Yasumichi Tokuoka

Follow

Person

Tokyo, JA

People

Patents Grantslast 30 patents

Information Patent Grant
Method of recovery of ferromagnetic metal or alloy particles by usi...
- Patent number 4,097,313
- Issue date May 27, 1978
- TDK Electronics Co., Ltd.
- Yasumichi Tokuoka
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Magnetic powder material comprising iron oxide particles with a cop...
- Patent number 4,069,367
- Issue date Jan 17, 1978
- TDK Electronics Company, Limited
- Shinji Umeki
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Method of making powdered magnetic iron oxide material
- Patent number 4,067,755
- Issue date Jan 10, 1978
- TDK Electronics Company, Ltd.
- Shinji Umeki
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic powder
- Patent number 4,010,310
- Issue date Mar 1, 1977
- TDK Electronics Company, Limited
- Yuichi Kubota
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording medium and preparation thereof
- Patent number 3,953,656
- Issue date Apr 27, 1976
- TDK Electronic Company
- Yasumichi Tokuoka
- G11 - INFORMATION STORAGE