ALEXANDRIA, Va., Aug. 12 -- United States Patent no. 12,384,886, issued on Aug. 12, was assigned to ASAHI KASEI K.K. (Tokyo).
"Porous polyimide composition and polyamide acid composition" was invented by Hirotaka Mori (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a porous polyimide composition having low colorability and high light transmittability. Provided is a porous polyimide composition, in which an average pore size (L) obtained by the following expression based on a pore volume (V) and a BET specific surface area (A) determined by a gas adsorption method: L=4V/A; is 5 nm or more and 500 nm or less, a light transmittance at 450 nm at a film thickness of 1 mm is 10% or more and 100% ...