US Patent Issued to NISSAN MOTOR on April 15 for "Cylinder head blank and cylinder head manufacturing method" (Japanese Inventors)

ALEXANDRIA, Va., June 5 -- United States Patent no. 12,276,216, issued on April 15, was assigned to NISSAN MOTOR Co. LTD. (Yokohama, Japan).

"Cylinder head blank and cylinder head manufacturing method" was invented by Moriyuki Nogami (Kanagawa, Japan), Masatoshi Inoguchi (Kanagawa, Japan), Hidenobu Matsuyama (Kanagawa, Japan), Hirohisa Shibayama (Kanagawa, Japan), Yoshitsugu Noshi (Kanagawa, Japan), Koukichi Kamada (Kanagawa, Japan) and Naoya Tainaka (Kanagawa, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A film formation portion is formed on an annular edge portion along an opening portion (16a) of an intake port (16) or an opening portion (17a) of an exhaust port (17). The cross section, along the ...