ALEXANDRIA, Va., March 19 -- United States Patent no. 12,251,747, issued on March 18, was assigned to DAIWA CAN COMPANY (Chiyoda-ku, Japan).
"Manufacturing method of plate member" was invented by Masahiro Shiotani (Sagamihara, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A manufacturing method of a plate member, in which a strip material can be positioned with respect to a die all through stamping operations using a pilot hole formed in an initial phase of the stamping operations. The plate member is manufactured by a press machine in which a progressive stamping die having a plurality of stations is placed. The manufacturing method comprises: forming an oval pilot hole 14 in an uncoiled strip 13; an...