ALEXANDRIA, Va., April 7 -- United States Patent no. 12,595,333, issued on April 7, was assigned to 3M Innovative Properties Co. (St. Paul, Minn.).
"Curable adhesive, bonding film, and method of bonding the same" was invented by Lianzhou Chen (Woodbury, Minn.) and Kristen J. Hansen (Afton, Minn.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A curable composition comprises: 1 to 65 percent by weight of polyepoxide comprising an addition reaction product of phenolphthalein and bisphenol A diglycidyl ether; 5 to 50 percent by weight of liquid polyepoxide; and an effective amount of curative for curing the curable composition. A curable adhesive film comprising the curable composition, and method of bonding are...