Weifeng DU

Person

Zhengzhou, CN

People

Patents Grantslast 30 patents

Information Patent Grant
Polycrystalline diamond compact with a raised parallelogram surface...
- Patent number D1068884
- Issue date Apr 1, 2025
- SF DIAMOND CO., LTD.
- Haijiang Fang
- D15 - Machines not elsewhere specified
Information Patent Grant
Polycrystalline diamond compact with a tripartite raised surface
- Patent number D1057780
- Issue date Jan 14, 2025
- SF DIAMOND CO., LTD.
- Haijiang Fang
- D15 - Machines not elsewhere specified
Information Patent Grant
Polycrystalline diamond compact with a raised surface and groove th...
- Patent number D1057779
- Issue date Jan 14, 2025
- SF DIAMOND CO., LTD.
- Haijiang Fang
- D15 - Machines not elsewhere specified
Information Patent Grant
Polycrystalline diamond compact table with polycrystalline diamond...
- Patent number 12,168,608
- Issue date Dec 17, 2024
- SF DIAMOND CO., LTD.
- Haijang Fang
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Polycrystalline diamond compact table with polycrystalline diamond...
- Patent number 12,103,853
- Issue date Oct 1, 2024
- SF DIAMOND CO., LTD.
- Haijang Fang
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Polycrystalline diamond compact with a tripartite raised surface
- Patent number D1026981
- Issue date May 14, 2024
- SF DIAMOND CO., LTD.
- Haijiang Fang
- D15 - Machines not elsewhere specified
Information Patent Grant
Polycrystalline diamond compact with a raised surface and groove th...
- Patent number D1026980
- Issue date May 14, 2024
- SF DIAMOND CO., LTD.
- Haijiang Fang
- D15 - Machines not elsewhere specified
Information Patent Grant
Polycrystalline diamond compact
- Patent number 11,873,684
- Issue date Jan 16, 2024
- SF DIAMOND CO., LTD.
- Dongpeng Zhao
- E21 - EARTH DRILLING MINING
Information Patent Grant
Polycrystalline diamond compact with a raised surface sloping to a...
- Patent number D1006073
- Issue date Nov 28, 2023
- SF DIAMOND CO., LTD.
- Haijiang Fang
- D15 - Machines not elsewhere specified
Information Patent Grant
Polycrystalline diamond compact with a raised triangular structure
- Patent number D1006074
- Issue date Nov 28, 2023
- SF DIAMOND CO., LTD.
- Haijiang Fang
- D15 - Machines not elsewhere specified
Information Patent Grant
Polycrystalline diamond compact table with polycrystalline diamond...
- Patent number 11,772,977
- Issue date Oct 3, 2023
- SF DIAMOND CO., LTD.
- Haijang Fang
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Polycrystalline diamond compact with a double-layer structure
- Patent number D997219
- Issue date Aug 29, 2023
- SF DIAMOND CO., LTD.
- Haijiang Fang
- D15 - Machines not elsewhere specified
Information Patent Grant
Polycrystalline diamond compact with a raised surface sloping to a...
- Patent number D996482
- Issue date Aug 22, 2023
- SF DIAMOND CO., LTD.
- Haijiang Fang
- D15 - Machines not elsewhere specified
Information Patent Grant
Polycrystalline diamond compact with a raised triangular structure
- Patent number D996483
- Issue date Aug 22, 2023
- SF DIAMOND CO., LTD.
- Haijiang Fang
- D15 - Machines not elsewhere specified
Information Patent Grant
Drill bit
- Patent number D989827
- Issue date Jun 20, 2023
- SF DIAMOND CO., LTD.
- Haijiang Fang
- D15 - Machines not elsewhere specified
Information Patent Grant
Drill bit
- Patent number D989826
- Issue date Jun 20, 2023
- SF DIAMOND CO., LTD.
- Haijiang Fang
- D15 - Machines not elsewhere specified
Information Patent Grant
Drill bit
- Patent number D982632
- Issue date Apr 4, 2023
- SF DIAMOND CO., LTD.
- Haijiang Fang
- D15 - Machines not elsewhere specified
Information Patent Grant
Drill bit
- Patent number D982631
- Issue date Apr 4, 2023
- SF DIAMOND CO., LTD.
- Haijiang Fang
- D15 - Machines not elsewhere specified
Information Patent Grant
Drill bit
- Patent number D982046
- Issue date Mar 28, 2023
- SF DIAMOND CO., LTD.
- Haijiang Fang
- D15 - Machines not elsewhere specified
Information Patent Grant
Polycrystalline diamond compact
- Patent number 11,377,910
- Issue date Jul 5, 2022
- SF DIAMOND CO., LTD.
- Dongpeng Zhao
- B24 - GRINDING POLISHING

