Toshitada Shigemura

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Patents Grantslast 30 patents

Information Patent Grant
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
Acicular magnetic iron oxide particles and process for producing th...
- Patent number 5,648,014
- Issue date Jul 15, 1997
- Toda Kogyo Corporation
- Mitsuaki Hatatani
- G11 - INFORMATION STORAGE
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