ALEXANDRIA, Va., Dec. 9 -- United States Patent no. 12,491,326, issued on Dec. 9, was assigned to JUUL Labs Inc. (Washington).

"On-demand, portable convection vaporizer" was invented by Ariel Atkins (San Francisco), Adam Bowen (San Mateo, Calif.), Steven Christensen (Burlingame, Calif.), Alexander J. Gould (Coeur d'Alene, Idaho), Nicholas J. Hatton (Oakland, Calif.), Esteban Leon Duque (Berkeley, Calif.), Kevin Lomeli (San Francisco), James Monsees (San Francisco) and Matthew J. Taschner (Bend, Ore.).

According to the abstract* released by the U.S. Patent & Trademark Office: "On-demand, hand-held vaporizer that operates primarily by convection. The vaporizer is configured to permit very rapid (e.g., within a few seconds) heating of air dr...