ALEXANDRIA, Va., Sept. 10 -- United States Patent no. 12,409,212, issued on Sept. 9.
"Immunogenic gel compositions" was invented by Joel Lee Nerem (Edgerton, Minn.), Daniel Brian Hanson (Edgerton, Minn.), Fernando Lopes Leivas Leite (Atlanta), Justin Howard Rustvold (Dacula, Ga.) and Amanda Marie Sponheim (Osage, Iowa).
According to the abstract* released by the U.S. Patent & Trademark Office: "Prodn. of stable, highly immunogenic bacterial mutants for live vaccines from wild types or highly immunogenic strains with one marker (which are attenuated by other causes such that multiplication is not limited). The process comprises selecting stable clones with the non-multiplication-limiting attenuating marker of purine-degendence. The process...