Masayuki Shichi

US Patent:

20060088621, Apr 27, 2006

Filed:

Oct 6, 2005

Appl. No.:

11/244048

Inventors:

Susumu Matsuoka - Nagoya-city, JP
Kenichi Ito - Chita-gun, JP
Teruyoshi Mori - Nagoya-city, JP
Masayuki Shichi - Mooresville NC, US
Takao Saito - Nagoya-city, JP

Assignee:

NGK INSULATORS, LTD. - Nagoya-city

International Classification:

B29C 47/12

US Classification:

42538200R, 264177120, 425464000

Abstract:

A die for extrusion-forming of ceramic formed bodies having a part coming in contact with extruded ceramic clay with a surface roughness (Ra) of 0.1 μm or more is disclosed. The die has excellent wear resistance and can remarkably reduce a defective body ratio.