SECOND EXCHANGE UNIT OPERATING IN THE HYDROGEN CYCLE, AND A SECOND ANION EXCHANGE UNIT, CONNECTED IN SERIES IN THE ABOVE SEQUENCE, COMPRISING THE STEPS OF PASSING THE SOLUTION TO BE TREATED THROUGH SAID PLANT, MEASURING AN ELECTRICALLY DETERMINABLE CHARACTERISTIC OF THE EFFLUENT OF SAID SECOND CATION EXCHANGE UNIT, MEASURING AN ELECTRICALLY DETERMINABLE CHARACTER-
Claim 2
Independent Claim
84 words
A METHOD OF CONTROLLING THE REGENERATION OF AN ION EXCHANGE PLANT OF THE TYPE INCLUDING A FIRST CATION EXCHANGE UNIT OPERATING IN THE HYDROGEN CYCLE, A FIRST ANION EXCHANGE UNIT, A SECOND EXCHANGE UNIT OPERATING IN THE HYDROGEN CYCLE, AND A SECOND ANION EXCHANGE UNIT, CONNECTED IN SERIES IN THE ABOVE SEQUENCE, COMPRISING THE STEPS OF PASSING THE SOLUTION TO BE TREATED THROUGH SAID PLANT, MEASURING AN ELECTRICALLY DETERMINABLE CHARACTERISTIC OF THE EFFLUENT OF SAID SECOND CATION EXCHANGE UNIT, MEASURING AN ELECTRICALLY DETERMINABLE CHARACTER-
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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) | 1963-05-31 | 1963-11-30 | 1964-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-31 | 1967-11-30 | 1968-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-31 | 1971-11-30 | 1972-05-31 | $7700.00 | Window Closed / Lapsed |