US Patent Issued to Shin-Etsu Chemical on May 12 for "Optical fiber glass preform and method for drawing optical fiber glass preform" (Japanese Inventor)

ALEXANDRIA, Va., May 12 -- United States Patent no. 12,623,948, issued on May 12, was assigned to Shin-Etsu Chemical Co. Ltd. (Tokyo).

"Optical fiber glass preform and method for drawing optical fiber glass preform" was invented by Ryo Mitta (Ibaraki, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is an optical fiber glass preform, in a preliminary step of a final drawing step, in which the optical fiber glass preform is undergone one or more drawing steps to be drawn to a final target diameter, wherein as an outer diameter of an effective portion of the glass preform is continuously measured in a longitudinal direction, and from outer diameter measurement results obtained, a regression line o...