ALEXANDRIA, Va., June 12 -- United States Patent no. 12,297,795, issued on May 13, was assigned to Caterpillar Inc. (Peoria, Ill.).

"Multi-function fuel injector valve in dual fuel system and fuel system operating method" was invented by Eric L. Schroeder (Germantown Hills, Ill.), Dana R. Coldren (Secor, Ill.), Robert Graumuller (Kiel, Germany), Kaushik Krishnamurthy (Manteno, Ill.), Dean C. Diers (Rapid City, S.D.), Lifeng Wang (Dunlap, Ill.) and Jianhua Zhang (Dunlap, Ill.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A fuel injector in a fuel system having a first fuel supply of a first fuel and a second fuel supply of a second fuel includes a multifunctional control valve movable in the fuel injector to...