ALEXANDRIA, Va., Dec. 9 -- United States Patent no. 12,491,513, issued on Dec. 9, was assigned to Hewlett-Packard Development Co. LP (Spring, Texas).

"Microfluidic structures with interior pillars" was invented by Oumnia El Fajri (Corvallis, Ore.), Richard W. Seaver (Corvallis, Ore.), Erik D. Torniainen (Corvallis, Ore.), Anand Samuel Jebakumar (Corvallis, Ore.), Pavel Kornilovich (Corvallis, Ore.), Alexander Govyadinov (Corvallis, Ore.) and Carson Denison (Corvallis, Ore.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An example microfluidic structure can include a first microfluidic channel segment in a first elevation plane, a second microfluidic channel segment in a second elevation plane, and a transver...