US3054746A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separation of dissimilar metal ions
Assignee: Radiation Applications Inc
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Filing: 1959-05-06
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Granted: 1962-09-18
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Expires: 1979-05-06
Abstract
No abstract record available.
Inventors
- 👤 Jr Elmer L Gaden
- 👤 Robert W Schnepf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:30
CPC Classifications
B; B01; B01J; B01J45/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
A PROCESS WHICH COMPRISES COMBINING ETHYLENEDIAMINETRAACETIC ACID WITH AN AQUEOU MEDIUM CONTAINING CALCIUM AND STRONTIUM IONS IN TRACE AMOUNTS AND THEREBY COMPLEXING THE CALCIUM IONS, COMBINING A WATER SOLUBLE IONIC SULPHONATE WITH THE AQUEOUS MEDIUM TO PRODUCE A WATER SOLUTION, SURFACE ACTIVE PRODUCT WITH THE STRONTIUM IONS AND THEREBY CONCENTRATE AT THE SURFACE LAYER OF THE AQUEOUS MEDIUM, AND PASSING A GASIFORM MATERIAL THROUGH THE AQUEOUS MEDIUM TO PRODECE A FOAM, AND SEPARATING THE FOAM BY PASSING THROUGH A TRANSFER ZONE FROM THE SURFACE OF THE AQUEOUS MEDIUM.
Claim 2
Dependent Claim
88 words
A PROCESS WHICH COMPRISES COMBINING ETHYLENEDIAMINETRAACETIC ACID WITH AN AQUEOU MEDIUM CONTAINING CALCIUM AND STRONTIUM IONS IN TRACE AMOUNTS AND THEREBY COMPLEXING THE CALCIUM IONS, COMBINING A WATER SOLUBLE IONIC SULPHONATE WITH THE AQUEOUS MEDIUM TO PRODUCE A WATER SOLUTION, SURFACE ACTIVE PRODUCT WITH THE STRONTIUM IONS AND THEREBY CONCENTRATE AT THE SURFACE LAYER OF THE AQUEOUS MEDIUM, AND PASSING A GASIFORM MATERIAL THROUGH THE AQUEOUS MEDIUM TO PRODECE A FOAM, AND SEPARATING THE FOAM BY PASSING THROUGH A TRANSFER ZONE FROM THE SURFACE OF THE AQUEOUS MEDIUM.
References Cited (Backward Citations)
US2820759A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-09-17 | 1966-03-19 | 1966-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-17 | 1970-03-19 | 1970-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-17 | 1974-03-19 | 1974-09-18 | $7700.00 | Window Closed / Lapsed |