Abstract: A process for the production of transparent, electrically conductive, infrared-reflecting indium oxide-tin oxide layers, especially on glass panes, involves steps wherein the glass panes are dipped into a first solution containing a hydrolyzable silicon compound and hydrolyzable compounds of titanium, zirconium, aluminum, tin or tantalum;the glass panes are heated up to 450.degree. C. in a moisture-containing atmosphere;the initially coated panes are dipped into a second solution containing hydrolyzable compounds of indium and of tin;the panes are dried at temperatures below 250.degree. C.; andthe panes are finally heated up to 550.degree. C. in a reducing atmosphere.

Abstract: A gentle and inexpensive process for activating surfaces for electroless metallization comprises wetting the surfaces with an activating solution containing a silver-I compound which is sparingly soluble in water (for example AgCl) and which has been converted into a soluble form with the aid of complexing agents (for example NH.sub.3), splitting the soluble complex compound back into the sparingly soluble compound and reducing the silver-I compound remaining on the surface.

Abstract: A mild activation process for the adhesion-activation of polyamide mouldings for electroless metallization comprises treating the substrates, successively or simultaneously, with the solution of a mixture of CaCl.sub.2, LiCl and/or MgCl.sub.2 with AlCl.sub.3, FeCl.sub.3 and/or TiCl.sub.4 in a lower alcohol and with an activator solution based on inorganic complex compounds of the formulaM.sup.n+ [E.sup.m+ Hal.sub.z.sup.- ]in whichM represents two hydrogen or alkali metal atoms or one alkaline earth metal atom,Hal represents a halogen, preferably Cl, andE represents a noble metal atom of the 1st or 8th subgroup of the periodic table, having the valency m and the coordination number z (z-m=n),or with customary colloidal or ionic systems of these noble metals.

Abstract: Apparatus for microwave energized glow discharge deposition of materials, onto a substrate including electronic structures having a plurality of layers of amorphous semiconducting alloys of varying conductivity types. The apparatus includes at least one deposition chamber in which a novel antenna coupled to a source of microwave energy to form a microwave energy excited glow discharge plasma is disposed. The antenna has coaxial conductors approximately one half wavelength long that are electrically connected to each other at their respective distal ends. A multiple integer of one half wavelength of a coaxial transmission line coupling the antenna energy and source may also form part of the antenna. The respective outer conductors of the transmission line and antenna are separated by an electrically small gap, but the respective center conductors are electrically connected.

Abstract: A surface treatment process for parts fabricated of aluminum killed steel in preparation for porcelain coating wherein the parts are subjected to a plurality of sequential liquid spraying treatments as follows:(1) An aqueous alkaline cleaning solution at a temperature of about 180.degree. F. (about 82.degree. C.);(2) A first water rinse;(3) An aqueous ferric sulfate solution having a concentration of from about 0.5% to about 1% and a temperature of from about 155.degree. F. to about 160.degree. F. (about 68.degree. C. to about 71.degree. C.);(4) A second water rinse;(5) An aqueous sulfuric acid solution having a concentration of about 2.5% and a temperature of about 140.degree. F. (about 60.degree. C.);(6) A third water rinse;(7) An aqueous nickel sulfate solution having a nickel concentration of from about 2 to about 2.5 oz./gal. and a temperature of about 150.degree. F. (about 65.degree. C);(8) An aqueous sulfuric acid solution having a concentration of about 0.35% to about 0.

Abstract: Staining of the finish coat on irregular workpieces caused by bleed-out of cleansing chemicals used in autodeposition coating processes is substantially eliminated by maintaining temperatures sufficiently constant to reduce or eliminate significant contraction or expansion of the metal fabric of the workpiece throughout the cleaning stage of the process.

Abstract: A process and apparatus for forming a glass pane having an upper filter band, and possibly both an upper and lower filter band. The glass pane may comprise a lamina of a laminated safety glass for use as a windshield of a vehicle.In the process filter strips are applied to a glass sheet as the glass sheet is moved through a chamber. The filter strips are applied as a family of filter strips which extend continuously along the glass sheet in the direction of its movement. The filter strips of the family are spaced apart laterally. Each filter strip may extend along a straight path, or the filter strips may be of repeating arcuate outline or of sineshaped outline, for example. The filter strips between a pair of marginal filter strips are of a width that may be greater than the width of the marginal strips, and the filter strips may vary in width along their continuous length.

Abstract: An apparatus for efficient X-ray conversion. A phosphorescent crystal element which is sensitive to X-radiation, is coated with a reflective substance on all its faces except one. X-rays impinging upon a single element, or on an array of said elements in which the uncoated faces contiguously form an emitting surface, cause the phosphorescence to be internally reflected by the coating and to be emitted from only the uncoated face, where it can be used to activate a photodetector.

Abstract: A glare-reducing coating, as for the surface of the viewing window of a cathode-ray tube, is prepared by (a) warming a glass support above room temperature, (b) coating a surface of the warm support with an aqueous solution containing a lithium-stabilized silica sol and drying the deposited coating, (c) washing the dry coating with water and (d) baking the washed coating, preferrably at about 90.degree. C.

Abstract: A coating having low absorbance of laser energy is provided on optical components substrates by molecular beam epitaxial growth techniques.The growth conditions prevent contamination of substrate and coating with water and carbonaceous gases. The method of coating has the following steps:arranging the substrate in a vacuum chamber,cleaning the component while holding the pressure below 10.sup.-4 millibar and the partial pressure of H.sub.2 O and carbonaceous gases below 4.10.sup.-9 mb,applying at least one layer of a coating material to the substrate, while holding the pressure below 10.sup.-8 mb and the partial pressure of H.sub.2 O and carbonaceous gases below 4.10.sup.-9 mb.The optical component may be lenses, windows, or reflectors e.g. of ZnSe, GaAs, glass, etc. The coating may be of selenide e.g. ZnSe, etc.

