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Patent US3869359A successfully refreshed from Google Patents.
US3869359A
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Method of making intimately admixed metal oxides
Assignee: AG fur OXYDENCHEMIE
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Filing: 1973-06-25
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Granted: 1975-03-04
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Expires: 1993-06-25
Abstract
Abstract Intimately admixed metal oxides are produced electrolytically. One component metal oxide is formed from the metal of an anode and at least one other from the metal of a metal compound added to the electrolyte, said compound being poorly soluble in the electrolyte.
Inventors
- 👤 Henri Bernard Beer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:18
CPC Classifications
C; C25; C25B; C25B1/00; C04; C04B; C04B35/00; C04B35/01; C04B35/26; C25B1/01
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
122 words
A METHOD OF MAKING INTIMATELY ADMIXED METAL OXIDES, COMPRISING PLACING INTO AN ELECTROLYTE A PAIR OF ELECTRODES THE ANODE OF WHICH IS A METAL ELECTRODE THE METAL OF WHICH IS TO FORM ONE OF THE INTIMATELY ADMIXED METAL OXIDES AND WHICH METAL WILL FORM A HYDROXIDE OF SAID METAL UPON ELECTROLYSIS OF SAID ELECTROLYTE, ADDING TO THE ELECTROLYTE A POORLY SOLUBLE COMPOUND OF AT LEAST ONE SECOND METAL WHICH IS TO FORM THE OTHER OF THE INTIMATELY ADMIXED METAL OXIDES, PROVIDING IN SAID ELECTROLYTE A SOURCE OF OXYGEN, CARRYING OUT ELECTROLYSIS OF SAID ELECTROLYTE BY MEANS OF SAID ELECTRODES WHILE AGITATING THE ELECTROLYTE, AND RECOVERING THE PRECIPITATED INTIMATELY ADMIXED OXIDES OF THE METAL OF THE ELECTRODE AND THE METAL OF THE COMPOUND.
Claim 2
Independent Claim
122 words
A METHOD OF MAKING INTIMATELY ADMIXED METAL OXIDES, COMPRISING PLACING INTO AN ELECTROLYTE A PAIR OF ELECTRODES THE ANODE OF WHICH IS A METAL ELECTRODE THE METAL OF WHICH IS TO FORM ONE OF THE INTIMATELY ADMIXED METAL OXIDES AND WHICH METAL WILL FORM A HYDROXIDE OF SAID METAL UPON ELECTROLYSIS OF SAID ELECTROLYTE, ADDING TO THE ELECTROLYTE A POORLY SOLUBLE COMPOUND OF AT LEAST ONE SECOND METAL WHICH IS TO FORM THE OTHER OF THE INTIMATELY ADMIXED METAL OXIDES, PROVIDING IN SAID ELECTROLYTE A SOURCE OF OXYGEN, CARRYING OUT ELECTROLYSIS OF SAID ELECTROLYTE BY MEANS OF SAID ELECTRODES WHILE AGITATING THE ELECTROLYTE, AND RECOVERING THE PRECIPITATED INTIMATELY ADMIXED OXIDES OF THE METAL OF THE ELECTRODE AND THE METAL OF THE COMPOUND.
Claim 3
Dependent Claim
26 words
A method as claimed in claim 1 in which said step of providing a source of oxygen comprises blowing an oxygen containing gas into the electrolyte.
Claim 4
Dependent Claim
29 words
A method as claimed in claim 2 in which the step of blowing gas into the electrolyte comprises blowing the gas in at sufficient velocity to agitate the electrolyte.
Claim 5
Dependent Claim
28 words
A method as claimed in claim 1 in which the compound is a compound taken from the group consisting of carbonates, oxides, sulphides and fluorides of the metal.
Claim 6
Dependent Claim
27 words
A method as claimed in claim 1 in which the anode is a metal taken from the group consisting of iron, copper, nickel, zinc, lead and cobalt.
Claim 7
Dependent Claim
30 words
A method as claimed in claim 1 in which the electrolyte is an aqueous solution of a material taken from the group consisting of haldies, nitrates, sulphates, acetates and oxalates.
Claim 8
Dependent Claim
53 words
A method as claimed in claim 1 in which said electrolyte is an electrolyte which can be electrolyzed to produce an oxidizing agent, and said step of providing a source of oxygen comprises placing at least one further pair of electrodes in said electrolyte for electrolyzing the electrolyte to produce the oxidizing agent.
