View source for US Patent Application 18353428. MAGNETIC POWDER FOR RADIO WAVE ABSORBER AND MANUFACTURING METHOD THEREFOR, RADIO WAVE ABSORBER, RADIO WAVE ABSORBING ARTICLE, AND RADIO WAVE ABSORBING COMPOSITION simplified abstract

=MAGNETIC POWDER FOR RADIO WAVE ABSORBER AND MANUFACTURING METHOD THEREFOR, RADIO WAVE ABSORBER, RADIO WAVE ABSORBING ARTICLE, AND RADIO WAVE ABSORBING COMPOSITION=


==Organization Name==

[[:Category:FUJIFILM Corporation|FUJIFILM Corporation]]


[[Category:FUJIFILM Corporation]]

==Inventor(s)==

[[:Category:Kiyotaka Fukagawa of Minamiashigara-shi (JP)|Kiyotaka Fukagawa of Minamiashigara-shi (JP)]][[Category:Kiyotaka Fukagawa of Minamiashigara-shi (JP)]]

==MAGNETIC POWDER FOR RADIO WAVE ABSORBER AND MANUFACTURING METHOD THEREFOR, RADIO WAVE ABSORBER, RADIO WAVE ABSORBING ARTICLE, AND RADIO WAVE ABSORBING COMPOSITION - A simplified explanation of the abstract==


This abstract first appeared for US patent application 18353428 titled 'MAGNETIC POWDER FOR RADIO WAVE ABSORBER AND MANUFACTURING METHOD THEREFOR, RADIO WAVE ABSORBER, RADIO WAVE ABSORBING ARTICLE, AND RADIO WAVE ABSORBING COMPOSITION

==Simplified Explanation==

The patent application describes a magnetic powder used for a radio wave absorber.
* The powder is made of a hexagonal ferrite with a specific composition.
* The powder particles have a region called B on their surface.
* In region B, the content of A atom divided by the content of Al atom satisfies a specific range.
* The total content of A atom and Al atom in region B divided by the total content in the entire powder also satisfies a specific range.
* Region B appears as a bright region with a certain size in an image.
* A represents atoms selected from Sr, Ba, Ca, and Pb, and x is a specific value within a range.


==Original Abstract Submitted==

The magnetic powder for a radio wave absorber is a powder of a hexagonal ferrite having a composition represented by Formula 1, a region B is present on the particle surface of the powder, and Expression 2: 0.3≤content of A atom in region B/content of Al atom in region B≤23.0 and Expression 3: 1.2≤total of content of A atom and content of Al atom in region B/total of content of A atom and content of Al atom in entire powder≤2.5 are satisfied. The region B is a region that is observed as a bright region having a long side diameter of 0.1 μm to 0.6 μm in an image subjected to binarization processing. A represents one or more kinds of atoms (A atom) selected from the group consisting of Sr, Ba, Ca, and Pb, and x satisfies 0.10≤x≤5.00.



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