Congratulations to CNPC USA

Ramey & Schwaller wishes to congratulate its client CNPC-USA on issuance of U.S. Patent Number 10,072,197 B2 titled CROSSLINKED HIGH MOLECULAR WEIGHT POLYMERS FOR USE IN WATER-BASED DRILLING FLUIDS on September 11, 2018.  The patent relates to Crosslinked high molecular weight acrylamide and 2-acry­lamido-2-methylpropane sulfonic acid copolymers in inverse emulsion form act as inhibitive and encapsulating agents for water-based drilling fluids system.

Ramey & Schwalller is a full-service intellectual property law firm working with an international client base from our Houston, Texas office.  We are dedicated to enhancing client results through efficient practice management, innovative technologies and the use of skilled professionals. www.rameyfirm.com

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