Abstract: The invention is a catalyst system for purifying exhaust gases generated by a lean-burn internal combustion engine, particularly automotive engines. The catalyst system comprises two separate components located in the exhaust gas passage, the first being a lean-burn nitrogen oxide catalyst and the second being a nitrogen oxide trap material, where the lean-burn NOx catalyst is located upstream of the NOx trap material in the exhaust gas passage. Preferably the catalyst comprises a transition metal such as copper, chromium, iron, cobalt, or manganese loaded on a refractory oxide or exchanged into a zeolite. The NOx trap preferably comprises (i) at least one precious metal selected from platinum and palladium loaded on a porous support; and (ii) at least one alkali metal or alkaline earth metal (a) loaded on a porous support or (b) present as an oxide thereof. Optionally the catalyst system may further comprise a three-way catalyst located either between the two-components or after the NO.sub.x trap material.

Abstract: The invention is a method of preventing the formation of nickel sulfide stones in soda-lime-silica glass. Nickel compounds are often added as colorants or enter the glass batch as an impurity from raw materials. It involves mixing batch raw materials together, melting and refining them to form a molten glass, the improvement comprising the step of reducing the formation of nickel sulfide stones by adding to the batch materials 0.01-2.0 wt. % of an oxygen containing manganese compound calculated as manganese dioxide. The manganese compound may be a manganese oxide or salts of permanganic acid such as sodium or potassium permanganate.

Abstract: This invention is a catalyst comprising silver loaded on a particularly defined alumina for reducing nitrogen oxide from emissions generated by a lean-burn engine. The alumina has (i) a high surface area of at least 150 m.sup.2 /g, (ii) a small average pore diameter between 15 to 100 angstroms wherein at least 65% of the pore diameters are in the range of 15 and 100 angstroms, and (iii) pore diameters distributed in a narrow range such that at least 55% of the pore diameters are distributed in a 50 angstrom range.

Abstract: Disclosed is a method to make and an apparatus for monitoring the exhaust gas conversion efficiency of a catalytic converter. The catalytic calorimetric sensor disclosed includes a sol-gel processed washcoat and sol-processed catalytically active metal particles. Sol-gel processing creates a washcoat with high surface area and controlled porosity which increases the sensitivity, durability, and reproducibility of the resultant sensor.

Abstract: A bilaminate window glass assembly for an automotive vehicle includes at least one pane forming a window glass, a non-breakable frame disposed adjacent about at least a portion of a perimeter of the pane and a panel bonded to one side of the frame and the pane to form a bilaminate window glass.

Abstract: A glazing unit has a tempered glass pane or other frangible glazing pane carrying a glazing pane breakage detector assembly. The detector assembly includes spaced first and second electrically conductive bus pads formed of electrically conductive material on a surface of the glazing pane. An electrically resistive trace on the surface of the glazing pane is formed of electrically resistive material different from the electrically conductive material of the bus pads. The resistive trace establishes a non-short electrical interconnection between the bus pads, which can be formed of highly conductive material, such as silver-filled paint currently in widespread commercial use. Such bus pads afford a structurally sound attachment, with good electrical contact by soldering, electrically conductive epoxy or the like upon which upstanding attachment tabs are secured. Electrical leads can be attached to such upstanding tabs to connect the detector assembly to suitable security circuitry.

Abstract: The invention is directed to a method of making a water-based paint composition comprising sodium silicate, water, water-soluble base, metal oxide pigment, soda-lime-silica glass particles and at least one of a low-melting glass frit or zinc oxide. Preferably, it comprises only the low-melting glass frit and further preferably comprises surfactants and aluminum hydroxide. In another aspect, it is also directed to a method of making a formed glazing having a cured coating of the paint composition thereon.

Abstract: The invention is directed to a water-based paint composition comprising sodium silicate, water, water-soluble base, metal oxide pigment, soda-lime-silica glass particles and at least one of a low-melting glass frit or zinc oxide. Preferably, it includes only the glass frit and it further preferably comprises surfactants and aluminum hydroxide.

Abstract: The invention is directed to glass sheets carrying a coating of a water-based paint composition comprising sodium silicate, water, water-soluble base, metal oxide pigment, soda-lime-silica glass particles and, at least one of a low-melting glass frit or zinc oxide. Preferably, it comprises only the glass frit and it further desirably comprises surfactants and aluminum hydroxide.

Abstract: An apparatus and method for applying a coating to glass including a support surface for supporting a glass pane, a print screen having a screen support frame defining a perimeter of the print screen disposed above the support surface to apply a coating over the print screen. The print screen is deflected into contact with the glass pane at predetermined points thereon and the coating is moved over the print screen to deposit the coating on the predetermined points on the glass pane when the print screen is so deflected. The apparatus also includes a vapor manifold having a predetermined width disposed within the perimeter defined by the screen support frame and coupled to a source of vapor. The vapor manifold distributes a vapor blanket over the print screen and the glass pane, thereby reducing the rate at which the coating on the glass pane dries and impede evaporation of the coating from the print screen.

Abstract: The invention is directed to a water-based paint composition comprising sodium silicate, water, water-soluble base, metal oxide pigment, and glass frit as an adhesion promoter. Preferably, it further comprises zinc oxide, surfactants, and aluminum hydroxide. In other aspects, it is directed to the method of making the composition, and glass sheets having a cured paint field thereon, and the method of making such glass sheets.

