Abstract: An article, such as a microwave waveguide filter, composed of a body of graphite fibre epoxy composite having thereon an electrically conductive layer comprising a thin flash of nickel on the body and a thicker layer of copper on the nickel. The invention also includes a process in which the body is provided with a smooth surface, this smooth surface is then deglazed, or given a slight roughness, a thin flash of nickel is deposited electrolessly on the roughened surface and a heavier coating of copper is electrolessly or electrolytically deposited on the nickel.

Abstract: Method for autocatalytically plating a dielectric surface with a metal such as nickel, cobalt or copper comprising sensitizing the surface with a sensitizing solution comprising both divalent tin, tetravalent tin and a substance furnishing either additional chloride ion (that is, in addition to what may be present in the sensitizer compounds) or bromide ion. The method also includes treating the sensitized surface with a catalyzing solution to provide catalytic nucleating centers and plating the metal on the catalyzed surface.

Abstract: A method of transfer recording comprising selectively irradiating a binderless dry film consisting essentially of a dye or pigment capable of absorbing energy and being vaporized without decomposition.

Abstract: Method of making duplicate copies of information recorded in an organic plastic material as minute surface relief patterns, comprising sensitizing and activating the patterned surface, depositing a thin layer of nickel or cobalt utilizing a room temperature autocatalytic deposition process, backing up the thin metal layer with a heavier electrolytic metal deposit, separating the initial nickel or cobalt surface from the plastic surface and using the metal replica to mold or press duplicate copies in a deformable plastic.

Abstract: A thick-film ink for forming electrically conductive areas on ceramic substrates comprising an organic vehicle and solids composed of 0.5-8% by weight cupric oxide and 99.5-92% by weight finely divided silver.

Abstract: An article comprising a substrate body having a surface coated with a film of a resin having incorporated therein a hydrolyzed metal complex which has adsorbed thereon a metal or metal ion which is a catalyst for the deposition of a metal from an autocatalytic type metal plating bath. The article may also include a film of plated metal.

Abstract: An alloy composed of nickel, boron and phosphorus that does not change substantially in magnetic properties, hardness or resistivity, with substantial changes in temperature.

Abstract: Nickel-phosphorus alloys are electrolessly deposited such that initial deposition takes place at a relatively rapid rate and at a particular acid pH, then when the nickel content of the bath has dropped to a low level, pH drops rather abruptly and the final material deposited has a high phosphorus content relative to the layers initially deposited. In this method the phosphorus content of the surface layers is closely controlled to maintain uniform behavior of the plating in subsequent soldering, wire-bonding and welding operations.

Abstract: A microelectronic LC circuit capable of being tuned to a desired center resonant frequency, comprising a trimmable capacitor, a principal fixed inductor and a printed trimmable inductor having an inductance which is small compared to that of the principal inductor. The printed inductor is one which is capable of having its inductance raised by trimming. In some cases, the fixed inductor can be omitted.