Patent EP0259194A2 successfully refreshed from Google Patents.
EP0259194A2
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Forming ferrite film
Assignee: Nippon Paint Co Ltd
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Filing: 1987-09-07
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Granted: —
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Expires: 2007-09-07
Abstract
Abstract A method of forming a ferrite film on a particulate and/or fibrous substrate, which comprises adding an oxidising agent to a deoxidized solution or dispersion containing ferrous ions and the substrate.
Inventors
- 👤 Masao Oishi
- 👤 Takao Saito
- 👤 Katsukiyo Ishikawa
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 02:50
CPC Classifications
H; H01; H01F; H01F41/00; H01F41/14; H01F41/24; H01F10/00; H01F10/08; H01F10/10; H01F10/18; H01F10/20
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
31 words
A method of forming a ferrite film on a particulate and/or fibrous substrate, which comprises adding an oxidising agent to a deoxidized solution or dispersion containing ferrous ions and the substrate.
Claim 2
Independent Claim
31 words
A method of forming a ferrite film on a particulate and/or fibrous substrate, which comprises adding an oxidising agent to a deoxidized solution or dispersion containing ferrous ions and the substrate.
Claim 3
Dependent Claim
24 words
A method according to claim 1, wherein the substrate is in the form of particles having a mean diameter of less than 100 µm.
Claim 4
Dependent Claim
27 words
A method according to claim 1 or claim 2, wherein the substrate is in the form of particles of a resin, organic pigment, metal oxide or ceramic.
Claim 5
Dependent Claim
23 words
A method according to claim 1, wherein the substrate is in the form of fibres having a diameter of less than 100 µm.
Claim 6
Dependent Claim
22 words
A method according to claim 1 or claim 4, wherein the substrate is in the form of natural, synthetic or inorganic fibres.
Claim 7
Independent Claim
53 words
A method according to any preceding claim, wherein the solution or dispersion contains, in addition to the ferrous ions, at least one ion species selected from Zn²⁺, Co²⁺, Co³⁺, Ni²⁺, Mn²⁺, Mn³⁺, Fe³⁺, Cu²⁺, V³⁺, V⁴⁺, V⁵⁺, Sb⁵⁺, Li⁺, Mo⁴⁺, No⁵⁺, Ti⁴⁺, Pd²⁺, Mg²⁺, Al³⁺, Si⁴⁺, Cr³⁺, Sn²⁺, Sn⁴⁺, Ca²⁺, Cd²⁺ and In³⁺.
Claim 8
Independent Claim
23 words
A method according to any preceding claim, wherein the ferrous ions are in the form of ferrous chloride, ferrous sulfate or ferrous acetate.
Claim 9
Independent Claim
24 words
A method according to any preceding claim, wherein the oxidising agent is nitrite, nitrate, hydrogen peroxide, organic peroxide, perchlorate or water containing dissolved oxygen.
References Cited (Backward Citations)
No citation records indexed.
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