US3012860A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrogen peroxide purification
Assignee: Shell USA Inc
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Filing: 1958-03-17
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Granted: 1961-12-12
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Expires: 1978-03-17
Abstract
No abstract record available.
Inventors
- 👤 Robert E Meeker
- 👤 Jr Daniel B Luten
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:50
CPC Classifications
C; C01; C01B; C01B15/00; C01B15/01; C01B15/013; C01B15/0135
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
A PROCESS FOR PURIFYING AQUEOUS HYDROGEN PEROXIDE CONTAINING ORGANIC IMPURITIES WHICH COMPRISES CONTACTING THE AQUEOUS PEROXIDE SOLUTION WIGH A COORDINATION COMPLEX OF A HEAVY METAL OF THE GROUP CONSISTING OF VANADIUM, CHROMIUM, MANGANESE, IRON, COBALT, NICKEL, COPPER, MOLYBDENUM, RHODIUM, TUNGSTEN, PLATINUM, MERCURY AND LEAD IN WHICH AT LEAST ONE OF THE COORDINATION SITES OF THE HEAVY METAL IS TAKEN UP BY A MEMBER OF THE GROUP CONSISTING OF POLYAMINES, POLYCARBOXYLIC ACIDS, AMINOCARBOXYLIC ACIDS, CATION EXCHANGE RESINS HAVING SULFONIC ACID GROUPS, CATION EXCHANGE RESINS HAVING CARBOXYLIC ACID GROUPS AND CATION EXCHANGE RESINS HAVING PHOSPHONIC ACID GROUPS AND AT LEAST TWO ADJACENT COORDINATION SITES ON THE HEAVY METAL ARE OCCUPIED BY COMPLEXING AGENT FOR SAID HEAVY METAL WHICH COMPLEXING AGENT IS LEWIS BASE SUBSTANTIALLY REPLACEABLE FROM SAID METAL BY ACETATE ION AND REMOVING FROM THE HYDROGEN PEROXIDE THE CARBOXYLIC ACID WHICH IS THEREBY PRODUCED FROM THE ORGANIC IMPURITIES.
Claim 2
Dependent Claim
146 words
A PROCESS FOR PURIFYING AQUEOUS HYDROGEN PEROXIDE CONTAINING ORGANIC IMPURITIES WHICH COMPRISES CONTACTING THE AQUEOUS PEROXIDE SOLUTION WIGH A COORDINATION COMPLEX OF A HEAVY METAL OF THE GROUP CONSISTING OF VANADIUM, CHROMIUM, MANGANESE, IRON, COBALT, NICKEL, COPPER, MOLYBDENUM, RHODIUM, TUNGSTEN, PLATINUM, MERCURY AND LEAD IN WHICH AT LEAST ONE OF THE COORDINATION SITES OF THE HEAVY METAL IS TAKEN UP BY A MEMBER OF THE GROUP CONSISTING OF POLYAMINES, POLYCARBOXYLIC ACIDS, AMINOCARBOXYLIC ACIDS, CATION EXCHANGE RESINS HAVING SULFONIC ACID GROUPS, CATION EXCHANGE RESINS HAVING CARBOXYLIC ACID GROUPS AND CATION EXCHANGE RESINS HAVING PHOSPHONIC ACID GROUPS AND AT LEAST TWO ADJACENT COORDINATION SITES ON THE HEAVY METAL ARE OCCUPIED BY COMPLEXING AGENT FOR SAID HEAVY METAL WHICH COMPLEXING AGENT IS LEWIS BASE SUBSTANTIALLY REPLACEABLE FROM SAID METAL BY ACETATE ION AND REMOVING FROM THE HYDROGEN PEROXIDE THE CARBOXYLIC ACID WHICH IS THEREBY PRODUCED FROM THE ORGANIC IMPURITIES.
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) | 1964-12-11 | 1965-06-12 | 1965-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-11 | 1969-06-12 | 1969-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-11 | 1973-06-12 | 1973-12-12 | $7700.00 | Window Closed / Lapsed |