ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,746,332, issued on Sept. 29, was assigned to BIO HEALTH FRONTIERS INC. (El Dorado Hills, Calif.).

"Differential pressure fluid delivery system" was invented by Paul Lambert (El Dorado Hills, Calif.), Cesar Perez (El Dorado Hills, Calif.), Carlos Gutierrez (El Dorado Hills, Calif.), Neal De Beer (El Dorado Hills, Calif.) and Travis F. Schraeder (El Dorado Hills, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A system for delivering a medicinal fluid to a patient includes a variable volume pressure delivery chamber, a variable volume medication chamber, an optional medication reservoir, a movable delivery element, a fixed reference volume chamber,...