US Patent Issued to SHIN-ETSU CHEMICAL on July 21 for "Manufacturing method of porous glass base material for optical fiber and manufacturing apparatus" (Japanese Inventors)

ALEXANDRIA, Va., July 21 -- United States Patent no. 12,686,629, issued on July 21, was assigned to SHIN-ETSU CHEMICAL Co. LTD. (Tokyo).

"Manufacturing method of porous glass base material for optical fiber and manufacturing apparatus" was invented by Naoto Noda (Ibaraki, Japan), Dai Inoue (Ibaraki, Japan), Hitoshi Iinuma (Gunma, Japan) and Hiromasa Mizukami (Ibaraki, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "In a method of manufacturing porous glass base for optical fiber, a liquid organic siloxane raw material stored in a raw material tank of internal pressure P1 is controlled by a mass flow controller at a predetermined flow rate and pumped through pipe of internal pressure P2 to a vaporizer, t...