Zhihua CAO

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Hunan, CN

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Patents Grantslast 30 patents

Information Patent Grant
Alloy drill and manufacturing method thereof
- Patent number 10,697,048
- Issue date Jun 30, 2020
- SEED TECHNOLOGIES CORP., LTD.
- Bin Liu
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Composite hard-surface material and preparation method therefor
- Patent number 10,166,636
- Issue date Jan 1, 2019
- SEED TECHNOLOGIES CORP., LTD.
- Cankun Chen
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR

Patents Applicationslast 30 patents

Information Patent Application
ALLOY DRILL AND MANUFACTURING METHOD THEREOF
- Publication number 20180305790
- Publication date Oct 25, 2018
- SEED TECHNOLOGIES CORP., LTD.
- Bin LIU
- E21 - EARTH DRILLING MINING
Information Patent Application
Composite Hard-Surface Material and Preparation Method Therefor
- Publication number 20170368645
- Publication date Dec 28, 2017
- SEED TECHNOLOGIES CORP., LTD.
- Cankun CHEN
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...