With the analysis among 309 patents, we discovered top 278 key players by total patent application. Fermentalg SA, China Petroleum & Chemical Corp., Dalian Fu Zhou Wan SAltworks are dominant in this area. They take 3.88% of the total patent filing.  
China Petroleum & Chemical Corp.
Beijing Shi, China
Patent: 4
Dalian Fu Zhou Wan SAltworks
Liaoning Sheng, China
Patent: 3
Henan Houyi Pharmaceutical Co. Ltd.
Henan Sheng, China
Patent: 3
Sinopec Corp. Fushun Petrochemical Research Institute
Liaoning Sheng, China
Patent: 3
Xinxing Ductile Iron Pipes Co., Ltd.
Hebei Sheng, China
Patent: 2
SINOPEC Engineering (Group) Co., Ltd.
Beijing Shi, China
Patent: 2
Hubei Jianghan New Materials Co., Ltd.
Hubei Sheng, China
Patent: 2
Zhengzhou Houyi Pharmaceutical Co. Ltd.
Henan Sheng, China
Patent: 2
Vidar Environment Technology Co., Ltd.
Guizhou Sheng, China
Patent: 2
No data, please try another search term
With the analysis among related 211 patents applied in the last 5 years. We discover 178 most active companies in this area. The fast-growing Xi'an Jiaotong University, Heixuanfeng Engineering Machinery Develop Co. Ltd., Nanyang Haichuang Technology Co., Ltd. take 2.84% of patent filing during this period.  
Xi'an Jiaotong University
Shaanxi Sheng, China
Patent: 2
Heixuanfeng Engineering Machinery Develop Co. Ltd.
Hubei Sheng, China
Patent: 2
Nanyang Haichuang Technology Co., Ltd.
Henan Sheng, China
Patent: 2
Zui Qingfeng Wine Co., Ltd.
Sichuan Sheng, China
Patent: 2
Tianjin Huazhilong Biomass Energy Technology Co., Ltd.
Tianjin Shi, China
Patent: 2
South China University of Technology
Guangdong Sheng, China
Patent: 2
Shandong Zhicheng Agriculture And Animal Husbandry Development Co.,ltd.
Shandong Sheng, China
Patent: 2
Northwest Plateau Biology Research Institute, Chinese Academy of Sciences
undefined undefined
Patent: 2
Sponge City Rainwater Collection and Utilization Technology Co., Ltd.
Zhejiang Sheng, China
Patent: 2
Dongguan University of Technology
Guangdong Sheng, China
Patent: 2
With the analysis among related 211 patents in last 5 years, we discover 176 new entrants. Xi'an Jiaotong University, Heixuanfeng Engineering Machinery Develop Co. Ltd., Nanyang Haichuang Technology Co., Ltd. are the most active new entrants in this area.  
Xi'an Jiaotong University
Shaanxi Sheng, China
Patent: 2
Heixuanfeng Engineering Machinery Develop Co. Ltd.
Hubei Sheng, China
Patent: 2
Nanyang Haichuang Technology Co., Ltd.
Henan Sheng, China
Patent: 2
Zui Qingfeng Wine Co., Ltd.
Sichuan Sheng, China
Patent: 2
Tianjin Huazhilong Biomass Energy Technology Co., Ltd.
Tianjin Shi, China
Patent: 2
Shandong Zhicheng Agriculture And Animal Husbandry Development Co.,ltd.
Shandong Sheng, China
Patent: 2
Northwest Plateau Biology Research Institute, Chinese Academy of Sciences
undefined undefined
Patent: 2
Sponge City Rainwater Collection and Utilization Technology Co., Ltd.
Zhejiang Sheng, China
Patent: 2
Dongguan University of Technology
Guangdong Sheng, China
Patent: 2
Zou Lu Chinese Medicine Research Institute (Guangzhou) Co., Ltd.
Guangdong Sheng, China
Patent: 2
With the analysis among 94 patents, we discovered top 44 universities and scientific research institutions by total patent application. South China University of Technology, Tongji University, Central South University are dominant in this area. They take 10.64% of the total patent filing.  
South China University of Technology
Guangdong Sheng, China
Patent: 3
Shanghai Shi, China
Patent: 2
Hunan Sheng, China
Patent: 2
Xi'an Jiaotong University
Shaanxi Sheng, China
Patent: 2
The Chinese University of Hong Kong
Hong Kong SAR, China
Patent: 2
Dalian Institute of Chemical Physics Chinese Academy of Sciences
Liaoning Sheng, China
Patent: 2
Qingdao University of Science & Technology
Shandong Sheng, China
Patent: 2
Dongguan University of Technology
Guangdong Sheng, China
Patent: 2
Tianjin Shi, China
Patent: 2
Guangdong Sheng, China
Patent: 1