SEMI-HARD MAGNETIC POWDER HAVING A HIGH VALUE AND METHOD FOR SYNTHESIZING SAME
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United States of America Patent
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Issued Date -
Dec 7, 2023
app pub date -
Aug 22, 2023
filing date -
Feb 24, 2021
priority date (Note) -
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status (Latency Note)
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Abstract
An object of the present invention is to provide a semi-hard magnetic white powder having characteristics suitable as a security pigment, such as the magnetic powder contained in magnetic inks used for MICR. The white powder includes base particles made of a semi-hard magnetic Alnico alloy, the base particles having a titanium oxide film and a metallic silver film in this order on the surfaces thereof.
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International Classification(s)
- C09D:COATING COMPOSITIONS, e.g. PAINTS, VARNISHES, LACQ....
- C09C:TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBRO....
- B22F:WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES F....
- H01F:MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF M....
- C21D:MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS....
- C22C:ALLOYS
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