Takefumi Nakako

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Hyogo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Rockbolts made of steel pipes
- Patent number 7,927,043
- Issue date Apr 19, 2011
- Nisshin Steel Co., Ltd.
- Tatsurou Iwasaki
- E21 - EARTH DRILLING MINING
Information Patent Grant
Rockbolt of high strength steel pipe and method of manufacturing th...
- Patent number 7,794,179
- Issue date Sep 14, 2010
- Nisshin Steel Co., Ltd.
- Takefumi Nakako
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...

Patents Applicationslast 30 patents

Information Patent Application
Lock Bolt of High Strength Steel Pipe and Method of Manufacturing t...
- Publication number 20080107488
- Publication date May 8, 2008
- Takefumi Nakako
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Application
Rockbolts made of steel pipes
- Publication number 20070081864
- Publication date Apr 12, 2007
- Nisshin Steel Co.,LTD
- Tatsurou Iwasaki
- E21 - EARTH DRILLING MINING