US2841550A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of operating a demineralizing installation
Assignee: PFANDLER PERMUTIT Inc
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Filing: 1955-03-18
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Granted: 1958-07-01
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Expires: 1975-03-18
Abstract
No abstract record available.
Inventors
- 👤 Harry L Beohner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:42
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/42; B; B01; B01J; B01J39/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
A PROCESS OF OPERATING A DEMINERALIZING INSTALLATIOM COMPRISING A PLURALITY OF PAIRS OF ION EXCHANGE UNITS ADAPTED TO BE OPERATED IN SERIES WHEREBY LIQUID TO BE TREATED IS PASSED THROUGH A MAXIMUM OF TWO OF SAID PAIRS IN SERIES, EACH OF SAID PAIRS CONSISTING OF A CATION EXCHANGE UNIT AND AN ANION EXCHANGE UNIT, WHICH PROCESS COMPRISES CARRYING OUT WITH EACH OF SAID PLURALITY OF PAIRS THE FOLLOWING STEPS: (ONE) PLACING SAID PAIR AS THE FIRST PAIR OF A SERIES UNTIL THE CAPACITY OF SAID PAIR HAS BEEN EXHAUSTED: (TWO) THEREAFTER RECONDITIONING SAID PAIR; (THREE) THEREAFTER PLACING SAID PAIR AGAIN AS THE FIRST PAIR OF A SERIES; (FOUR) THEREAFTER PLACING SAID PAIR AS THE SECOND PAIR OF A SERIES; AND THEREAFTER REPEATING STEPS (ONE) TO (FOUR).
Claim 2
Dependent Claim
126 words
A PROCESS OF OPERATING A DEMINERALIZING INSTALLATIOM COMPRISING A PLURALITY OF PAIRS OF ION EXCHANGE UNITS ADAPTED TO BE OPERATED IN SERIES WHEREBY LIQUID TO BE TREATED IS PASSED THROUGH A MAXIMUM OF TWO OF SAID PAIRS IN SERIES, EACH OF SAID PAIRS CONSISTING OF A CATION EXCHANGE UNIT AND AN ANION EXCHANGE UNIT, WHICH PROCESS COMPRISES CARRYING OUT WITH EACH OF SAID PLURALITY OF PAIRS THE FOLLOWING STEPS: (ONE) PLACING SAID PAIR AS THE FIRST PAIR OF A SERIES UNTIL THE CAPACITY OF SAID PAIR HAS BEEN EXHAUSTED: (TWO) THEREAFTER RECONDITIONING SAID PAIR; (THREE) THEREAFTER PLACING SAID PAIR AGAIN AS THE FIRST PAIR OF A SERIES; (FOUR) THEREAFTER PLACING SAID PAIR AS THE SECOND PAIR OF A SERIES; AND THEREAFTER REPEATING STEPS (ONE) TO (FOUR).
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-30 | 1961-12-30 | 1962-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-30 | 1965-12-30 | 1966-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-30 | 1969-12-30 | 1970-07-01 | $7700.00 | Window Closed / Lapsed |