GENEVA, March 9 -- 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/CN2025/117271) for "SYSTEM, METHOD AND APPARATUS FOR AUTOMATICALLY CALIBRATING SOUND VELOCITY OF GAS ULTRASONIC FLOWMETER" on Aug 27, 2025. With publication no. WO/2026/046242, the details related to the patent application was published on Mar 05, 2026.
Notably, the patent application was submitted under the International Patent Classification (IPC) system, which is managed by...