Yoshikazu Ohira

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Dynamic random access memory with improved contact arrangements
- Patent number 6,686,619
- Issue date Feb 3, 2004
- Hitachi, Ltd.
- Yoshitaka Nakamura
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Semiconductor integrated circuit device and method of manufacturing...
- Patent number 6,329,681
- Issue date Dec 11, 2001
- Yoshitaka Nakamura
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Cleaning liquid for semiconductor devices
- Patent number 5,972,862
- Issue date Oct 26, 1999
- Mitsubishi Gas Chemical
- Yoshimi Torii
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Patents Applicationslast 30 patents

Information Patent Application
Dynamic random access memory with improved contact arrangements
- Publication number 20030211673
- Publication date Nov 13, 2003
- Yoshitaka Nakamura
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Semiconductor integrated circuit device and method of manufacturing...
- Publication number 20020123190
- Publication date Sep 5, 2002
- Yoshitaka Nakamura
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Semiconductor integrated circuit device and method of manufacturing...
- Publication number 20020047153
- Publication date Apr 25, 2002
- Yoshitaka Nakamura
- H01 - BASIC ELECTRIC ELEMENTS