ALEXANDRIA, Va., Aug. 5 -- United States Patent no. 12,697,612, issued on Aug. 4, was assigned to HEWLETT-PACKARD DEVELOPMENT COMPANY LP (Spring, Texas).

"Microfluidic sensing" was invented by Fausto D'Apuzzo (Palo Alto, Calif.), Viktor Shkolnikov (Palo Alto, Calif.) and Alexander N. Govyadinov (Corvallis, Ore.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A microfluidic sensing assembly may include a first structure supporting a sensor array, a second structure joined to the first structure and forming a microfluidic passage and a flat lens to focus light, following reflection of the light back and forth across the microfluidic passage, from the microfluidic passage onto the sensor array."

The patent was ...