This relates to a process for making a brazed lead electrode workpiece, and such workpiece. The process for attaching a lead member to a contact member comprises initially providing a lead member formed substantially of a thermally and electrically conductive metal and terminating at one end in a joining surface, and an axially extending contact member formed substantially of a refractory metal a...

Process for preparing a heteropolysaccharide from strain NCIB 11883 and use of the latter e.g. as viscosity modifier in an aqueous system such as completion fluids, work over fluids, stimulation fluids, and preferably in drilling fluids and use in connection with well-treatments, and enhanced oil recovery.

1531987 Thickener compositions based on xanthomonas gums GENERAL MILLS CHEMICALS Inc 13 Jan 1977 [15 Jan 1976] 01378/77 Heading C3U A thickener blend comprises 5-70 wt. per cent of xanthomonas gum and 95-30 wt. per cent of a hydroxyethyl ether of locust bean gum. The hydroxyalkyl ether is preferably the hydroxypropyl or hydroxyethyl ether, e.g. derived by substitution of 0À05 to 0À5 moles of alkyl...

1358549 Corrugating E W VAN DIJK 14 March 1973 [14 March 1972] 12353/73 Heading B3E A series of undercut corrugations are formed in sheet metal by moving towards each other two clamps on the sheet, while a former moves upwardly between them, so that the sheet is folded around the former to form an undercut corrugation. In the figure, clamps 2a, 2b and 3a, 3b have moved together from stops 6b, 6d t...

This invention relates to an improvement in a light-sensitive copying material comprising a carrier and a light-sensitive copying layer which contains, as the light-sensitive compound, an o-quinone diazide sulfonic acid ester or an o-quinone diazide sulfonic acid amide, the improvement being that the layer also contains a compound with an aromatic or aliphatic hydroxy group which is capable of for...

A smoothing roll for use with apparatus for coating a web of paper or other sheet material, particularly for smoothing coatings at low wet coatweights of silicone compositions applicable in their natural state without the use of a solvent, has a soft elastomeric covering the smoothing surface of which is pitted and is substantially impermeable to liquid coating compositions.

INVENTORS: Grover W. Rye and Karol Marencak INVENTION: VAPOR TREATMENT OF METAL TIRE CORD Brass coated steel tire cord is treated with vaporized benzotriazole and/or other treatment agents to promote corrosion resistance and cord to rubber adhesion retention.

The present invention provides aromatic peroxyacids containing at least three peroxyacid groups, which can be incorporated in detergent or bleaching compositions. The aromatic peroxyacids can be desensitized by intimate contact with a diluent e.g. magnesium sulphate or lauric acid, and coated to reduce destructive interaction with other components of the detergent or bleaching composition. Preferr...

Semiconductor integrated circuits, including, e.g., field effect transistors and memory cells employing field effect transistors, are formed by providing at a surface of semiconductor substrate a pair of isolation mediums and a plurality of spaced apart conductive lines extending between the isolation mediums. The conductive lines, such as polycrystalline silicon or polysilicon lines, are preferab...

An apparatus for continuous curing (vulcanization) of elongated products, such as cables comprising a conductor surrounded by a mantle of a crosslinkable material. The apparatus comprises a curing tube through which the cable is passed longitudinally. The curing tube comprises a heating zone in which the cable is subjected to heating for heating the cable to curing temperature in a pressurized gas...

An apparatus for continuous curing (vulcanization) of elongated products, such as cables comprising a conductor surrounded by a mantle of a crosslinkable material. The apparatus comprises a curing tube through which the cable is passed longitudinally. The curing tube comprises a heating zone in which the cable is subjected to heating for heating the cable to curing temperature in a pressurized gas...