US Patent Issued to Nippon Pillar Packing on June 2 for "Pipe joint" (Japanese Inventors)

ALEXANDRIA, Va., June 2 -- United States Patent no. 12,644,542, issued on June 2, was assigned to Nippon Pillar Packing Co. Ltd. (Osaka, Japan).

"Pipe joint" was invented by Yohei Okawa (Osaka, Japan), Ayumi Kurosaki (Osaka, Japan), Shingo Higuchi (Osaka, Japan) and Kazukiyo Teshima (Osaka, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A pipe joint includes: an inner ring having a bulge portion to be press-fitted into an end portion of the tube; a joint body having an inner circumference into which an end portion of the inner ring is to be press-fitted, and having an external thread portion on an outer circumference thereof; and a union nut having an internal thread portion to be tightened to the exte...