ALEXANDRIA, Va., March 31 -- United States Patent no. 12,592,545, issued on March 31, was assigned to LumentumRadiant GmbH (Baar, Switzerland).
"Ridge type semiconductor optical device" was invented by Sara Taku (Tokyo), Takayuki Nakajima (Tokyo), Masaru Onga (Sagamihara, Japan) and Shuhei Ono (Sagamihara, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A device includes: a laminate including first and second regions adjacent to respective both sides of an isolation groove; a mesa stripe structure adjacent to the first region on the laminate and extending in the first direction; a bank structure adjacent to the second region on the laminate and extending in the first direction; and an electrode pattern....