Invention Grant
- Patent Title: Magnetic powder, method for production thereof, and magnetic recording medium
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Application No.: US16895648Application Date: 2020-06-08
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Publication No.: US11355270B2Publication Date: 2022-06-07
- Inventor: Masaru Terakawa , Minoru Yamaga
- Applicant: SONY CORPORATION
- Applicant Address: JP Tokyo
- Assignee: SONY CORPORATION
- Current Assignee: SONY CORPORATION
- Current Assignee Address: JP Tokyo
- Agency: Chip Law Group
- Priority: JP2014-252176 20141212
- Main IPC: H01F1/147
- IPC: H01F1/147 ; G11B5/712 ; H01F1/09 ; B05D3/02 ; B22F9/22 ; G11B5/706 ; B22F1/16 ; B22F1/17 ; B22F1/054 ; B22F1/142 ; G11B5/708 ; G11B5/842 ; G11B5/714 ; G11B5/702
Abstract:
A method for producing a magnetic powder includes performing a reduction treatment on the surface of particles including a hard magnetic material to form core-shell particles each having a shell portion including a soft magnetic material.
Public/Granted literature
- US20200303104A1 MAGNETIC POWDER, METHOD FOR PRODUCTION THEREOF, AND MAGNETIC RECORDING MEDIUM Public/Granted day:2020-09-24
Information query
