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Tseng-Jen Cheng
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Kaohsiung County, TW
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last 30 patents
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Patent Grant
Metal object and manufacturing method thereof having solid lubricat...
Patent number
11,759,858
Issue date
Sep 19, 2023
Metal Industries Research & Development Centre
Tseng-Jen Cheng
B22 - CASTING POWDER METALLURGY
Patents Applications
last 30 patents
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Patent Application
METAL OBJECT AND MANUFACTURING METHOD THEREOF HAVING SOLID LUBRICAT...
Publication number
20210170482
Publication date
Jun 10, 2021
Metal Industries Research & Development Centre
TSENG-JEN CHENG
B22 - CASTING POWDER METALLURGY
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Patent Application
METHOD FOR FORMING A GEAR
Publication number
20100299925
Publication date
Dec 2, 2010
Chih-Hao LIN
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR