US2525497A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multibed cartridge for ion exchange
Assignee: Wyeth Holdings LLC
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Filing: 1946-07-12
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Granted: 1950-10-10
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Expires: 1966-07-12
Abstract
No abstract record available.
Inventors
- 👤 Monfried Leon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:08
CPC Classifications
B; B65; B65D; B65D81/00; B01; B01J; B01J47/00; B01J47/02; B01J47/022; B01J47/026; B01J47/028; C; C02; C02F; C02F1/00; C02F1/42
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
106 words
A PACKAGE WHICH CONSISTS OF A TUBULAR CONTAINER COMPRISING A TOP COVER PROVIDED WITH A HOLE, A TOP FORAMINOUS MEMBER HELD A SUBSTANTIAL DISTANCE APART FROM SAID TOP COVER, A BOTTOM COVER WITH A HOLE AND A BOTTOM FORAMINOUS MEMBER HELD A SUBSTANTIAL DISTANCE APART FROM SAID BOTTOM COVER, AND AT LEAST FOUR ALTERNATE LAYERS OF CATION ACTIVE MATERIALS AND ANION ACTIVE MATERIALS PACKED BETWEEN THE TOP AND BOTTOM FORAMINOUS MEMBERS SUFFICIENTLY TIGHTLY TO PREVENT MIXING OF SAID CATION AND ANION ACTIVE MATERIALS, SAID CONTAINER BEING ADAPTED TO PERMIT THE UNIFORM PASSAGE OF A LIQUID TO BE DEMINERALIZED THROUGH SAID CATION AND ANION ACTIVE MATERIAL LAYERS.
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) | 1953-10-09 | 1954-04-10 | 1954-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-09 | 1958-04-10 | 1958-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-09 | 1962-04-10 | 1962-10-10 | $7700.00 | Window Closed / Lapsed |