Abstract: This invention relates to first and second plate glass templates each having an outer smooth major surface and an inner rough major surface, only each of the major outer smooth surfaces being peripherally bounded by a chamfer formed at the cut edge. In this invention, the first and second templates are joined together with the rough surfaces in facing retention. The first and second plate glass templates may be used in forming a window.

Abstract: The invention is directed to a water-based paint composition comprising sodium silicate, water, water-soluble base, metal oxide pigment, and zinc oxide as an adhesion promoter. Preferably, it further comprises glass frit and surfactants. In other aspects, it is directed to the method of making the composition, and glass sheets having a cured paint field thereon, and the method of making such glass sheets.

Abstract: A method for heating and forming a glass sheet includes the steps of heating a glass sheet to at least a first predetermined temperature, applying microwave energy to the glass sheet to heat the glass sheet to at least a second predetermined temperature, cooling an outer surface of the glass sheet to at least a third predetermined temperature and forming the glass sheet using forming rollers to a predetermined configuration.

Abstract: In a method of producing an integrated circuit assembly, an IC device is metallurgically bonded to a supporting substrate. The mounting of the IC device to the substrate also includes a polymeric underfill body adhesively bonding the IC device to the substrate. The polymeric underfill body is formed of a curable underfill composition comprising epoxy resin, anhydride curing agent for the epoxy resin, amine catalyst and a minor amount of an additional component selected from alkyl-substituted imidazole and phenyl-substituted imidazole. Such additional component may act as a catalyst, as used with an amine catalyst known catalyst for the polymerization reaction of the epoxy resin with the anhydride curing agent, may act as a co-catalyst. The polymeric underfill body has improved glass transition temperature values and improved coefficient of thermal expansion values to provide good thermal stress cycling life for the integrated circuit assembly.

Abstract: An apparatus sculpturing from sheet material a vacuum formed glass mold. The sheet material is cut into a plurality of sections that are combined into laminated structure is that is welded together and mounted on a mold base. The top surfaces of the individual sections are machined to form a glass forming surface that can be used to vacuum form glass that conforms to the shape of the forming surface.

Abstract: A pre-assembled glass breakage detector applique has a carrier substrate which carries an electrical circuit subassembly. The electrical circuit subassembly includes an electrically conductive fragile film and spaced electrical connectors. A method of making a glazing unit security system includes pre-assembling one or more such glass breakage detector appliques and then applying the electrical circuit subassembly thereof, with or without the carrier substrate, to the surface of a glazing pane, and connecting electrical needs from continuity loss detection circuitry to the electrical connectors. In a motor vehicle application, the appliques can be applied to stationary and/or moveable vehicle windows, being especially advantageous for use on a hidden surface area of moveably mounted glazing panes. The fragile film loses electrical continuity upon disruption of the underlying glazing pane, such as upon overall fracture of a tempered glass pane upon significant fracture anywhere in the pane.

Abstract: A glazing unit security system has an electrically conductive strip of polymeric material self-adhered to the surface of a tempered glass pane. Security means electrically connected to the conductive strip senses and responds to a loss of electrical continuity of the conductive strip. The conductive strip is non-self-integral, such that it would not survive with electrical continuity a fracture of the underlying glass panel. Since a fracture of the tempered glass panel will result in overall fracturing of the panel, it would cause loss of electrical continuity of the conductive strip. The security system further includes an alarm or other device responsive to a loss of electrical continuity of the conductive strip. When installed in a motor vehicle, the security system may include disabling means to prevent normal operation of the motor vehicle in response to loss of electrical continuity of a conductive strip.

Abstract: An on-board monitoring system for estimating the hydrocarbon conversion efficiency of a vehicle catalytic converter receives temperature signals from a plurality of temperature sensors positioned to detect the temperature of exhaust gas entering the catalytic converter and to detect the temperature of the catalyst substrate in the catalytic converter at spaced positions along the direction of flow. Diagnostic routine initiation tests are performed to determine if the vehicle is operating within an acceptable range, and if so, then a plurality of sets of temperature values are measured and stored over a plurality of time intervals. During the time intervals, several engine operating parameters are checked to determine if the vehicle is operating within a range which conforms approximately to the range of operation encountered in the Federal Test Procedure (FTP).

Abstract: Apparatus and method are provided for testing of exhaust gas emissions from an internal combustion engine, and determining the engine's operating condition. An inferred value for the ratio of hydrogen to carbon in the exhaust, based on measured values for the H.sub.2 O, CO.sub.2 and CO components of the exhaust gas, is used to determine whether the engine and associated exhaust componentry have reached normal operating conditions. The emissions testing apparatus and method are suitable for remote testing of exhaust gas emissions from an internal combustion engine of an on-road motor vehicle. A light source emits preferably near to mid-infrared light to impinge upon the exhaust gas emissions. The emitted light includes wavelengths absorbed by exhaust species to be measured, including at least H.sub.2 O, CO.sub.2 and CO. Following impingement on the exhaust gas emissions, the light is received by a sensor which generates an output signal corresponding to the amount of light received at each of such wavelengths.