ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,428,674, issued on Sept. 30, was assigned to Wainamics Inc. (Campbell, Calif.).
"System and self-metering cartridges for point of care bioassays" was invented by Arturo M. Escajeda (Oakland, Calif.), Huyen Tran (San Jose, Calif.) and Ming X. Tan (San Ramon, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "The invention is directed to devices and methods for performing rapid low-cost bioassays in self-contained disposable cartridges that provide efficient mixing of sample and reactants under a layer of liquid wax. Some embodiments additionally use gravity assisted distribution of sample and assay reagents in conjunction with an appliance containing...