With the analysis among 29 patents, we discovered top 25 key players by total patent application. Siemens AG, Halliburton Energy Services, Inc., Fujitsu Ltd. are dominant in this area. They take 20.69% of the total patent filing.
Texas, United States
Patent: 2
Zoomlion Heavy Industry Science & Technology Co., Ltd.
Hunan Sheng, China
Patent: 1
Zhejiang Sheng, China
Patent: 1
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