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Chengdu, CN
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Patents Grants
last 30 patents
Information
Patent Grant
Bn) drilling tools made of wurtzite boron nitride (W-BN)
Patent number
11,866,372
Issue date
Jan 9, 2024
Saudi Arabian Oil Company
Guodong Zhan
B24 - GRINDING POLISHING
Information
Patent Grant
Preparation of bulk superhard B-C-N nanocomposite compact
Patent number
7,938,997
Issue date
May 10, 2011
Los Alamos National Security, LLC
Yusheng Zhao
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Patents Applications
last 30 patents
Information
Patent Application
Producing Drill Bits Using Catalyst-free PDC Cutters
Publication number
20230212914
Publication date
Jul 6, 2023
Saudi Arabian Oil Company
Guodong Zhan
E21 - EARTH DRILLING MINING
Information
Patent Application
PRODUCING POLYCRYSTALLINE DIAMOND COMPACT (PDC) DRILL BITS WITH CAT...
Publication number
20230211414
Publication date
Jul 6, 2023
Saudi Arabian Oil Company
Guodong Zhan
B22 - CASTING POWDER METALLURGY
Information
Patent Application
FABRICATION OF DOWNHOLE DRILLING TOOLS
Publication number
20220250989
Publication date
Aug 11, 2022
Saudi Arabian Oil Company
Guodong Zhan
E21 - EARTH DRILLING MINING
Information
Patent Application
Producing Catalyst-free PDC Cutters
Publication number
20210370396
Publication date
Dec 2, 2021
Saudi Arabian Oil Company
Guodong Zhan
B22 - CASTING POWDER METALLURGY
Information
Patent Application
DRILLING TOOLS MADE OF WURTZITE BORON NITRIDE (W-BN)
Publication number
20210371345
Publication date
Dec 2, 2021
Saudi Arabian Oil Company
Guodong Zhan
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Application
Preparation of bulk superhard B-C-N nanocomposite compact
Publication number
20100237547
Publication date
Sep 23, 2010
Yusheng Zhao
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES