WENZHOU HONGFENG ELECTRICAL ALLOY CO., LTD.

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Yueqing, Zhejiang, CN

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Patents Grantslast 30 patents

Information Patent Grant
Methods for preparing alternating arrangement silvercopper lateral...
- Patent number 11,000,889
- Issue date May 11, 2021
- WENZHOU HONGFENG ELECTRICAL ALLOY CO., LTD
- Xiao Chen
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Preparation method of rapid composite of long silver-graphite elect...
- Patent number 10,818,447
- Issue date Oct 27, 2020
- WENZHOU HONGFENG ELECTRICAL ALLOY CO., LTD
- Xiao Chen
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
Preparation method of electrical contact material
- Patent number 10,099,286
- Issue date Oct 16, 2018
- Wenzhou Hongfeng Electrical Alloy Co., Ltd.
- Lesheng Chen
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Method of preparing silver-based oxide electrical contact materials...
- Patent number 9,761,342
- Issue date Sep 12, 2017
- Wenzhou Hongfeng Electrical Alloy Co., Ltd.
- Lesheng Chen
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Method of preparing silver-based electrical contact materials with...
- Patent number 9,437,998
- Issue date Sep 6, 2016
- Wenzhou Hongfeng Electrical Alloy Co., Ltd.
- Lesheng Chen
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Method of preparing Ag-based oxide contact materials with direction...
- Patent number 9,293,270
- Issue date Mar 22, 2016
- Wenzhou Hongfeng Electrical Alloy Co., Ltd.
- Lesheng Chen
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Method of preparing silver-based electrical contact materials with...
- Patent number 9,287,018
- Issue date Mar 15, 2016
- Wenzhou Hongfeng Electrical Alloy Co., Ltd.
- Lesheng Chen
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...

Patents Applicationslast 30 patents

Information Patent Application
Preparation Method of Rapid Composite of Long Silver-graphite Elect...
- Publication number 20200294734
- Publication date Sep 17, 2020
- WENZHOU HONGFENG ELECTRICAL ALLOY CO., LTD
- Xiao CHEN
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
METHODS FOR PREPARING ALTERNATING ARRANGEMENT SILVERCOPPER LATERAL...
- Publication number 20200290103
- Publication date Sep 17, 2020
- WENZHOU HONGFENG ELECTRICAL ALLOY CO., LTD
- Xiao CHEN
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Application
Preparation Method of Electrical Contact Material
- Publication number 20160074935
- Publication date Mar 17, 2016
- WENZHOU HONGFENG ELECTRICAL ALLOY CO., LTD.
- Lesheng Chen
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Application
Method of preparing Ag- based oxide contact materials with directio...
- Publication number 20130266791
- Publication date Oct 10, 2013
- WENZHOU HONGFENG ELECTRICAL ALLOY CO., LTD.
- Lesheng Chen
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...

WENZHOU HONGFENG ELECTRICAL ALLOY CO., LTD.

Organization

Patents Grantslast 30 patents

Methods for preparing alternating arrangement silvercopper lateral...

Preparation method of rapid composite of long silver-graphite elect...

Preparation method of electrical contact material

Method of preparing silver-based oxide electrical contact materials...

Method of preparing silver-based electrical contact materials with...

Method of preparing Ag-based oxide contact materials with direction...

Method of preparing silver-based electrical contact materials with...

Patents Applicationslast 30 patents

Preparation Method of Rapid Composite of Long Silver-graphite Elect...

METHODS FOR PREPARING ALTERNATING ARRANGEMENT SILVERCOPPER LATERAL...

Preparation Method of Electrical Contact Material

Method of preparing Ag- based oxide contact materials with directio...

Trademarklast 30 trademarks