Claim 9
Independent Claim
145 words
A method of making intimately admixed ferrites, comprising placing into an electrolyte having a pH of from 5 to 8.8 a pair of electrodes the anode of which is iron and the electrolyte being an electrolyte in which the iron from the anode will form iron hydroxide when electrolyzed with the iron anode, adding to the electrolyte a compound of at least one second metal which is to form the other of the metal oxide of the ferrite and which has a solubility in the electrolyte of less than 8 percent, providing in said electrolyte a source of oxygen, carrying out electrolysis of said electrolyte by means of said iron anode and the other electrode while agitating the electrolyte, and recovering the precipitated intimately admixed oxide of iron and the oxide of the at least one second metal as a ferrite of the two metals.
Claim 10
Independent Claim
145 words
A method of making intimately admixed ferrites, comprising placing into an electrolyte having a pH of from 5 to 8.8 a pair of electrodes the anode of which is iron and the electrolyte being an electrolyte in which the iron from the anode will form iron hydroxide when electrolyzed with the iron anode, adding to the electrolyte a compound of at least one second metal which is to form the other of the metal oxide of the ferrite and which has a solubility in the electrolyte of less than 8 percent, providing in said electrolyte a source of oxygen, carrying out electrolysis of said electrolyte by means of said iron anode and the other electrode while agitating the electrolyte, and recovering the precipitated intimately admixed oxide of iron and the oxide of the at least one second metal as a ferrite of the two metals.
Claim 11
Dependent Claim
28 words
A method as claimed in claim 8 in which the compound is a compound taken from the group consisting of carbonates, oxides, sulphides and fluorides of the metal.
Claim 12
Dependent Claim
29 words
A method as claimed in claim 9 in which the compound is a carbonate taken from the group consisting of barium carbonate, zinc carbonate, manganese carbonate and copper carbonate.
Claim 13
Dependent Claim
26 words
A method as claimed in claim 8 in which the step of providing a source of oxygen comprises blowing an oxygen containing gaS into the electrolyte.
Claim 14
Dependent Claim
29 words
A method as claimed in claim 11 in which the step of blowing gas into the electrolyte comprises blowing the gas in at sufficient velocity to agitate the electrolyte.
Claim 15
Dependent Claim
19 words
A method as claimed in claim 8 in which the pH of the electrolyte is from 6 to 6.4.
Claim 16
Dependent Claim
20 words
A method as claimed in claim 8 in which the solubility of said compound is from 0.0001 to 5 percent.
Claim 17
Dependent Claim
30 words
A method as claimed in claim 8 in which the electrolyte is an aqueous solution of a material taken from the group consisting of halides, nitrates, sulphates, acetates and oxalates.
Claim 18
Dependent Claim
53 words
A method as claimed in claim 8 in which said electrolyte is an electrolyte which can be electrolyzed to produce an oxidizing agent, and said step of providing a source of oxygen comprises placing at least one further pair of electrodes in said electrolyte for electrolyzing the electrolyte to produce the oxidizing agent.
Claim 19
Dependent Claim
30 words
A method as claimed in claim 16 in which the electrolyte includes potassium chloride, and said further pair of electrodes is operated at a current density to produce potassium hypochlorite.
Claim 20
Dependent Claim
39 words
A method as claimed in claim 8 in which said step of recovering the intimately admixed oxide of iron and the oxide of the other metal comprises heating the recovered precipitate to a temperature of from 800* to 1,100*C.
Claim 21
Dependent Claim
42 words
A method as claimed in claim 8 in which said step of recovering the intimately admixed oxide of iron and the oxide of the other metal comprises heating the recovered precipitate to a temperature of from 100* to 300*C to dry it.
Claim 22
Dependent Claim
57 words
A method as claimed in claim 8 in which the electrolyte is a 5 percent aqueous solution of potassium chloride and both electrodes are iron, the added compound is barium carbonate, and the steps of providing a source of oxygen and agitating the electrolyte comprise flowing air into the electrolyte at a rate sufficient to agitate it.
Claim 23
Dependent Claim
85 words
A method as claimed in claim 8 in which the electrolyte is a 5 percent aqueous solution of a mixture of potassium chloride and barium chloride, both electrodes are iron, the added compound is barium carbonate, and the steps of providing a source of oxygen comprises placing at least one further set of electrodes in the electrolyte and the anode of which is a platinum coated titanium electrode and the cathode of which is iron and electrolyzing the electrolyte with said further set of electrodes.
Claim 24
Dependent Claim
19 words
A method as claimed in claim 8 in which there is applied a permanent magnetic field during the electrolysis.
Claim 25
Dependent Claim
19 words
A method as claimed in claim 8 in which there is applied an alternating magnetic field during the electrolysis.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-03 | 1978-09-02 | 1979-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-03 | 1982-09-02 | 1983-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-03 | 1986-09-02 | 1987-03-04 | $7700.00 | Window Closed / Lapsed |