Patent US620984A successfully refreshed from Google Patents.
Patent US3255106A successfully refreshed from Google Patents.
US3255106A
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Water conditioning system
Assignee: Union Tank Car Co
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Filing: 1963-11-20
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Granted: 1966-06-07
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Expires: 1983-11-20
Abstract
No abstract record available.
Inventors
- 👤 Roland R Reid
- 👤 Edward G Gressman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:00
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/42; C02F1/68; C02F1/685; C02F1/686; C02F1/688; C02F1/008; C02F2101/00; C02F2101/10; C02F2101/20; C02F2101/203; C02F2301/00; C02F2301/04; C02F2301/043; C02F2303/00; C02F2303/16; Y; Y10; Y10T; Y10T137/00; Y10T137/7287; Y10T137/7313; Y10T137/7323; Y10T137/7326
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
IN A WATER SOFTENING PROCESS IN WHICH A BED OF IRON EXCHANGE RESIN PARTICLES IS REGENERATED BY CONTINUOUSLY FLOWING A LIQUID STREAM THERETHROUGH, AN IMPROVEMENT IN THE REGENERATION CYCLE THAT REMOVES IRON THAT FOULS SAID PARTICLES, COMPRISING THE STEPS OF PERIODICALLY INJECTING AN IRON CONTAMINANT SOLVENT INTO SAID CONTINUOUSLY FLOWING LIQUID STREAM, AND IMMEDIATELY THEREAFTER INJECTING A BRINE SOLUTION INTO SAID CONTINUOUSLY FLOWNG LIQUID STREAM.
Claim 2
Dependent Claim
65 words
IN A WATER SOFTENING PROCESS IN WHICH A BED OF IRON EXCHANGE RESIN PARTICLES IS REGENERATED BY CONTINUOUSLY FLOWING A LIQUID STREAM THERETHROUGH, AN IMPROVEMENT IN THE REGENERATION CYCLE THAT REMOVES IRON THAT FOULS SAID PARTICLES, COMPRISING THE STEPS OF PERIODICALLY INJECTING AN IRON CONTAMINANT SOLVENT INTO SAID CONTINUOUSLY FLOWING LIQUID STREAM, AND IMMEDIATELY THEREAFTER INJECTING A BRINE SOLUTION INTO SAID CONTINUOUSLY FLOWNG LIQUID STREAM.
References Cited (Backward Citations)
US2995522A
Cited
US3078224A
Cited
US3032395A
Cited
US3073674A
Cited
US3116240A
Cited
US3139401A
Cited
US3154484A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-06-06 | 1969-12-06 | 1970-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-06 | 1973-12-06 | 1974-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-06 | 1977-12-06 | 1978-06-07 | $7700.00 | Window Closed / Lapsed |