Abstract: A semiconductor device and a method for its preparation are disclosed, wherein a semiconductor body has at least one bore extending completely or partially therethrough, this bore being defined by a semiconducting region having a conductivity type opposite to, and resistivity lower than, the material of the body contiguous to the bore-defining semiconducting region, this bore having a substantially constant diameter of less than about 1.5 mils and an average length-to-diameter ratio of at least about 6:1.

Abstract: A cutting insert presents clearance and rake faces constructed and dimensionally interrelated to provide a plurality of adjacent offset, substantially parallel, non-coplanar cutting edges. The offset is in the range of from about 0.010 to 0.100 inch and the planes along the clearance face, which include the cutting edges, form part of a series of steps defined by intersecting planes. Each of the angles between these intersecting planes has a value of at least about 90 degrees.

Abstract: A glass wafer having high aspect ratio holes passing therethrough is provided with metal conductors in the holes as feedthroughs. First, the wafer is processed to line the holes with a thin electron-conducting layer of metal. Next, a layer of the same or different metal is applied over the first metal layer providing the requisite feedthrough electrical conductivity for each hole. Preferably, the glass contains lead oxide, the first metal layer is lead and the next layer is copper.

Abstract: A self-sharpening refractory metal cutting tool presenting an overhanging cutting portion, i.e. a flange, or ledge, of width equal to (or slightly greater than) the depth of the cut to be taken and maximum thickness equal to tolerable tool flank wear is disclosed. This tool construction has special utility in a novel high-speed cutting method in which only the tool flange does the cutting in which operation the flange is worn away with the wear progressing lengthwise of the flange during which time the flange sequentially performs a roughing cut and then a finishing cut in a single pass.

Abstract: A dynamically stiffened rotary tool construction is disclosed. The preferred stiffening means are a pair of spaced, adjustable, rotatably-mounted cam followers.

Abstract: Droplets having an electrical charge on the surface thereof are prepared from a first liquid and dispersed in a second liquid, a sterile aqueous tissue culture medium containing serum proteins. The first liquid is non-toxic to living cells and is relatively immiscible with water. The electrical charge on the surfaces of the droplets has a charge density in the range of from about 10 to about 100 charges per square nanometer. Serum protein films adhere to the charged droplets strongly enough to prevent rupture by human fibroblast cells grown thereon.

Abstract: A continuous process for preparing polyphenylene ether resins without removing water is described in which only two continuously vigorously stirred reactors are used with the average residence time in the two reactors being correlated to yield resin having an intrinsic viscosity of at least about 0.35 deciliter/gram.

Abstract: A sintered metallic oxide article is disclosed comprising a non-porous body having at least one porous region formed therein in the general shape of a hollow cylinder, said region placing opposite sides of the body in flow communication. A method is set forth for producing the porous region with a preselected effective open cross-sectional area.

Abstract: A metal-clad laminate having special utility in the production of high resolution printed circuit patterns and preparation of the laminate are described. The laminate preferably comprises a resin-bonded, glass-reinforced substrate, a layer of coupling agent covering and bonded to a major surface of the substrate, a layer of ultra-thin copper adjacent the layer of coupling agent, and a composite bonding layer disposed between the copper layer and the layer of coupling agent. The composite bonding layer comprises copper alloyed with at least one non-copper metal and oxide material of the non-copper metal.

Abstract: High-strength, fine-grain multi-phase substantially crystalline sintered ceramic bodies are produced by a process comprising the steps of cold pressing, followed by sintering at a high temperature, the temperature increase to maximum sintering temperature being accomplished by the use of a heating rate in excess of about 100.degree. C./minute.

Abstract: A novel process is disclosed for the preparation of polyphenylene ethers by an oxidative coupling reaction. The process comprises oxidatively coupling a phenolic compound in the presence of a catalyst which comprises a copper complex of a copper compound with an N,N-disubstituted alkylene or cycloalkylene diamine having from 2 to 3 carbon atoms between the nitrogen atoms and whose substituents on the two nitrogen atoms are isopropyl or alpha tertiary alkyl, a tertiary amine, a bromine-containing compound and dimethyl amine. Unexpected short reaction times are obtained and the high molecular weight product increases in molecular weight and shows a marked decrease in bound nitrogen after moulding.

Abstract: A coproduct continuous dealkylation process is described in which 4-t-butoxy-n-butanol is contacted with acidic silica-alumina catalyst at temperatures in the 160.degree.-200.degree. C. range (reactor wall temperature) in the liquid hourly space velocity regime of 2:0 to 6:0 liter/liter catalyst/hr. to produce in a single reactor a mixture in which the ultimate product of conversion of the 4-t-butoxy-n-butanol is 1,4-butanediol (1,4-diol) and tetrahydrofuran (THF) present in a preselected ratio (mole %) of 1,4-diol to THF ranging from 7:3 to 3:7. The 1,4-diol produced is useful in the preparation of polyesters, e.g. polybutylene terephthalates, and THF is a useful intermediate in the manufacture of certain chemicals and plastics.

Abstract: A fine-scale array of pressure transducers which mimic biological nerve endings and are particularly useful in robotic architecture are provided.

Abstract: A new strain of Pseudomonas fluorescens is disclosed for use in the removal of chromate from waste water.

Abstract: A copper-clad laminate having special utility in the production of high resolution printed circuit patterns by either subtractive or semi-additive processing is made by vapor depositing a film of zinc on a copper film on a silica-coated aluminum carrier sheet, vapor depositing a silica film on the resulting zinc-copper foil, bonding the resulting body to a substrate and then stripping the silica-coated aluminum carrier sheet from the copper-clad laminate.

Abstract: A low temperature (about 0.degree. C. to about 100.degree. C.) method is disclosed for forming an ultrathin film of copper on an aluminum carrier sheet. By this method, which employs matte finish aluminum foil, the peel strength for separating the aluminum carrier from the copper film can be preset at a desired value between 0.1 and 2 pounds per inch.

Abstract: Electrically conductive paths are provided for the high-speed low-loss transfer of electrical signals between integrated circuits of a single silicon-on-sapphire body or between integrated circuits of several silicon-on-sapphire bodies. The conductive paths through the silicon-on-sapphire bodies are made by a process involving implantation of a conductive material in laser-drilled holes.

Abstract: A copper-clad laminate having special utility in the production of high resolution printed circuit patterns is made by a method which includes as the step of forming an initial copper film by vapor depositing copper directly in contact with an as-rolled aluminum carrier sheet at temperature between about 100.degree. C. and 250.degree. C. so that the carrier release peel strength has an average value between about 0.5 and 2.0 pounds per inch.

Abstract: A graphite disc assembly for a rotating x-ray tube embodying a graphite substrate and an anode target of either tungsten or tungsten rhenium joined thereto by a layer of rhodium, osmium, ruthenium, platinum, platinum-chromium, or palladium. .Iadd.

Abstract: A composite substrate for use in a rotating x-ray anode tube consists of a graphite member joined to another member to which a target anode is affixed.