US Patent Issued on March 18 for "Phase change pressurizing packing apparatus and method of manufacture / use thereof" (California, Maine, Washington Inventors)

ALEXANDRIA, Va., March 19 -- United States Patent no. 12,252,330, issued on March 18.

"Phase change pressurizing packing apparatus and method of manufacture / use thereof" was invented by W. Davis Lee (Rockport, Maine), Warren R. Kirsch (Palo Alto, Calif.) and Christian T. Metcalfe (Mercer Island, Wash.).

According to the abstract* released by the U.S. Patent & Trademark Office: "The invention comprises a method and apparatus for packaging a dispensable substance, including the steps of: placing a first product component into a container; adding a second product component into the container at an initial pressure of less than 1.31 atm, the container comprising a valve dispensing port; sealing the container; and increasing pressure in the ...