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Top 20 Key Players companies in Expansive
by Most Patent Filings in the China in 2020

The Expansive top 20 is Discovery PatSnap’ annual ranking of the top 20 Most Patent Filings Expansive Key Players in the China. Discovery has identified the top key players, startups & unicorns, fast-growings, news entrants in 2020, ranking from differnt perspectives, including patent filing intensity, academic research capability, news media heat. The company list is generated from various data types.
In mathematics, the notion of expansivity formalizes the notion of points moving away from one another under the action of an iterated function. The idea of expansivity is fairly rigid, as the definition of positive expansivity, below, as well as the Schwarz-Ahlfors-Pick theorem demonstrate.
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Company Name
Region
Tech Topics
Total
1
Sobute New Materials Co., Ltd.
Superplasticizer,Cement,Chemical engineering,
...[+1]
Patent: 3
2
Nanjing Bote New Materials Co. Ltd.
Patent: 2
3
Lite-On Technology Corp.
Computer hardware,Software,Solid-state drive,
...[+2]
Patent: 1
4
Tongling Nonferrous Metals Group Co., Ltd.
Smelting,Mining engineering,Natural resource management,
...[+2]
Patent: 1
5
Hisense Visual Technology Co., Ltd.
Television set,Electronics,Visual technology,
...[+2]
Patent: 1
6
Wuhan Iron & Steel Group Corp.
Silicon,Irone,Mining engineering,
...[+2]
Patent: 1
7
Chengdu Reliance Electric Co. Ltd.
Automation,Mechanical engineering,Manufacturing engineering,
...[+1]
Patent: 1
8
Haining Kasen Leather Co., Ltd.
Interior design
Patent: 1
9
Taiyuan Aviation Instrument Co. Ltd.
Patent: 1
10
Dongguan Xionglin New Material Technology Co. Ltd.
Material technology,Chemical engineering
Patent: 1
11
China Zhongtie Major Bridge Engineering Group Co. Ltd.
Patent: 1
12
Anhui Shuian Construction Group Co. Ltd.
Patent: 1
13
Powerchina Guiyang Engineering Corp. Ltd.
Hydraulic engineering,Construction engineering
Patent: 1
14
Anhui Pearl Cement Group Co. Ltd.
Patent: 1
15
Hubei Petrokh Machine Manufacturing Co. Ltd.
Patent: 1
16
Chinese Metallurgical Group Co., Ltd.
Patent: 1
17
Angang Construction Consortium Co. Ltd.
Patent: 1
18
Shandong Yantai Xintai Gold Mining Co., Ltd.
Gold mining,Precious metal,Mining engineering
Patent: 1
19
China Railway First Survey & Design Institute Group Co., Ltd.
Construction engineering
Patent: 1
20
Emeishan Qianghua Special Cement Co. Ltd.
Cement,Materials science,Construction engineering
Patent: 1
Page generation time: Aug 11 2025