Title:
チゼル用鋼およびチゼル
Document Type and Number:
Japanese Patent JP6426442
Kind Code:
B2
Inventors:
Eiji Ryota
Akihiro Ochiai
Hitoshi Tsunekage
Yuko Nagaki
Akihiro Ochiai
Hitoshi Tsunekage
Yuko Nagaki
Application Number:
JP2014231712A
Publication Date:
November 21, 2018
Filing Date:
November 14, 2014
Export Citation:
Assignee:
KOMATSU LTD.
Sanyo Special Steel Co., Ltd.
Sanyo Special Steel Co., Ltd.
International Classes:
C22C38/00; B25D17/02; C22C38/26; C22C38/32; E21B1/26
Domestic Patent References:
| JP59025957A | ||||
| JP7062430A | ||||
| JP61166954A | ||||
| JP8041535A |
Foreign References:
| US20140127074 |
Attorney, Agent or Firm:
Shuhei Kitano