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Inventor:
Ota; Yasutaka
Address:
Hatsukaichi, JP
No. of patents:
4
Patents:












Patent Number Title Of Patent Date Issued
5599378 Spindle-shaped magnetic iron based alloy particles and process for producing the same February 4, 1997
Disclosed herein are spindle-shaped magnetic iron based alloy particles containing at least one selected from the group consisting of Ni, Al, Si, P, Co, Mg, B and Zn, which have a particle length of 0.05 to 0.40 .mu.m, a crystallite size of 110 to 180 .ANG., a specific surface area of 30
5466306 Spindle-shaped magnetic iron based alloy particles November 14, 1995
Disclosed herein are spindle-shaped magnetic iron based alloy particles containing at least one selected from the group consisting of Ni, Al, Si, P, Co, Mg, B and Zn, which have a particle length of 0.05 to 0.40 .mu.m, a crystallite size of 110 to 180 .ANG., a specific surface area of 30
5156922 Acicular magnetic iron based alloy particles for magnetic recording and method of producing the October 20, 1992
Disclosed herein are acicular magnetic iron based alloy particles for magnetic recording, containing 1.5 to 10 mol % of B based on Fe (calculated as B) and 1.5 to 10 mol % of Co based on Fe (calculated as Co) in the vicinity of the surfaces of said particles and having a saturation m
5137783 Acicular magnetic metal particles containing iron as main ingredient and process for producing t August 11, 1992
Disclosed herein are acicular magnetic metal particles containing iron as the main ingredient the surfaces of which are coated with a polymer formed from at least one of silicone compounds represented by the following formula (I):wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.










 
 
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