US3864233A
Expired / Lapsed
US
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Uranium-Sensitive Electrode Membrane
Assignee: United States Atomic Energy Commission
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Filing: 1973-12-17
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Granted: 1975-02-04
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Expires: 1993-12-17
Abstract
Abstract A uranyl sensitive membrane, useful in an electrochemical concentration cell, comprising a uranyl complex of an organophosphoric acid embedded within a polyvinyl chloride matrix.
Inventors
- 👤 William C Dietrich
- 👤 Delmer L Manning
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:54
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/28; G01N27/30; G01N27/333; G01N27/3335
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
41 words
A URANYL SENSITIVE MEMBRANE COMPRISING A URANYL COMPLEX OF AN ORGANOPHOSPHORIC ACID EMBEDDED WITHIN A POLYVINYL CHLORIDE MATRIX, SAID ORGANOPHOSPHORIC ACID BEING SELECTED FROM THE GROUP CONSISTING OF DI (2-ETHYLHEXYL) PHOSPHORIC ACID, DI (2-ETHYL-4 METHYL-PHENTYL) PHOSPHORIC ACID, AND MONO-N-BUTYL PHOSPHORIC ACID.
Claim 2
Dependent Claim
41 words
A URANYL SENSITIVE MEMBRANE COMPRISING A URANYL COMPLEX OF AN ORGANOPHOSPHORIC ACID EMBEDDED WITHIN A POLYVINYL CHLORIDE MATRIX, SAID ORGANOPHOSPHORIC ACID BEING SELECTED FROM THE GROUP CONSISTING OF DI (2-ETHYLHEXYL) PHOSPHORIC ACID, DI (2-ETHYL-4 METHYL-PHENTYL) PHOSPHORIC ACID, AND MONO-N-BUTYL PHOSPHORIC ACID.
Claim 3
Dependent Claim
15 words
The membrane according to claim 1 further including a polymerization inhibitor for said uranyl complex.
Claim 4
Dependent Claim
30 words
The membrane according to claiM 2 wherein said membrane consists essentially of 4 to 8 weight percent complex, 30 to 40 percent polyvinyl chloride, and 55 to 65 percent inhibitor.
Claim 5
Dependent Claim
23 words
The membrane according to claim 3 wherein said membrane consists essentially of 6 percent complex, 33 percent polyvinyl chloride, and 61 percent inhibitor.
Claim 6
Dependent Claim
25 words
The membrane according to claim 2 wherein said inhibitor is selected from the group consisting of diamyl amyl phosphonate, tri-2-ethyl butyl phosphonate, and di(2-ethylhexyl) phosphonate.
Claim 7
Dependent Claim
14 words
The membrane according to claim 1 wherein said organophosphoric acid is di(2-ethylhexyl) phosphoric acid.
References Cited (Backward Citations)
US3450631A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-03 | 1978-08-05 | 1979-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-03 | 1982-08-05 | 1983-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-03 | 1986-08-05 | 1987-02-04 | $7700.00 | Window Closed / Lapsed |