1
Frank W Harris: Multiple source electrosurgical generator. Valleylab, Gerald J Ferguson Jr, Joseph J Baker, February 19, 1980: US04188927 (295 worldwide citation)

A multiple source electrosurgical generator wherein one of the sources may be optimized for desiccation of the patient's tissue, another source may be optimized for fulguration thereof and a third source may be optimized for cutting. All sources operate into a common output circuit and may be actuat ...


2
Hendrikus G Kock: Semiconductor device comprising projecting contact layers. U S Philips Corporation, Thomas A Briody, Paul R Miller, February 19, 1980: US04189342 (198 worldwide citation)

A microwave semiconductor device, for example, Gunn effect devices, avalanche diodes and varactors, having a mesa-like semiconductor body which is provided on both sides with respective grown metal contact layers. The upper side of the semiconductor body is provided with a beam lead which projects f ...


3
Vladimir I Loschilov, Vadim V Zasypkin, Vladimir I Petrov: Surgical instrument for ultrasonic separation of biological tissue. Holman & Stern, February 19, 1980: US04188952 (156 worldwide citation)

The instrument connected to an ultrasonic oscillations source is provided with a knife to perform longitudinal mechanical oscillations at ultrasonic frequency during tissue separation. The working portion of the knife is essentially a plate made of a titanium alloy and having a pentogonal cross-sect ...


4
William G Deichert, Kai C Su, Martin F van Buren: Polysiloxane shaped article for use in biomedical applications. Bausch & Lomb Incorporated, Frank C Parker, Ronald L Lyons, February 19, 1980: US04189546 (152 worldwide citation)

Monomeric polysiloxanes end-capped with activated unsaturated groups and polymers and copolymers thereof are disclosed herein for use as contact lenses and biomedical devices with improved properties, such as, oxygen transportability, hydrolytic stability, biological inertness, transparency and impr ...


5
James J Reis: Video bandwidth reduction system using a two-dimensional transformation, and an adaptive filter with error correction. Northrop Corporation, Edward A Sokolski, February 19, 1980: US04189748 (129 worldwide citation)

A reduction in bandwidth of two-dimensional video data is obtained by the two-dimensional transformation of the video data by means of one of a class of fast transformations followed by the elimination of certain non-significant transform coefficients prior to the transmission of the transform data. ...


6
Bjorn Wenander: Surgical cloth. Triplus Sjukvardsprodukter, Holman & Stern, February 19, 1980: US04188945 (115 worldwide citation)

A surgical cloth intended as a protection of the wound edges of an incision. The surgical cloth is provided with a central hole, which uncovers the operation area. A hem surrounds the hole and a rigid but flexible thread is introduced into the hem through an opening. The thread has a loop at one end ...


7
Gerhard Buhr: Radiation-sensitive copying composition. Hoechst Aktiengesellschaft, James E Bryan, February 19, 1980: US04189323 (112 worldwide citation)

This invention relates to a radiation sensitive composition which comprises, as the radiation sensitive compound, an s-triazine corresponding to Formula I ##STR1## wherein X is bromine or chlorine, and m and n are whole numbers from 0 to 3 which, taken together, do not exceed 5, and in which R is a ...


8
George R Cooper, Raymond W Nettleton, David P Grybos: Demodulator unit for spread spectrum apparatus utilized in a cellular mobile communication system. Purdue Research Foundation, John R Nesbitt, February 19, 1980: US04189677 (108 worldwide citation)

A demodulator unit is disclosed for spread spectrum apparatus utilized in a cellular mobile communication system. The cellular mobile communication system includes a plurality of fixed base stations connected with a central processor so that calls originating in any cell can terminate in any other c ...


9
Wolf Dietrich Herold: Metering dispenser for high-viscosity compositions. ESPE Fabrik Pharmazeutischer Praeparate, Ostrolenk Faber Gerb & Soffen, February 19, 1980: US04189065 (99 worldwide citation)

A dispensing device for high-viscosity compositions includes a hollow cylindrical body in which the composition is contained between a closeable discharge opening at the front end of the body and a piston movable in the longitudinal direction of the body. The piston is driven by a threaded spindle e ...


10
Shozo Ejima, Susumu Tomioka, Tadao Matsumoto, Naruaki Hane: Method of forming autogenously bonded non-woven fabric comprising bi-component fibers. Chisso Corporation, Fred Philpitt, February 19, 1980: US04189338 (93 worldwide citation)

A porous non-woven fabric having a good dimensional stability and uniformity is prepared from a web obtained by arranging side-by-side composite fibers alone or a blend thereof with another fibrous material into a web and heat-treating the resulting web at a specified temperature, said composite fib ...