Patent US3077488A successfully refreshed from Google Patents.
US3077488A
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Method of oxidizing ferrous salts into ferric salts in the presence of a gas containing free oxygen
Assignee: Individual
•
Filing: 1959-03-12
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Granted: 1963-02-12
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Expires: 1979-03-12
Abstract
No abstract record available.
Inventors
- 👤 Robert M Mercier
- 👤 Yoland P P Mayor
- 👤 Bieselaar Dirk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:08
CPC Classifications
C; C01; C01G; C01G49/00; Y; Y10; Y10S; Y10S423/00; Y10S423/09; Y10S423/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
A METHOD OF OXIDIZING INORGANIC FERROUS SALTS INTO FERRIC SALTS COMPRISING THE STEPS OF ADDING TO A SLUTION OF SAID FERROUS SALTS AN AMINO-ACID CONTAINING A CARBOXYLIC GROUP AND AN AMINO GROUP CONNECTED WITH THE SAME CARBON ATOM, SUBJECTING SAID SOLUTION TO A GAS CONTAINING FREE OXYGEN, RESULTING IN SOLUBLE FERROUS SALTS AND INSOLUBLE FERRIC SALTS, THEREBY OBTAINING AN AQUEOUS SUSPENSION OF INSOLUBLE FERRIC SALTS, TO FUNCTION AS AN OXIDIZING REAGENT.
Claim 2
Independent Claim
71 words
A METHOD OF OXIDIZING INORGANIC FERROUS SALTS INTO FERRIC SALTS COMPRISING THE STEPS OF ADDING TO A SLUTION OF SAID FERROUS SALTS AN AMINO-ACID CONTAINING A CARBOXYLIC GROUP AND AN AMINO GROUP CONNECTED WITH THE SAME CARBON ATOM, SUBJECTING SAID SOLUTION TO A GAS CONTAINING FREE OXYGEN, RESULTING IN SOLUBLE FERROUS SALTS AND INSOLUBLE FERRIC SALTS, THEREBY OBTAINING AN AQUEOUS SUSPENSION OF INSOLUBLE FERRIC SALTS, TO FUNCTION AS AN OXIDIZING REAGENT.
References Cited (Backward Citations)
US1888186A
Cited
US2462124A
Cited
US2772146A
Cited
US2819950A
Cited
US2890233A
Cited
US2831885A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-02-11 | 1966-08-13 | 1967-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-11 | 1970-08-13 | 1971-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-11 | 1974-08-13 | 1975-02-12 | $7700.00 | Window Closed / Lapsed |