Abstract: Spent silver catalysts, from which the recoverable silver has already been stripped, was discovered to be useful for controlling microorganisms such as bacteria and fungi, including microorganisms in fluids such as water, or on surfaces to which coatings containing the stripped, spent silver catalysts are applied, and also in and on products or substrates in which the stripped, spent silver catalysts are incorporated.

Abstract: Spent silver catalysts, from which the recoverable silver has already been stripped, was discovered to be useful for controlling microorganisms such as bacteria and fungi, including microorganisms in fluids such as water, or on surfaces to which coatings containing the stripped, spent silver catalysts are applied, and also in and on products in which the stripped, spent silver catalysts are incorporated.

Abstract: Method and apparatus for catalytically oxidating grease, fats, oils and/or other hydrocarbons in fumes rising from a source thereof. In particular, grease and odor-laden air streams, i.e. hydrocarbon-laden air streams, emanating from a source such as a cooking grill or the like are heated to a temperature at which passage over a catalyst causes flameless oxidation of the organic material in the air stream at a temperature below combustion temperature, the organic material being converted essentially to carbon dioxide and water, with release of at least some heat energy. The oxidized and heated air stream is ducted in countercurrent relation or in identically parallel direction, to the relatively cooler hydrocarbon-laden air stream which is being ducted toward the catalyst, heat exchange from the oxidized air stream to the hydrocarbon-laden air stream thereby occurring to at least partially heat the hydrocarbon-laden air stream.

Abstract: A pressurized aerosol package contains a metal-containing catalytic mixture of the type used in catalytic heaters. The mixture could contain, for example, chloroplatinic acid, with other materials, such as aluminum oxide, dextrose and triethanolamine all dissolved and mixed in water. In use, the mixture is sprayed onto, and impregnates, expended carrier pads of catalytic heaters to revive the pads and permit continued use of the heaters. In addition, the mixture can be sprayed into the exhaust system of an operating engine to coat the inner walls of the muffler of the system for antipollution purifying purposes.