Intellectual Property India Publishes Patent Application for 'Square Washer And Fastening Structure' Filed by Nippon Plarad Co.

MUMBAI, India, June 20 -- Intellectual Property India has published a patent application (202517023629 A) filed by Nippon Plarad Co., Hyogo, Japan, on March 17, for 'square washer and fastening structure.'

Inventor(s) include Saeki Hiroshi.

The application for the patent was published on June 20, under issue no. 25/2025.

According to the abstract released by the Intellectual Property India: "[Problem] To prevent by means of a simple configuration unintended rotation of a square washer induced by another member. [Solution] This square washer is used in a state of being sandwiched between an attachment surface Sa of an attachment subject S and a nut 2 or the head of a bolt. A washer body 1A has a polygonal shape when viewed from a directio...