Abstract: A lamp that utilizes a lamp base locking ring to secure a lamp base shell to a lamp. A hollow light transmitting body terminates in a neck that includes threads and a keyway. A lamp base locking ring having an indentation that extends into the keyway is disposed around the circumference of the neck. A lamp base shell is threaded onto the threads of the neck. The lamp base shell is mechanically fastened to the lamp base locking ring to secure the lamp base shell to the hollow light transmitting body.

Abstract: A lamp that utilizes a lamp base locking ring to secure a lamp base shell to a lamp. A hollow light transmitting body terminates in a neck that includes threads and a keyway. A lamp base locking ring having an indentation that extends into to the keyway is disposed around the circumference of the neck. A lamp base shell is threaded onto the threads of the neck. The lamp base shell is mechanically fastened to the lamp base locking to secure the lamp base shell to hollow light transmitting body.

Abstract: A lamp that utilizes a lamp base locking ring to secure a lamp base shell to a lamp. A hollow light transmitting body terminates in a neck that includes threads and a keyway. A lamp base locking ring having an indentation that extends into to the keyway is disposed around the circumference of the neck. A lamp base shell is threaded onto the threads of the neck. The lamp base shell is mechanically fastened to the lamp base locking to secure the lamp base shell to hollow light transmitting body.

Abstract: Increases in surface resistivity of electroless nickel coatings on polycarbonate-containing substrates are inhibited by employing two electroless nickel plating solutions. The first solution is one which deposits a metal layer containing phosphorus, if any, in an amount up to 5% by weight and is used to deposit a layer at least 0.5 micron thick. The second solution is one which deposits a layer containing phosphorus in the amount of at least 5% and preferably at least 6% by weight. Another metal layer may be interposed between the two nickel layers.

Abstract: Cyanate ester polymer articles, particularly fiber-reinforced, are metallized by electroless deposition preceded by a series of pretreatment steps which improve adhesion of the metal layer or layers. Said steps include aqueous alkali followed by nitric acid treatment. They preferably also include an initial alkaline permanganate treatment, preferably preceded by aqueous alkali.

Abstract: The adhesion of metal coatings, such as those produced by electroless or physical vapor deposition, on polypyromellitimide surfaces is improved by prior treatment of the surface with concentrated sulfuric acid, followed by aqueous alkali metal hydroxide of at least about 2M concentration. Further metal may be deposited on the surface, for example by electrolytic or physical vapor deposition, following the original metal deposition.

Abstract: A method for the preparation a photo-mask used for photo-imaging selected areas on the surfaces of a three-dimensional printed circuit board substrate. The photo-mask comprises an opaque layer, opaque and degradation resistant to UV light, having at least one side with a contoured shape conforming to the surface irregularities on the surfaces of the three-dimensional substrate being photo-imaged. A membrane transparent and degradation resistant to UV light, having at least one side cemented to the side of the opaque layer not in contact with the surfaces of the three-dimensional substrate being photo-imaged. A pattern of grooves positioned on the opaque layer allow transmission of UV light during the photo-imaging of the surfaces of the three-dimensiional substrate. The pattern of grooves is in accordance with a conductive metal trace pattern desired on the surfaces of the three-dimensional printed circuit board substrate.

Abstract: A method for the preparation a photo-mask used for photo-imaging selected areas on the surfaces of a three-dimensional printed circuit board substrate. The photo-mask comprises a membrane transparent and degradation resistant to UV light, having at least one side with a contoured shape conforming, and flexible enough to comply with surface irregularities on the surfaces of the three-dimensional substrate being photo-imaged. A pattern of tracks opaque to UV light is positioned along the contoured shape of the membrane. The pattern of tracks on the photo-mask is in accordance with a desired conductive metal trace pattern on the surfaces of the three-dimensional printed circuit board substrate. The photo-mask is prepared by dispensing a track material in a boustrophedenous manner on the surfaces of the substrate being photo-imaged. A membrane material is then poured upon the surfaces containing the dispensed tracks.

Abstract: A method for the preparation a photo-mask used for photo-imaging selected areas on the surfaces of a three-dimensional printed circuit board substrate. The photo-mask comprises a membrane transparent and degradation resistant to UV light, having at least one side with a contoured shape conforming, and flexible enough to comply with surface irregularities on the surfaces of the three-dimensional substrate being photo-imaged. A pattern of tracks opaque to UV light is posiitoned along the contoured shape of the membrane. The pattern of tracks on the photo-mask is in accordance with a desired conductive metal trace pattern on the surfaces of the three-dimensional printed circuit board substrate. The photo-mask is prepared by photo-imaging and then depositing a track material on a film that conformed to the surfaces of the three-dimensional substrate. An adhesive layer applied over the film cements a membrane material poured upon the adhesive layer.

Abstract: A process for the formation of alumina containing carbon fiber mats is provided. The process comprises dispersing an alumina precursor solution in the mat, converting the precursor to an insoluble hydroxide precipitate and hydrolizing the precipitate to form alumina nodules dispersed throughout the mat. Also provided is an alumina containing carbon fiber mat comprising carbon fibers and nodules of alumina, which are substantially uniformly dispersed throughout the mat, and a sodium sulfur cell having a sulfur compartment containing such a mat.

Abstract: A method for removing residual precious metal catalyst from a plastic, metal-plated surface is disclosed. The method involves the oxidation of the precious metal without degrading the plated metal or the plastic, followed by washing away the oxidized precious metal. This invention further includes methods for the plating of metal directly on the surface of a plastic substrate.

Abstract: An improved method for pretreating a polyimide surface in preparation for an adhesion promotion treatment and subsequent metallization is disclosed, wherein the pretreatment comprises mild etching of the surface, contact of the surface with a basic solution, and contact of the surface with a cationic surfactant which is capable of removing a residual film formed on the surface after the mild etching step. This invention further includes articles such as printed circuit boards, which comprise a polyimide substrate pretreated as described above and then treated with an adhesion promoter, wherein an electrolessly-applied metal layer is disposed on the substrate, and an electrolytically-applied metal layer free of chemical additives is disposed on the electrolessly-applied layer. The article may include an additional electrolytically-applied layer containing chemical additives and disposed on top of the first electrolytic layer.

Abstract: A method for treating a polyimide surface is disclosed, in which an adhesion-promoting compound such as thiourea contacts the surface prior to the electroless plating of metal thereon. Articles formed by such a method are also disclosed.

Abstract: A metal oxide is formed within the pores of a porous sintered blank substantially uniformly throughout the porosity of the blank producing a porous bubble pressure barrier of predetermined pore size. The barrier is integrally sintered to a face of an electrode, the median pore size of the barrier being significantly smaller than that of the electrode, producing a composite useful as an electrode in a molten carbonate fuel cell. The blank and the electrode are composed of metal.

Abstract: Utilizing an organometallic precursor, a metal oxide is formed within the pores of a porous sintered blank substantially uniformly throughout the porosity of the blank producing a porous bubble pressure barrier of predetermined pore size. The barrier is integrally sintered to a face of an electrode, the median pore size of the barrier being significantly smaller than that of the electrode, producing a composite useful as an electrode in a molten carbonate fuel cell. The blank and the electrode are composed of metal.

Abstract: Utilizing an organometallic precursor, a metal oxide is formed within the pores of a porous sintered blank substantially uniformly throughout the porosity of the blank producing a porous bubble pressure barrier of predetermined pore size. The barrier is integrally sintered to a face of an electrode, the median pore size of the barrier being significantly smaller than that of the electrode, producing a composite useful as an electrode in a molten carbonate fuel cell. The blank and the electrode are composed of metal.