ALEXANDRIA, Va., July 15 -- United States Patent no. 12,661,904, issued on June 23, was assigned to The Boeing Co. (Arlington, Va.).

"Fluid reservoir and associated fluid circulation system and method" was invented by Matthew H. Mellin (Seattle), Travis King (Seattle), Jesse Castleberry (Seattle) and Matt Christner (Seattle).

According to the abstract* released by the U.S. Patent & Trademark Office: "A fluid reservoir and associated fluid circulation system and method are disclosed. The fluid reservoir is rotatable into any one of various rotational orientations and includes a housing defining an interior chamber that is divided into a working fluid chamber and a gas chamber by a membrane. An inlet port is fluidically coupled with the wor...