JI MA

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Shenzhen City, CN

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Patents Grantslast 30 patents

Information Patent Grant
Waterproof structure and mobile phone using the same
- Patent number 10,320,438
- Issue date Jun 11, 2019
- Power Idea Technology (Shenzhen) Co., Ltd.
- Zhen-Yu Guo
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Waterproof presskey structure and waterproof mobile phone utilizing...
- Patent number 9,866,659
- Issue date Jan 9, 2018
- Power Idea Technology (Shenzhen) Co., Ltd.
- Ji-Dong Ma
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Tri-proof structure and mobile phone using the same
- Patent number 9,794,383
- Issue date Oct 17, 2017
- Power Idea Technology (Shenzhen) Co., Ltd.
- Ji-Dong Ma
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method of mounting electronic components on printed circuit boards
- Patent number 8,011,561
- Issue date Sep 6, 2011
- Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd.
- Ji Ma
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR

Patents Applicationslast 30 patents

Information Patent Application
WATERPROOF STRUCTURE AND MOBILE PHONE USING THE SAME
- Publication number 20180062685
- Publication date Mar 1, 2018
- Power Idea Technology (Shenzhen) Co., Ltd.
- ZHEN-YU GUO
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
WATERPROOF PRESSKEY STRUCTURE AND WATERPROOF MOBILE PHONE UTILIZING...
- Publication number 20170064053
- Publication date Mar 2, 2017
- Power Idea Technology (Shenzhen) Co., Ltd.
- JI-DONG MA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
TRI-PROOF STRUCTURE AND MOBILE PHONE USING THE SAME
- Publication number 20160381193
- Publication date Dec 29, 2016
- Power Idea Technology (Shenzhen) Co., Ltd.
- JI-DONG MA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
METHOD OF MOUNTING ELECTRONIC COMPONENTS ON PRINTED CIRCUIT BOARDS
- Publication number 20110167627
- Publication date Jul 14, 2011
- HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD
- JI MA
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...