1
Robert W Gore, Samuel B Allen Jr: Waterproof laminate. W L Gore & Associates, John S Campbell, March 18, 1980: US04194041 (361 worldwide citation)

A waterproof article for use in, for example, protective clothing. The article prevents liquid water from penetrating through to undergarments while at the same time permitting moisture vapor such as perspiration to pass out through the article. The article is thus both breathable and waterproof. Th ...


2
Thonet C Dauphine: Method for production of organic products from kerogen. The Badger Company, M D Bartlett, J D Pannone, H W Arnold, March 18, 1980: US04193451 (272 worldwide citation)

A method of producing fluid organic products from kerogen in situ in a body of oil shale by the application of alternating electric fields having a frequency between 100 kilohertz and 100 megahertz to heat the kerogen in the oil shale to a temperature in the range of 200.degree. C. to 360.degree. C. ...


3
Elton M Tucker, Frank R Prosl: Infusion apparatus and method. Metal Bellows Corporation, Cesari and McKenna, March 18, 1980: US04193397 (185 worldwide citation)

An infusion apparatus and method employs an infusate reservoir connected by way of a first flow restrictor to a mixing chamber and a second infusate reservoir connected via a second flow path having a selected restriction characteristic to the same mixing chamber so that infusate may be conveyed to ...


4
Edwin F Ullman, John M Brinkley: Labeled liposome particle compositions and immunoassays therewith. Syva Company, Bertram I Rowland, March 18, 1980: US04193983 (166 worldwide citation)

The subject invention concerns novel compositions for use in immunoassays, as well as immunoassays employing such novel compositions. The compositions comprise discrete charged colloidal particles comprised of small molecules which particles are capable of retaining their discrete character in an aq ...


5
James C Stoffel: Automatic multimode continuous halftone line copy reproduction. Xerox Corporation, March 18, 1980: US04194221 (156 worldwide citation)

An image data handling system to automatically detect and segregate from a stream of image pixels high frequency half-tone image input, continuous tone image input, low frequency half-tone image input, and line image input which may be present in the pixel stream. The image pixels are first autocorr ...


6
Josefina T Baker, Robert S Cooke, Stylianos Sifniades: Poly(ester-carbonates) from dicarboxylic acid chlorides. Allied Chemical Corporation, Robert A Harman, March 18, 1980: US04194038 (144 worldwide citation)

A process for poly(ester-carbonates) from dihydric phenols, especially bisphenol A; aromatic or cycloaliphatic dicarboxylic acids, especially terephthalic acid; and phosgene as carbonate precursor wherein a reaction of the acid and phosgene is carried out in a first stage forming dicarboxylic acid c ...


7
Thomas P Stephens: Lever and fulcrum clamping assembly. Portex, Pollock Vande Sande & Priddy, March 18, 1980: US04193174 (129 worldwide citation)

The present invention relates to a one-piece tubular clamping assembly formed from a plastic type material and comprising a first clamping arm engageable with a flange positioned on a second clamping arm to create a unique lever and fulcrum structure capable of securing one or more concentric tubula ...


8
Robert G Fulks, Robert E Enfield, Eric Sacher: Method and apparatus for isolating faults in a logic circuit. NCR Corporation, J T Cavender, Albert L Sessler Jr, March 18, 1980: US04194113 (122 worldwide citation)

A portable processor-oriented digital tester and method for isolating faults in digital printed circuit boards under test. The digital tester includes a processor, a main memory and a plurality of driver/sensor circuits. The main memory stores a signature file containing known correct signatures for ...


9
Henry O Herrmann Jr: Field repairable connector assembly. AMP Incorporated, Russell J Egan, March 18, 1980: US04193655 (119 worldwide citation)

An electrical connector assembly is disclosed having the capability of being field repairable as well as being assembled in a plurality of configurations by appropriate selection of parts. The assembly includes mating plug and receptacle shells, a pin insert and a socket insert each capable of being ...


10
Gerald L Gill Jr, Philip J Rioux: Polishing apparatus. Kayex Corporation, Lloyd F Seebach, March 18, 1980: US04193226 (115 worldwide citation)

The polishing apparatus utilizes a pressure head that imparts rotary motion to a wafer to be polished during the polishing operation and is of such a structure so as to eliminate the need for the use of any bonding agent for holding the wafer in intimate contact therewith. In this apparatus, the hea ...