Hongzhuan Zheng

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Zhengzhou City, Henan Province 450002, CN

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Patents Grantslast 30 patents

Information Patent Grant
Rolling mill with roll deflection bi-dimensionally controlled
- Patent number 6,571,592
- Issue date Jun 3, 2003
- Hongzhuan Zheng
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Rolling mill with roll deflection bi-dimensionally controlled
- Patent number 6,260,397
- Issue date Jul 17, 2001
- Hongzhuan Zheng
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...

Patents Applicationslast 30 patents

Information Patent Application
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- Publication number 20100044492
- Publication date Feb 25, 2010
- Hongzhuan Zheng
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Application
Lubricating Oil Balance Equipment and One Shaft Equipped with the Same
- Publication number 20090000875
- Publication date Jan 1, 2009
- Hongzhuan Zheng
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...