GENEVA, May 3 -- PETROCHINA COMPANY LIMITED (9 Dongzhimen North StreetDongcheng District, Beijing 100007), 中国石油天然气股份有限公司 (中国北京市东城区东直门北大街9号) filed a patent application (PCT/CN2025/122324) for "WATER CONTROL AND GAS CONTROL APPARATUS, COLUMN AND METHOD" on Sep 18, 2025. With publication no. WO/2026/086512, the details related to the patent application was published on Apr 30, 2026.
Notably, the patent application was submitted under the International Patent Classification (IPC) system, which is managed by the World Intellectual Property Organization...