1
Frederick W Rexroth, F Barry Bays: Electrolyte purging electrode tip. Concept, Frijouf Rust & Pyle, July 24, 1990: US04943290 (416 worldwide citation)

An electrolyte fluid purging electrosurgical device for use with an electrode holder connected to an electrical power source and to a source of a non-electrically conductive fluid and a method of use are disclosed. The fluid purging electrosurgical device enables electrosurgery at a surgical site wh ...


2
Takao Sakai, Kenji Hamaguri: Device for measuring oxygen saturation degree in arterial blood. Minolta Camera Kabushiki Kaisha, Price Gess & Ubell, July 24, 1990: US04942877 (302 worldwide citation)

An improved oximeter device for the calculation of oxygen saturation in arterial blood is provided. A pair of LED's are positioned to transmit red and infrared light through tissue containing the blood. A photo electric converter is provided to receive the transmitted light and convert it into a ele ...


3
Robert W Eisinger, Mohammed H Khalil, David H Katz, Robert B Sargeant: Lateral flow, non-bibulous membrane assay protocols. Quidel, Irell & Manella, July 24, 1990: US04943522 (258 worldwide citation)

A method and apparatus for conducting specific binding pair assays, such as immunoassays, is described. A porous membrane capable of non-bibulous lateral flow is used as assay substrate; a member of the binding pair is affixed in an indicator zone defined in the substrate. The sample is applied at a ...


4
Jerome R Waechter, James T Patten, Paul C Kempter: Data collection and transmission system with real time clock. A C Nielsen Company, Mason Kolehmainen Rathburn & Wyss, July 24, 1990: US04943963 (195 worldwide citation)

A communication method and a data collection and transmission system are provided having at least one remotely located monitoring station. A central computer is arranged for bidirectional communication with each of the monitoring stations. Each of the monitoring stations includes a storage and forwa ...


5
Jean Jacques Werner: Spread-spectrum identification signal for communications system. AT&T Company, David R Padnes, July 24, 1990: US04943973 (194 worldwide citation)

A spread-spectrum signal which conveys identifying information for an associated information signal is superimposed on the associated signal and transmitted therewith. Such identifying information distinguishes between voice and data information signals and between different types of data informatio ...


6
Mark R Gehring, Richard R Suter, Lawrence H Ragan: Direct conversion FM receiver with offset. AT&E Corporation, Klarquist Sparkman Campbell Leigh & Whinston, July 24, 1990: US04944025 (181 worldwide citation)

A direct conversion FM receiver that includes AC coupling and automatic gain control employs an offset frequency at the first local oscillator. The offset frequency prevents the frequency spectrum occupied by the signal modulation from being affected by AC coupling. The offset frequency is chosen so ...


7
Amr M Mohsen, Esmat Z Hamdy, John L McCullum: Programmable low impedance anti-fuse element. Actel Corporation, Lyon & Lyon, July 24, 1990: US04943538 (176 worldwide citation)

An electrically programmable low impedance circuit element is disclosed having capacitor-like structure with very low leakage before programming and a low resistance after programming. The electrically programmable low impedance circuit element of the present invention includes a lower conductive el ...


8
Elvis W Boggan: Transaction approval system. Visa International Service Association, Limbach Limbach & Sutton, July 24, 1990: US04943707 (162 worldwide citation)

An improved system is disclosed for detecting invalid transaction cards at remote transaction terminals. The system includes providing each terminal with a master table having data corresponding to invalid cards. The data in the master table is less than the actual account numbers of the invalid car ...


9
Jack R Lander: Self-seating flapper valve for an insufflation cannula assembly. United States Surgical Corporaiton, Thomas R Bremer, Peter G Dilworth, Rocco S Barrese, July 24, 1990: US04943280 (161 worldwide citation)

A cannula assembly for use in conjunction with insufflatory surgical techniques includes a cannula, a housing mounted on one end of the cannula, and a flapper valve mounted in the housing. The flapper valve includes a valve seat which is situated at an opening formed in the housing, a valve plug whi ...


10
Chien Min Sung, Sy Hwa Chen, Leo Merrill, Louis K Bigelow: Low pressure bonding of PCD bodies and method for drill bits and the like. Norton Company, Marmorek Guttman & Rubenstein, July 24, 1990: US04943488 (159 worldwide citation)

An improved temperature stable synthetic polycrystalline diamond (PCD) product includes at least one temperature stable PCD integrally and chemically bonded to a matrix carrier support through a carbide forming layer which is of a thickness of at least about 1 micron, the layer on at least one surfa ...



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