GENEVA, Sept. 1 -- HUANENG COAL TECHNOLOGY RESEARCH CO., LTD. (Room 301, 3rd Floor, Building 8, Zone 17, No.188, Nansihuan West Road, Fengtai DistrictBeijing 100070), 华能煤炭技术研究有限公司 (中国北京市丰台区南四环西路188号17区8号楼3层301室) filed a patent application (PCT/CN2024/124936) for "RAPID COAL MINE ROADWAY EXCAVATION METHOD" on Oct 15, 2024. With publication no. WO/2025/175794, the details related to the patent application was published on Aug 28, 2025.
Notably, the patent application was submitted under the International Patent Classification (I...