ALEXANDRIA, Va., March 19 -- United States Patent no. 12,250,975, issued on March 18, was assigned to DynaVap LLC (DeForest, Wis.).

"Temperature indicating cap for thermal volatizing device" was invented by George R. Breiwa III (Dane, Wis.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A volatizer is provided including a multifunction cap secured over the open end of a body or other device, the chamber or other part of the device holding an amount of material to be extracted by selective volatization therein and including a thermo-indicator thereon or therein capable of deforming, actuating or otherwise indicating upon heating to a preselected temperature to provide an indication of the proper temperature fo...