A ceramic substrate having a conductive pattern coating thereon wherein the coating comprises an admixture of finely divided particles of a noble metal or alloy, a low melting low viscosity glass, a spinel-forming metal oxide and an organo titantate and the process of making same.

The invention is an improved optical recording medium and a method for making same in which the substrate has a raised center and peripheral portions. The sides of the raised portions and the upper surface of a light absorptive layer, which overlies the unraised portion, form a mold which is filled with the overcoat material.

Thick film conductor metallization comprising an admixture of finely divided particles of noble metal or alloy, low-melting, low viscosity glass, a spinel-forming metal oxide and an organo titanate.

Resistor composition comprising an admixture of finely divided particles of (a) ruthenium-based conductive material, (b) inorganic binder and (c) a manganese vanadate compound.

A thick film line modulator/scanner (50) for use in an electro-optic line printer (14). A light valve utilizes a thin electro-optic layer (212) with the index of refraction of the layer being higher than the neighboring material so that the light can be guided in it. A laser beam (48) is focused into the layer, the beam expanding sideways so that a sheet of collimated light is provided. This light is affected by an array of electrodes (240, 242), consisting of an extended set of individually add...

Thick-film varistors are made by melting and flame-spraying of precursor particulates onto circuit board substrate material already provided with conductive layers or laminae preferably on both sides. The resulting circuit boards are useful in transient voltage surge suppression (TVSS), such as in a TVSS watt-hour meter adapter.

To provide a thick film resistor involving small variations in resistance and TCR during the firing step and a low thermal coefficient of expansion. A thick film resistor composition containing 5-30 wt. % of a ruthenium pyrochlore oxide and 10-90 wt. % of a glass binder, wherein (1) the ruthenium pyrochlore oxide is PbRuO.sub.3, (2) the glass binder is a glass which contains a first glass containing 61-85 wt. % of PbO, 10-36% of SiO.sub.2 and 0-2 wt. % of B.sub.2 O.sub.3, the total content of th...

A thick film hydrogen sensor element includes an essentially inert, electrically-insulating substrate having deposited thereon a thick film metallization forming at least two resistors. The metallization is a sintered composition of Pd and a sinterable binder such as glass frit. An essentially inert, electrically insulating, hydrogen impermeable passivation layer covers at least one of the resistors.

An approved roofing shingle (10) and a method for its manufacture, are disclosed. The shingle incorporates an upper layer (12) of conventional asphaltic composite roofing material and a lower layer (14) of a polymer foam having a thickness between 1/16 inches and one inch. The foam effectively thickens the shingle to give a layered appearance to a roof using the shingle. The polymer foam can be applied by a free blown or froth process, or preformed and adhered to the composite material sheet by ...

An accelerometer is provided which is suitably rugged for use in on-board automotive safety control and navigational systems. The preferred thick film accelerometer is formed from an alumina substrate having an integrally formed U-shaped flexure member which surrounds an intermediate support member. A mass is provided on the unsupported end of the U-shaped flexure member. Deflection is maximum at the unsupported end of the U-shaped flexure member, while strain is maximum at the supported end of ...