US Patent Issued to SHIN-ETSU CHEMICAL on March 3 for "Manufacturing method of glass base material for optical fiber" (Japanese Inventor)

ALEXANDRIA, Va., March 3 -- United States Patent no. 12,565,442, issued on March 3, was assigned to SHIN-ETSU CHEMICAL Co. LTD. (Tokyo).

"Manufacturing method of glass base material for optical fiber" was invented by Yusuke Kashiwagi (Ibaraki, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A manufacturing method of glass base material for optical fiber in which occurrence of opaque glass portion and elongation can be suppressed is provided. A preparation step of porous base material for optical fiber in which a porous glass layer is formed around the periphery of a core rod; a sintering preparation step, in which the porous base material for optical fiber is hung in a furnace core tube of a sintering a...