Katsumi Yamashita

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Patents Grantslast 30 patents

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Cobalt-coated acicular magnetic iron oxide particles
- Patent number 5,968,405
- Issue date Oct 19, 1999
- Toda Kogyo Corporation
- Minoru Yamasaki
- G11 - INFORMATION STORAGE
Information Patent Grant
Process for producing co-coated acicular magnetite particles
- Patent number 5,650,194
- Issue date Jul 22, 1997
- Toda Kogyo Corporation
- Minoru Yamasaki
- G11 - INFORMATION STORAGE
Information Patent Grant
Co-coated acicular magnetite particles and process for producing th...
- Patent number 5,626,962
- Issue date May 6, 1997
- Toda Kogyo Corporation
- Minoru Yamasaki
- G11 - INFORMATION STORAGE
Information Patent Grant
Granulated particles for magnetic particles for magnetic recording,...
- Patent number 5,531,922
- Issue date Jul 2, 1996
- Toda Kogyo Corporation
- Kenji Okinaka
- G11 - INFORMATION STORAGE
Information Patent Grant
Process for producing acicular goethite particles and acicular magn...
- Patent number 5,399,278
- Issue date Mar 21, 1995
- Toda Kogyo Corp.
- Katsumi Yamashita
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Acicular magnetic iron oxide particles
- Patent number 5,294,492
- Issue date Mar 15, 1994
- Toda Kogyo Corp.
- Hiroshi Oka
- G11 - INFORMATION STORAGE