Patents Applicationslast 30 patents

Information Patent Application
Polycrystalline Diamond Compact Table with Polycrystalline Diamond...
- Publication number 20250109025
- Publication date Apr 3, 2025
- SF DIAMOND CO., LTD.
- Haijang Fang
- C01 - INORGANIC CHEMISTRY
Information Patent Application
Polycrystalline Diamond Compact Table with Polycrystalline Diamond...
- Publication number 20250051170
- Publication date Feb 13, 2025
- SF DIAMOND CO., LTD.
- Haijang Fang
- C01 - INORGANIC CHEMISTRY
Information Patent Application
POLYCRYSTALLINE DIAMOND COMPACT TABLE WITH POLYCRYSTALLINE DIAMOND...
- Publication number 20230416098
- Publication date Dec 28, 2023
- SF DIAMOND CO., LTD.
- Haijang Fang
- C01 - INORGANIC CHEMISTRY
Information Patent Application
POLYCRYSTALLINE DIAMOND COMPACT TABLE WITH POLYCRYSTALLINE DIAMOND...
- Publication number 20230406711
- Publication date Dec 21, 2023
- SF DIAMOND CO., LTD.
- Haijang Fang
- E21 - EARTH DRILLING MINING
Information Patent Application
POLYCRYSTALLINE DIAMOND COMPACT
- Publication number 20210164296
- Publication date Jun 3, 2021
- SF DIAMOND CO., LTD.
- Dongpeng ZHAO
- E21 - EARTH DRILLING MINING
Information Patent Application
POLYCRYSTALLINE DIAMOND COMPACT TABLE WITH POLYCRYSTALLINE DIAMOND...
- Publication number 20210009426
- Publication date Jan 14, 2021
- SF DIAMOND CO., LTD.
- Haijang Fang
- C01 - INORGANIC CHEMISTRY
Information Patent Application
POLYCRYSTALLINE DIAMOND COMPACT
- Publication number 20190368276
- Publication date Dec 5, 2019
- SF DIAMOND CO., LTD.
- Dongpeng ZHAO
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
POLYCRYSTALLINE DIAMOND COMPACT
- Publication number 20190368277
- Publication date Dec 5, 2019
- SF DIAMOND CO., LTD.
- Dongpeng ZHAO
- B24 - GRINDING POLISHING
Information Patent Application
POLYCRYSTALLINE DIAMOND COMPACT
- Publication number 20190203539
- Publication date Jul 4, 2019
- SF DIAMOND CO., LTD.
- Dongpeng ZHAO
- E21 - EARTH DRILLING MINING

Person

Patents Grantslast 30 patents

Polycrystalline diamond compact with a raised parallelogram surface...

Polycrystalline diamond compact with a tripartite raised surface

Polycrystalline diamond compact with a raised surface and groove th...

Polycrystalline diamond compact table with polycrystalline diamond...

Polycrystalline diamond compact table with polycrystalline diamond...

Polycrystalline diamond compact with a tripartite raised surface

Polycrystalline diamond compact with a raised surface and groove th...

Polycrystalline diamond compact

Polycrystalline diamond compact with a raised surface sloping to a...

Polycrystalline diamond compact with a raised triangular structure

Polycrystalline diamond compact table with polycrystalline diamond...

Polycrystalline diamond compact with a double-layer structure

Polycrystalline diamond compact with a raised surface sloping to a...

Polycrystalline diamond compact with a raised triangular structure

Drill bit

Drill bit

Drill bit

Drill bit

Drill bit

Polycrystalline diamond compact

Patents Applicationslast 30 patents

Polycrystalline Diamond Compact Table with Polycrystalline Diamond...

Polycrystalline Diamond Compact Table with Polycrystalline Diamond...

POLYCRYSTALLINE DIAMOND COMPACT TABLE WITH POLYCRYSTALLINE DIAMOND...

POLYCRYSTALLINE DIAMOND COMPACT TABLE WITH POLYCRYSTALLINE DIAMOND...

POLYCRYSTALLINE DIAMOND COMPACT

POLYCRYSTALLINE DIAMOND COMPACT TABLE WITH POLYCRYSTALLINE DIAMOND...

POLYCRYSTALLINE DIAMOND COMPACT

POLYCRYSTALLINE DIAMOND COMPACT

POLYCRYSTALLINE DIAMOND COMPACT