US Patent Issued to Canon on Nov. 25 for "Cured product, optical element, optical apparatus, and imaging apparatus" (Japanese Inventor)

ALEXANDRIA, Va., Nov. 25 -- United States Patent no. 12,479,976, issued on Nov. 25, was assigned to Canon K.K. (Tokyo).

"Cured product, optical element, optical apparatus, and imaging apparatus" was invented by Kei Tagami (Kanagawa, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A cured product of a resin composition. The resin composition comprises a compound represented by the following formula (1):R1 to R4 are each independently selected from a polymerizable functional group, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkyl group having a polymerizable functional group at a terminal thereof which may contain an oxygen or sulfur atom replacing one CH2 in a main chain o...