Chengzhong Chen

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Suzhou, CN

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Patents Grantslast 30 patents

Information Patent Grant
Power tool
- Patent number 8,235,139
- Issue date Aug 7, 2012
- Positec Power Tools (Suzhou) Co., Ltd.
- Chengzhong Chen
- B24 - GRINDING POLISHING
Information Patent Grant
Variable speed tool and variable speed control method
- Patent number 7,900,715
- Issue date Mar 8, 2011
- Positec Power Tools (Suzhou) Co., Ltd.
- Chengzhong Chen
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Power tool having control system for changing rotational speed of o...
- Patent number 7,882,899
- Issue date Feb 8, 2011
- Positec Power Tools (Suzhou) Co., Ltd.
- Gianni Borinato
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Power tool with signal generator
- Patent number 7,882,900
- Issue date Feb 8, 2011
- Positec Power Tools (Suzhou) Co., Ltd.
- Gianni Borinato
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Dual plate sander
- Patent number 7,195,547
- Issue date Mar 27, 2007
- Positec Power Tools (Suzhou) Co., Ltd.
- Chengzhong Chen
- B24 - GRINDING POLISHING

Patents Applicationslast 30 patents

Information Patent Application
POWER TOOL
- Publication number 20100078187
- Publication date Apr 1, 2010
- Chengzhong Chen
- B27 - WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL NAILING OR STAPLING MACH...
Information Patent Application
VARIABLE SPEED TOOL AND VARIABLE SPEED CONTROL METHOD
- Publication number 20090277658
- Publication date Nov 12, 2009
- Positec Power Tools (Suzhou) Co., Ltd
- Chengzhong Chen
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Application
POWER TOOL
- Publication number 20090071671
- Publication date Mar 19, 2009
- Positec Power Tools (Suzhou) Co., Ltd
- Hongfeng Zhong
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Application
POWER TOOL WITH SIGNAL GENERATOR
- Publication number 20090071673
- Publication date Mar 19, 2009
- Positec Power Tools (Suzhou) Co., Ltd
- Hongfeng Zhong
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Application
Dual plate sander
- Publication number 20060270327
- Publication date Nov 30, 2006
- Chengzhong Chen
- B24 - GRINDING POLISHING