ALEXANDRIA, Va., March 24 -- United States Patent no. 12,587,381, issued on March 24, was assigned to Revolution Medicines Inc (Knoxville, Tenn.).

"Method and system for monitoring and controlling high risk substances" was invented by Joshua M. Kimmel (Knoxville, Tenn.) and Kenneth M. Greenwood (Davenport, Fla.).

According to the abstract* released by the U.S. Patent & Trademark Office: "In a system and method for globally tracking, monitoring, and authorizing the dispensing of valuable and high-risk products such as drugs, secure delivery devices are needed, coupled to a blockchain serving as a distributed database forming a ledger of the journey of the devices and the dispensing of the product, to allow changes to the ledger to be agree...