Tsutomu Hirota

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Gifu-city, JP

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Patents Grantslast 30 patents

Information Patent Grant
Equipment and method for manufacturing honeycomb structural body
- Patent number 7,097,798
- Issue date Aug 29, 2006
- NGK Insulators, Ltd.
- Takeyuki Ishii
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Grant
Apparatus for coating outer peripheral surface of columnar structur...
- Patent number 5,749,970
- Issue date May 12, 1998
- NGK Insulators, Ltd.
- Ken Fukuta
- B28 - WORKING CEMENT, CLAY, OR STONE

Patents Applicationslast 30 patents

Information Patent Application
Equipment and method for manufacturing honeycomb structural body
- Publication number 20040194427
- Publication date Oct 7, 2004
- Takeyuki Ishii
- B28 - WORKING CEMENT, CLAY, OR STONE