US3306859A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for fluid treatment
Assignee: Crane Co
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Filing: 1963-12-31
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Granted: 1967-02-28
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Expires: 1983-12-31
Abstract
No abstract record available.
Inventors
- 👤 Sloan Louis
- 👤 Nicholas J Nitti
- 👤 Jack B Pratt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:53
CPC Classifications
B; B01; B01J; B01J47/00; B01J47/02; B01J47/026; B01J49/00; B01J49/05
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
115 words
THE METHOD OF RECOVERING ABSORBED IONIC MATERIAL FROM AN ION EXCHANGE BED IN WHICH THERE ARE AT LEAST TWO ZONES, A FIRST OF WHICH CONTAINS A HIGH CONCENTRATION OF THE ABSORBED IONIC MATERIAL, AND A SECOND OF WHICH CONTAINS A LOWER CONCENTRATION OF THE SAME ABSORBED IONIC MATERIAL, SAID METHOD COMPRISING THE STEPS OF AT LEAST PARTIALLY REGENERATING THE SECOND ZONE WITH A LIQUID HAVING A LOW CONCENTRATION OF THE IONIC MATERIAL OF THE TYPE ABSORBED, AND OF AT LEAST PARTIALLY REGENERATING THE FIRST ZONE WITH A LIQUID HAVING A HIGHER CONCENTRATION OF THE IONIC MATERIAL OF THE TYPE ABSORBED RESULTING FROM THE AT LEAST PARTIAL REGENERATION OF A SECOND ZONE OF THE TYPE SPECIFIED.
Claim 2
Independent Claim
115 words
THE METHOD OF RECOVERING ABSORBED IONIC MATERIAL FROM AN ION EXCHANGE BED IN WHICH THERE ARE AT LEAST TWO ZONES, A FIRST OF WHICH CONTAINS A HIGH CONCENTRATION OF THE ABSORBED IONIC MATERIAL, AND A SECOND OF WHICH CONTAINS A LOWER CONCENTRATION OF THE SAME ABSORBED IONIC MATERIAL, SAID METHOD COMPRISING THE STEPS OF AT LEAST PARTIALLY REGENERATING THE SECOND ZONE WITH A LIQUID HAVING A LOW CONCENTRATION OF THE IONIC MATERIAL OF THE TYPE ABSORBED, AND OF AT LEAST PARTIALLY REGENERATING THE FIRST ZONE WITH A LIQUID HAVING A HIGHER CONCENTRATION OF THE IONIC MATERIAL OF THE TYPE ABSORBED RESULTING FROM THE AT LEAST PARTIAL REGENERATION OF A SECOND ZONE OF THE TYPE SPECIFIED.
Claim 3
Dependent Claim
16 words
THE METHOD ACCORDING TO CLAIM 1 IN WHICH SAID IONIC MATERIAL IS CHROMATE AND PHOSPHATE IONS.
References Cited (Backward Citations)
US2733204A
Cited
US3002815A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-27 | 1970-08-29 | 1971-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-27 | 1974-08-29 | 1975-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-27 | 1978-08-29 | 1979-02-28 | $7700.00 | Window Closed / Lapsed |