1
Hiroshi Ito, Carlton G Willson, Jean M J Frechet: Positive- and negative-working resist compositions with acid generating photoinitiator and polymer with acid labile groups pendant from polymer backbone. International Business Machines Corporation, Joseph G Walsh, January 1, 1985: US04491628 (561 worldwide citation)

Resists sensitive to UV, electron beam and X-ray radiation with positive or negative tone upon proper choice of a developer are formulated from a polymer having recurrent pendant groups such as tert-butyl ester or tert-butyl carbonates that undergo efficient acidolysis with concomitant changes in po ...


2
Lawrence E Pritchard: Medical insurance verification and processing system. Richards Harris & Medlock, January 1, 1985: US04491725 (366 worldwide citation)

A medical claim verification and processing system reads a medical information card (MEDICARD) to determine a patient's background medical and insurance information. The validity of the card is rapidly determined by accessing a central brokerage computer. A local service provider enters into a local ...


3
Hsieh Tong Shen: Automatic liquid-crystal light shutter. Holman & Stern, January 1, 1985: US04491390 (294 worldwide citation)

An automatic liquid-crystal light shutter includes a NAND gate integrated circuit and a pair of RC oscillators operating in cooperation with two solar cells which experience internal resistance changes in response to received light. The changes in the internal resistance of the two solar cells resul ...


4
Jerry L Aikins: Sheath and retractable surgical tool combination. Zimmer, Margaret L Geringer, January 1, 1985: US04491132 (280 worldwide citation)

A surgical instrument comprising a scalpel handle with a separate protective sheath for use in closed surgical procedures, such as arthroscopy. The protective sheath provides for atraumatic insertion of a scalpel blade into the body and to the actual operative site, minimizing the chance of accident ...


5
Dominick Danna, Richard W Newman: Image sensor assembly. Welch Allyn, Bruns and Wall, January 1, 1985: US04491865 (221 worldwide citation)

A compact image sensor package for use in an endoscope or borescope in which a lens system, a solid state image sensor and a circuit board are mounted in tandem within a cylindrical sealed housing. The assembly is positioned within the viewing head of the instrument so that an image of a given targe ...


6
Jonathan S Turner: Fast packet switch. AT&T Bell Laboratories, J C Moran, January 1, 1985: US04491945 (220 worldwide citation)

A communication method and packet switching system in which packets comprising logical addresses and voice/data information are communicated through the system by packet switching networks which are interconnected by high-speed digital trunks with each of the latter being directly terminated on both ...


7
Douglas A Pinnow, Gary E Miller: Information distribution system. Times Fiber Communications, Bacon & Thomas, January 1, 1985: US04491983 (207 worldwide citation)

An information distribution system is disclosed. The system is composed of hub distribution centers which are connected to a plurality of individual subscribers by fiber optic cable or bidirectional coaxial cable. The system is particularly suitable for CATV distribution but may also be adapted to p ...


8
Martin M Black, Philip J Drury: Artificial heart valves. University of Sheffield, King Liles and Schickli, January 1, 1985: US04490859 (187 worldwide citation)

A bioprosthetic mitral valve replacement comprises a flexible frame (1) having a ring-shaped base (2) and at least a pair of upstanding posts (3), which divide the base into at least two portions (2A, 2B) of varying flexibility, together with animal tissue leaflets (4) each having a periphery consis ...


9
Sylvain J Pirson, The American National Bank executor: Method for oil recovery by in situ exfoliation drive. Dunlap & Codding, January 1, 1985: US04491179 (173 worldwide citation)

A method for recovering oil from a bed of tight reservoir rock in which a chamber is formed at the base of the bed followed by alternately combusting rubble in the chamber while recovering oil liberated by pyrolysis and spalling the walls of the chamber by injection of a coolant when oil production ...


10
Yukiyasu Negishi, Yukinori Ishida, Yasunori Saito, Shigeru Tanaka: Optical fiber cable and process for production thereof. Nippon Telegraph & Telephone Public Corporation, Sumitomo Electric, Sughrue Mion Zinn Macpeak and Seas, January 1, 1985: US04491386 (163 worldwide citation)

An optical fiber cable is described comprising a linear center member having at least one longitudinal and spiral groove in the surface thereof, one coated optical fiber received in each groove, an outer sheath that encloses the center member, and a jelly-like material with which the space around ea ...