Shinji Umeki

Person

Saku-shi, Nagano-ken, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Method for manufacturing magnetic recording medium
- Patent number 4,451,502
- Issue date May 29, 1984
- Kazuo Takada
- G11 - INFORMATION STORAGE
Information Patent Grant
Process for producing magnetic powder having high coercive force
- Patent number 4,363,831
- Issue date Dec 14, 1982
- TDK Electronics Co., Ltd.
- Shinji Umeki
- G11 - INFORMATION STORAGE
Information Patent Grant
Process for producing hydrated iron oxide having silicon and phosph...
- Patent number 4,323,464
- Issue date Apr 6, 1982
- TDK Electronics Co., Ltd.
- Shinji Umeki
- G11 - INFORMATION STORAGE
Information Patent Grant
Process for producing magnetic powder having high coercive force
- Patent number 4,321,302
- Issue date Mar 23, 1982
- TDK Electronics Co., Ltd.
- Shinji Umeki
- G11 - INFORMATION STORAGE
Information Patent Grant
Process for producing iron oxide containing magnetite
- Patent number 4,311,684
- Issue date Jan 19, 1982
- TDK Electronics Co., Ltd.
- Shinji Umeki
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Process for producing iron oxide
- Patent number 4,305,921
- Issue date Dec 15, 1981
- TDK Electronics Co., Ltd.
- Shinji Umeki
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Magnetic recording medium
- Patent number 4,302,510
- Issue date Nov 24, 1981
- TDK Electronics Co., Ltd.
- Shinji Umeki
- G11 - INFORMATION STORAGE
Information Patent Grant
Process for producing acicular goethite
- Patent number 4,255,409
- Issue date Mar 10, 1981
- TDK Electronics Company Limited
- Toshihiro Hamabata
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Process for producing acicular goethite
- Patent number 4,251,504
- Issue date Feb 17, 1981
- TDK Electronics, Co. Ltd.
- Toshihiro Hamabata
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Magnetic recording medium and method of preparing
- Patent number 4,112,184
- Issue date Sep 5, 1978
- TDK Electronic Company
- Shinji Umeki
- G11 - INFORMATION STORAGE

Shinji Umeki

Person

Patents Grantslast 30 patents

Method for manufacturing magnetic recording medium

Process for producing magnetic powder having high coercive force

Process for producing hydrated iron oxide having silicon and phosph...

Process for producing magnetic powder having high coercive force

Process for producing iron oxide containing magnetite

Process for producing iron oxide

Magnetic recording medium

Process for producing acicular goethite

Process for producing acicular goethite

Magnetic recording medium and method of preparing