ALEXANDRIA, Va., Oct. 27 -- United States Patent no. 12,773,438, issued on Oct. 27, was assigned to AMBE PHYTOEXTRACTS PVT. LTD. (Uttrakhand, India).

"Method of extraction of proanthocyanidins compound from pine bark of Pinus roxburghii" was invented by Harshpal Singh (Uttarakhand, India), Kul Bhaskar Singh (Uttarakhand, India), Shashi Chandrama Singh (Uttarakhand, India), Muskan Choudhary (Uttarakhand, India) and Shipra Agrawal (Uttarakhand, India).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for synthesis of method of extraction of proanthocyanidins compound from pine bark-of Pinus roxburghii comprising the steps: weighing and pulverizing bark to obtain pulverized powder, adding powder with water...