Information Technology
| Fri 10 Jul 2026
Alexandria, July 11 -- U.S. Patent and Trademark Office has awarded a patent to Henan Polytechnic University for Permeability Enhancement Device for Coal-seam Gas Drainage. Li Botao, Li Jinhua, Yao Banghua, Chen Pan, Zhang Hongtu, Tang Yaocai, Wang Xiangyang, Chen Changjiang, Yang Heng, Wang Man, Liu Yong, Zhang Tiegang, Zhang B..