Yuichi Kokaku

Person

Yokohama, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Thin film magnetic disc and method of manufacturing the disc
- Patent number 5,958,542
- Issue date Sep 28, 1999
- Hitachi, Ltd.
- Mitsuyoshi Ootake
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Plasma processing method and apparatus
- Patent number 5,651,867
- Issue date Jul 29, 1997
- Hitachi, Ltd.
- Yuichi Kokaku
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Recording medium
- Patent number 5,409,738
- Issue date Apr 25, 1995
- Hitachi, Ltd.
- Satoshi Matsunuma
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Grant
Plasma surface treatment method and apparatus
- Patent number 5,300,189
- Issue date Apr 5, 1994
- Hitachi, Ltd.
- Yuichi Kokaku
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Process for producing a magnetic disk having a metal containing har...
- Patent number 5,275,850
- Issue date Jan 4, 1994
- Hitachi, Ltd.
- Makoto Kitoh
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Magnetic recording medium which includes a protective layer, an adh...
- Patent number 5,104,709
- Issue date Apr 14, 1992
- Hitachi, Ltd.
- Yuichi Kokaku
- G11 - INFORMATION STORAGE
Information Patent Grant
Method for producing an optical recording medium
- Patent number 5,073,243
- Issue date Dec 17, 1991
- Hitachi Maxwell, Ltd.
- Akira Gotoh
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical recording medium and production method thereof
- Patent number 4,908,250
- Issue date Mar 13, 1990
- Hitachi Maxell, Ltd.
- Akira Gotoh
- G11 - INFORMATION STORAGE

Yuichi Kokaku

Person

Patents Grantslast 30 patents

Thin film magnetic disc and method of manufacturing the disc

Plasma processing method and apparatus

Recording medium

Plasma surface treatment method and apparatus

Process for producing a magnetic disk having a metal containing har...

Magnetic recording medium which includes a protective layer, an adh...

Method for producing an optical recording medium

Optical recording medium and production method thereof