US Patent Issued to European Mud Company AS on June 10 for "Composition for making a drilling fluid a non-invasive drilling fluid" (Norwegian, Australian Inventors)

ALEXANDRIA, Va., June 18 -- United States Patent no. 12,325,823, issued on June 10, was assigned to European Mud Co. AS (Stavanger, Norway).

"Composition for making a drilling fluid a non-invasive drilling fluid" was invented by Jan Kristian Vasshus (Sandnes, Norway), Karl Ronny Klungtvedt (Sandnes, Norway) and Swapan Kumar Mandal (Balcatta, Australia).

According to the abstract* released by the U.S. Patent & Trademark Office: "A composition is for making a drilling fluid a non-invasive drilling fluid. The composition has a first component comprising particles having a scratch hardness above 2 Mohs and a second component comprising particles selected from the group of fragmented seeds of Tamarindus indica, comminuted bark from Litsea glut...