Takehisa Yoshikawa

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Yokohama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method for producing apertures in a diffuse reflector layer having...
- Patent number 7,889,310
- Issue date Feb 15, 2011
- Hitachi Chemical Company, Ltd.
- Takehisa Yoshikawa
- G02 - OPTICS
Information Patent Grant
Microlens array, a method for making a transfer master pattern for...
- Patent number 7,009,774
- Issue date Mar 7, 2006
- Hitachi, Ltd.
- Takehisa Yoshikawa
- G02 - OPTICS
Information Patent Grant
MICROLENS ARRAY, A METHOD FOR MAKING A TRANSFER MASTER PATTERN FOR...
- Patent number 6,898,015
- Issue date May 24, 2005
- Hitachi, Ltd.
- Takehisa Yoshikawa
- G02 - OPTICS
Information Patent Grant
MICROLENS ARRAY, A METHOD FOR MAKING A TRANSFER MASTER PATTERN FOR...
- Patent number 6,654,176
- Issue date Nov 25, 2003
- Hitachi, Ltd.
- Takehisa Yoshikawa
- G02 - OPTICS
Information Patent Grant
Cathode-ray tube and flat electrode of electronic gun and productio...
- Patent number 6,538,385
- Issue date Mar 25, 2003
- Hitachi, Ltd.
- Osami Kanetoo
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
High-rigidity sheet-metal structure
- Patent number 5,564,247
- Issue date Oct 15, 1996
- Hitachi, Ltd.
- Keiichi Nakamura
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...

Patents Applicationslast 30 patents

Information Patent Application
Working Abnormality Detecting Device and Working Abnormality Detect...
- Publication number 20140123740
- Publication date May 8, 2014
- Hitachi, Ltd
- Takehisa Yoshikawa
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Application
METHOD FOR MANUFACTURING REFLECTIVE FILM WITH OPENING AND LIQUID CR...
- Publication number 20070177079
- Publication date Aug 2, 2007
- Takehisa Yoshikawa
- G02 - OPTICS
Information Patent Application
Microlens array, a method for making a transfer master pattern for...
- Publication number 20050041295
- Publication date Feb 24, 2005
- Takehisa Yoshikawa
- G02 - OPTICS
Information Patent Application
Microlens array, a method for making a transfer master pattern for...
- Publication number 20040061946
- Publication date Apr 1, 2004
- Takehisa Yoshikawa
- G02 - OPTICS
Information Patent Application
Microlens array, a method for making a transfer master pattern for...
- Publication number 20030039035
- Publication date Feb 27, 2003
- Takehisa Yoshikawa
- G02 - OPTICS
Information Patent Application
Cathode-ray tube and flat electrode of electronic gun and productio...
- Publication number 20020047528
- Publication date Apr 25, 2002
- Osami Kanetoo
- H01 - BASIC ELECTRIC ELEMENTS