Zheng Qing Yang

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Kowloon, HK

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Patents Grantslast 30 patents

Information Patent Grant
Heat treatment apparatus and method of using same
- Patent number 6,441,348
- Issue date Aug 27, 2002
- Raymond Industrial Limited
- Zheng Qing Yang
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Heated roller and heated roller assembly
- Patent number 6,310,322
- Issue date Oct 30, 2001
- Raymond Industrial Limited
- Zheng Qing Yang
- A45 - HAND OR TRAVELLING ARTICLES

Patents Applicationslast 30 patents

Information Patent Application
HEAT TREATMENT APPARATUS AND METHOD OF USING SAME
- Publication number 20020088791
- Publication date Jul 11, 2002
- Zheng Qing Yang
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE