select PATENTS Below is a collection of several of the most interesting devices created by Joe Vadder. Heat transfer hybrid heat exchanger apparatus and method of operating the same Assignee: Evapco, Inc Multi-Cavity Tubes for Air-Over Evaporative heat exchanger Assignee: Evapco, Inc. Bi-directional fill for use in cooling towers Assignee: Evapco, Inc. Additive manufacturing additive manufactured heat exchanger for heat exchangers Assignee: Evapco, Inc additive manufacturing by selective liquid cooling Assignee: Evapco, Inc. thermal storage additive manufactured heat exchanger for heat exchangers Assignee: Evapco, Inc ice thickness probe assembly and monitoring apparatus Assignee: Evapco, Inc. Advanced manufacturing thermal fill bonding method Assignee: Evapco, Inc method and apparatus for cooling tower fan mounting Assignee: Evapco, Inc. systems and control Water-Savings adiabatic spray system Assignee: Evapco, Inc. food processing spring cutter-separator Assignee: Oklahoma State University