ALEXANDRIA, Va., June 12 -- United States Patent no. 12,297,643, issued on May 13, was assigned to NITTO DENKO Corp. (Osaka, Japan).
"Reinforcing material and reinforcing structure" was invented by Yuto Suzuki (Osaka, Japan) and Takayuki Iwase (Osaka, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A reinforcing material that includes a resin layer and a constraining layer disposed on the resin layer. The resin layer contains a thermosetting resin, a diene rubber, a tackifier resin, and a vulcanizing agent. The thermosetting resin contains a flexible epoxy resin. The tackifier resin has a softening temperature of 75deg C. or more and 100deg C. or less. The tackifier resin has a bromine value of 30 gBr2/...