Wan-Chi Chang

Follow

Person

Changhua County, TW

People

Patents Grantslast 30 patents

Information Patent Grant
Spiral bevel gear forging apparatus
- Patent number 9,403,207
- Issue date Aug 2, 2016
- Metal Industries Research & Development Centre
- Can-Xun Chang
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Extrusion die device
- Patent number 8,240,181
- Issue date Aug 14, 2012
- Metal Industries Research & Development Centre
- Ping-Hsun Tsai
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...

Patents Applicationslast 30 patents

Information Patent Application
SPIRAL BEVEL GEAR FORGING APPARATUS
- Publication number 20160144422
- Publication date May 26, 2016
- Metal Industries Research & Development Centre
- Can-Xun Chang
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Application
EXTRUSION DIE DEVICE
- Publication number 20100132430
- Publication date Jun 3, 2010
- Ping-Hsun Tsai
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...