ALEXANDRIA, Va., June 10 -- United States Patent no. 12,292,125, issued on May 6, was assigned to Life Technologies Corp. (Carlsbad, Calif.).

"Umbrella check valve assembly having retention plate" was invented by Charles R. Rhodes (Preston, Idaho) and Jonathan O. Schultz (Hyrum, Utah).

According to the abstract* released by the U.S. Patent & Trademark Office: "A check valve assembly includes a first port fitting and a second port fitting with a base secured therebetween. The base has an annular sleeve encircling a seat, the seat having a central mounting hole and one or more flow channels passing therethrough. An umbrella valve includes a flexible sealing disk having an outer surface and an opposing inner surface, a mounting stem extendin...