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Kenneth R Sidman: Biodegradable, implantable drug delivery device, and process for preparing and using the same. Arthur D Little, Richard J Hammond, September 28, 1982: US04351337 (216 worldwide citation)

An implantable drug delivery device comprising a matrix formed of a poly-.alpha.-amino acid component having one or more drugs and/or diagnostic agents physically contained therein. The drug or diagnostic agent is released through one or both of two mechanisms: diffusion and biodegration which resul ...


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Gerald M Fields, Robert G Metzner: Hybrid car with electric and heat engine. Hybricon, Lyon & Lyon, September 28, 1982: US04351405 (201 worldwide citation)

An apparatus for economical travel and minimization of atmospheric degradation by internal combustion exhaust products. A car which has, in combination, a heat engine driving a set of front wheels, storage batteries and an electric motor driving a set of rear wheels. There is also a system for selec ...


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Nicolaas J Ballintyn, Michael J Michno Jr: Prosthetic devices having sintered thermoplastic coatings with a porosity gradient. Union Carbide Corporation, Donald M Papuga, September 28, 1982: US04351069 (161 worldwide citation)

Coated Prosthetic devices useful in the medical and dental fields, such as dental implants, intramedullary nails, and total hip prostheses, are provided having a porosity or density gradient in the sintered plastic coating. The higher porosity is at the outer surface which facilitates bone ingrowth ...


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Douglas P Boyd, William B Herrmannsfeldt, James R Quinn, Robert A Sparks: X-Ray transmission scanning system and method and electron beam X-ray scan tube for use therewith. The Regents of the University of California, Flehr Hohbach Test Albritton & Herbert, September 28, 1982: US04352021 (125 worldwide citation)

A high speed multiple section, computed-tomographic x-ray scanner is provided. The scanner utilizes a multiple-anode, scanning electron beam x-ray source to provide high speed scanning of sections of the body. No mechanical motion is involved.


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Coy M Fielder: Earth-boring drill bits. Christensen, Bernard Kriegel, Philip Subkow, September 28, 1982: US04351401 (119 worldwide citation)

The invention relates to the design of earth bore-hole drill bits embodying shaped preformed cutters containing hard abrasive materials, such as diamonds, the cutters being mounted in companion preformed sockets in the hard metal bit matrix. The extent of penetration of the preformed cutters into th ...


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Eugene N Scarberry: Emergency internal defibrillation. Carwell & Helmreich, September 28, 1982: US04351330 (118 worldwide citation)

An emergency resuscitation and defibrillation apparatus is provided by an endotracheal tube having a tracheal obturator and a second expandable cuff for sealing against the pharyngeal tissues to provide an alternate sealing means for respiratory fluids if the blind intubation is not successful. A la ...


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Robert J Ottone: Battery analyzer. DC Electronic, Oldham Oldham Hudak & Weber Co, September 28, 1982: US04352067 (117 worldwide citation)

A battery analyzer for testing industrial batteries under a constant current load. The analyzer includes a load bank consisting of a plurality of resistors in selective parallel interconnection. The load bank is placed across the battery terminals. Sensors are connected to each of the cells of the b ...


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John L Matrone: Universal test fixture employing interchangeable wired personalizers. Fairchild Camera & Instrument, Kenneth Olsen, Theodore S Park, Michael J Pollock, September 28, 1982: US04352061 (107 worldwide citation)

A universe of probes is contained within a platen in a spaced-apart, substantially parallel relationship with one another with their tips pointing in the same direction. Each probe is free to move longitudinally between an advanced or test position and a retracted position. The platen nests into a w ...


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