Abstract: An ion beam deposition apparatus capable of uniformly distributing an ionized vaporized material on a desired area of a substrate is disclosed. The apparatus includes an accelerating electrode and a deflecting electrode each arranged between an ionization region and a substrate.

Abstract: A method for repairing pipes laid underground, such as gas pipes, consisting of a main supply pipe from which numerous distribution pipes branch off to supply the individual users, the method using resin to repair the main supply pipe and the distribution pipes from the inside while in their buried state.The repair method of this invention is characterized by the fact that, having repaired the main supply pipe and the distribution pipe in successive operations, whether the repairs to the main supply pipe and the distribution pipes have been done properly or not can be confirmed on completion of the repairs by carrying out sealage tests on the distribution pipes and the main supply pipe.

Abstract: A process for making complementary transistor devices in an epitaxial layer of a first conductivity type having a deep vertical isolation sidewall between the N and P channel transistors by providing a backfilled cavity in the epitaxial layer, the sidewalls of the cavity being coated with layers of material, the first layer being a silicate doped with the same conductivity type as the epitaxial layer in contact with the epitaxial layer and overcoated with an isolation and diffusion barrier layer, the second silicate layer doped to a conductivity opposite to that of the first layer and isolated therefrom by said isolation and diffusion barrier material. The cavity is backfilled with semiconductor material of a conductivity type opposite to that of the epitaxial layer and during this backfilling operation the dopants in the first and second layer outdiffuse into the epitaxial layer and into the backfill material respectfully to prevent the creations of parasitic channels.

Abstract: A mild activation process for the electroless metallization of polyamide mouldings comprises treating the mouldings with a solution of a mixture of halides of elements of the 1st and 2nd main group of the Periodic Table (for example CaCl.sub.2) with salts of weak inorganic bases and strong inorganic acids (for example AlCl.sub.3) in a swelling agent or solvent for polyamides and with a metal-organic complex compound of elements of the 1st or 8th sub-group of the Periodic Table. The sequence is here immaterial.

Abstract: A method and apparatus are disclosed for the color coding of optical fibers (1). The optical fibers (1) are drawn through color chambers (6) in which they are continuously colored. Thereafter they are provided with distinctly colored ring-shaped markings by means of swinging color jets. After passage through a drying path (7), the optical fibers (1) are wound onto take-up reels (13).

Abstract: A pipeline needing leakage repair and/or prevention is filled with a liquid sealant in foamed state of the aqueous emulsion type. Then an excess amount of the sealant in the center of the pipeline is drained from the pipeline, and the sealant remaining on the interior wall of the pipeline is allowed to cure wherein the sealant contains fine particles of inorganic oxide weakly adhering to one another into aggregations, said aggregations easily breaking into such fine particles that they can enter and plug fine cavities of the interior of said pipeline.

Abstract: A method of electroluminescent panel manufacture in which a doped zinc chalcogenide phospher film--for example manganese doped zinc sulphide, is deposited upon an electrode bearing substrate in the presence of a hydrogen enriched atmosphere--for example a 90%:10% argon:hydrogen atmosphere. This is followed by rapid anneal treatment, the substrate being raised quickly to a temperature of 450.degree. C., or greater, and cooled rapidly. It is preferable that, prior to film deposition, the substrate is pretreated by baking in the hydrogen enriched atmosphere. An additional current density limiting film may be applied--a film of low resistance cermet material--for example silica/nickel 20% Ni in SiO.sub.2, or a film of amorphous silicon.

Abstract: Offset printing on a polypropylene resin case for a video tape cassette is readily and effectively accomplished by: first applying an anchor coat, containing a polyol, a polyester and a vinyl chloride resin as principal components and isocyanate as a curing agent, onto the surface to be thus printed of a polypropylene sheet from which a blank sheet is to be die cut and assembled into said case; subjecting the anchor coat to a precuring treatment; and then offset printing on the anchor coat surface with the use of an offset printing ink of ultraviolet ray-curing tape before the anchor coat becomes fully cured.

Abstract: An improved electroless silver plating process in which the plating rate and plating texture are controlled by regulating the oxygen content of the active electroless silver plating solution. An active electroless silver plating solution is continually removed from the plating zone and exposed to a sufficient amount of an oxygen-containing gas to provide a stabilized silver solution. The stabilized silver solution is then extracted, filtered, replenished with desired chemicals, stored or otherwise handled prior to being recycled back to the plating zone. Prior to the stabilized silver solution being passed back to the plating zone, the stabilized solution is scrubbed in a scrubber zone with a gas capable of displacing oxygen from the stabilized solution to produce an active electroless silver plating solution. The plating rate and surface texture of the plated silver layer are controlled in part by regulating the amount of oxygen removed from the stabilized solution prior to passage through the plating zone.

Abstract: A method for coating tin on an electro-conductive substrate in a bath comprising stannous ions, a mineral acid and a non-ionic surfactant consisting of nonylphenoxypoly (ethyleneoxy) ethanol. A catalyst metal comprising metallic zinc or zinc alloy and the substrate to be coated are immersed in the bath. During this immersion electroconductive contact is effected between the substrate and zinc or zinc alloy. A smooth, pore-free, pure tin coat is deposited on the substrate during the time the substrate is in electro-conductive contact with the zinc or zinc alloy.