INTERNATIONAL PATENT: PETROCHINA COMPANY LIMITED, 中国石油天然气股份有限公司 FILES APPLICATION FOR "HIGH-PRESSURE LARGE-DIAMETER FIBER REINFORCED PLASTIC PIPE CONNECTION STRUCTURE AND PREPARATION METHOD"

GENEVA, Dec. 21 -- PETROCHINA COMPANY LIMITED (9 Dongzhimen North Street,Dongcheng 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/CN2025/087977) for "HIGH-PRESSURE LARGE-DIAMETER FIBER REINFORCED PLASTIC PIPE CONNECTION STRUCTURE AND PREPARATION METHOD" on Apr 09, 2025. With publication no. WO/2025/256243, the details related to the patent application was published on Dec 18, 2025.

Notably, the patent application was submitted under the International Patent Classification (IPC) system, which is managed ...