ALEXANDRIA, Va., June 12 -- United States Patent no. 12,297,562, issued on May 13, was assigned to 1)MIRISE Technologies Corp. (Nisshin, Japan), 2)DENSO Corp. (Kariya, Japan) and 3)TOYOTA JIDOSHA K.K. (Toyota, Japan).

"Silicon carbide ingot including screw dislocations" was invented by Isaho Kamata (Tokyo), Norihiro Hoshino (Tokyo), Kiyoshi Betsuyaku (Tokyo), Hidekazu Tsuchida (Tokyo), Takeshi Okamoto (Nisshin, Japan) and Akiyoshi Horiai (Nisshin, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A silicon carbide ingot having micropipes in a seed crystal closed and being reduced in the gathering of screw dislocations, a method for manufacturing the silicon carbide ingot, and a method for manufacturing a ...