INTERNATIONAL PATENT: CHINA NATIONAL PETROLEUM CORPORATION, 中国石油天然气集团有限公司, CNPC ENGINEERING TECHNOLOGY R&D COMPANY LIMITED, 中国石油集团工程技术研究院有限公司 FILES APPLICATION FOR "PREPARATION METHOD FOR FILTRATE REDUCER AND USE THEREOF"

Posted On: 2026-05-09

GENEVA, May 9 -- CHINA NATIONAL PETROLEUM CORPORATION (9 Dongzhimen North StreetDongcheng District, Beijing 100007), 中国石油天然气集团有限公司 (中国北京市东城区东直门北大街9号), CNPC ENGINEERING TECHNOLOGY R&D COMPANY LIMITED (Building 1, Yard 5, Huanghe StreetChangping District, Beijing 102206), 中国石油集团工程技术研究院有限公司 (中国北京市昌平区黄河街5号院1号楼) filed a patent applic...

Click here to read full article from source

To read the full article or to get the complete feed from this publication, please Contact Us.

Exclusive

Category

Source

Publication

Location

INTERNATIONAL PATENT: CHINA NATIONAL PETROLEUM CORPORATION, 中国石油天然气集团有限公司, CNPC ENGINEERING TECHNOLOGY R&D COMPANY LIMITED, 中国石油集团工程技术研究院有限公司 FILES APPLICATION FOR "PREPARATION METHOD FOR FILTRATE REDUCER AND USE THEREOF"