1
Edward T Maggio: Kit for carrying out chemically induced fluorescence immunoassay. Syva Company, Bertram I Rowland, July 7, 1981: US04277437 (356 worldwide citation)

A competitive protein binding method is provided for the determination of an analyte which is a member of an immunological pair consisting of ligand and receptor for the ligand. A chemiluminescent source is employed comprised of one or more individual members, one chemiluminescent source member bein ...


2
Paul E Stuckert: Personal portable terminal for financial transactions. International Business Machines Corporation, Roy R Schlemmer Jr, July 7, 1981: US04277837 (317 worldwide citation)

A personal portable terminal for financial transactions adapted for use with one or more data storage and transfer cards (DSTCs) and other external devices, such as point of sale terminals, is disclosed. The transaction device includes keyboard means for entering transaction data and control informa ...


3
Daniel Sheinbein: Method and apparatus for screening telephone calls. Bell Telephone Laboratories Incorporated, Charles H Davis, July 7, 1981: US04277649 (305 worldwide citation)

A telephone system is disclosed for providing customized telephone services. A called customer can screen calls incoming to his station based on the identity of the calling line. The calling line's identity is forwarded to the switching office containing the called customer's screening memory. The m ...


4
Elburn Robison: System for viewing the area rearwardly of a vehicle. Norman B Rainer, July 7, 1981: US04277804 (288 worldwide citation)

An undistorted view of regions rearward of a vehicle such as a tractor-trailer is provided by a closed circuit television system wherein a television camera having a wide angle viewing capability is positioned at the rear of the vehicle at an effective viewing elevation between about 20% and 70% of ...


5
Ernest G Tickner, Ned S Rasor: Ultrasonic image enhancement. Rasor Associates, Phillips Moore Weissenberger Lempio & Majestic, July 7, 1981: US04276885 (287 worldwide citation)

Ultrasonic images of flowing streams can provide important information regarding the streams. Herein, a plurality of microbubbles are provided in such streams to enhance such images, aid in tumor detection and treatment, provide mapping of vascularity of tissue masses and measure instantaneous blood ...


6
Norman A Grant: Process for producing methanol. Aminoil USA, Knobbe Martens Olson Hubbard & Bear, July 7, 1981: US04277416 (238 worldwide citation)

A system for processing coal to produce methanol, alcohol-slurry coal for transport, electric power and urea. Raw coal is graded. The downgraded fraction is gasified, producing steam and synthesis gas. The synthesis gas is converted to methanol which is then used to slurry upgraded coal for transpor ...


7
Sidney Wolvek, Bruce L Hanson: Elongatable balloon catheter. Datascope, Kenyon & Kenyon, July 7, 1981: US04276874 (220 worldwide citation)

Inflatable and deflatable balloon catheters are disclosed. Catheters according to the invention have an expansion chamber that may be elongated to reduce its radial dimension without producing oblique or transverse folds or wrinkles. The inflatable chamber of the catheter is supported by an elongate ...


8
John E Cadotte: Interfacially synthesized reverse osmosis membrane. FilmTec Corporation, Merchant Gould Smith Edell Welter & Schmidt, July 7, 1981: US04277344 (204 worldwide citation)

Good salt rejection and flux characteristics can be obtained with reverse osmosis membranes made from crosslinked, interfacially polymerized aromatic polyamides, particularly poly(arylenepolyamine aromaticpolycarboxylamides) such as poly(phenylenediamine trimesamide). The aromatic polyamides are pre ...


9
Carlile R Stevens: Power supply for a high intensity discharge or fluorescent lamp. Stevens Luminoptics, Roger A Marrs, July 7, 1981: US04277728 (201 worldwide citation)

This power supply for a high intensity gas discharge or fluorescent lamp exhibits near unity power factor with no third harmonic distortion, and facilitates highly efficient lamp operation with dimming capability. This is achieved by using an inverter to drive a resonant network that includes the la ...


10
G Kent Archibald: IV Pump with empty supply reservoir and occlusion detector. Avi, Kinney Lange Braddock Westman and Fairbairn, July 7, 1981: US04277226 (165 worldwide citation)

A volumetric infusion pump useful in intravenous feeding includes a detector which provides an alarm when the supply bag or reservoir becomes empty or an occlusion occurs between the supply bag and the pump. The pump includes a first pumping chamber having a cylinder, a piston, a first flexible diap ...



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