US2774732A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Operation of cation exchange units
Assignee: Permutit Co
•
Filing: 1951-06-14
•
Granted: 1956-12-18
•
Expires: 1971-06-14
Abstract
No abstract record available.
Inventors
- 👤 Blight Frank Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 00:04
CPC Classifications
B; B01; B01J; B01J49/00; B01J49/80; Y; Y10; Y10T; Y10T137/00; Y10T137/0318; Y10T137/0324; Y10T137/0329; Y10T137/034
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
A PROCESS OF DETERMINING WHEN ANY ONE OF AT LEAST TWO HYDROGEN CATION EXCHANGE UNITS OPERATING IN PARALLEL REQUIRES REGENERATION WHICH COMPRISES, COMPARING THE CONDUCTIVITY OF THE COMBINED EFFLUENTS FROM SAID UNITS, WITH THE CONDUCTIVITY OF THE EFFLUENT FROM SAID ONE UNIT, AND REGENERATING SAID ONE UNIT WHEN THE CONDUCTIVITY OF ITS EFFLUENT BECOMES SUBSTANTIALLY LOWER THAN THE CONDUCTIVITY OF THE COMBINED EFFLUENTS.
Claim 2
Dependent Claim
63 words
A PROCESS OF DETERMINING WHEN ANY ONE OF AT LEAST TWO HYDROGEN CATION EXCHANGE UNITS OPERATING IN PARALLEL REQUIRES REGENERATION WHICH COMPRISES, COMPARING THE CONDUCTIVITY OF THE COMBINED EFFLUENTS FROM SAID UNITS, WITH THE CONDUCTIVITY OF THE EFFLUENT FROM SAID ONE UNIT, AND REGENERATING SAID ONE UNIT WHEN THE CONDUCTIVITY OF ITS EFFLUENT BECOMES SUBSTANTIALLY LOWER THAN THE CONDUCTIVITY OF THE COMBINED EFFLUENTS.
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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) | 1959-12-18 | 1960-06-18 | 1960-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-18 | 1964-06-18 | 1964-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-18 | 1968-06-18 | 1968-12-18 | $7700.00 | Window Closed / Lapsed |