Julio C Palmaz: Expandable intraluminal graft, and method and apparatus for implanting an expandable intraluminal graft. Expandable Grafts Partnership, Ben D Tobor, October 11, 1988: US04776337 (1215 worldwide citation)

An expandable intraluminal vascular graft is expanded within a blood vessel by an angioplasty balloon associated with a catheter to dilate and expand the lumen of a blood vessel. The graft may be a wire mesh tube, having a biologically inert coating thereon.

Jiri Janata, Robert J Huber, Michael Thompson: Chemical selective sensors utilizing admittance modulated membranes. Thorpe North & Western, October 11, 1988: US04776944 (348 worldwide citation)

A chemical selective sensor system utilizes admittance modulated to detect the presence of chemicals or chemical species in a fluid. The sensor system includes a film or membrane adapted to pass ions when selected chemicals which are to be detected are present at the membrane surface. The membrane i ...

Ottfried J Hahn: Method and apparatus for conversion of coal in situ. University of Kentucky Research Foundation, King and Schickli, October 11, 1988: US04776638 (311 worldwide citation)

A method for the electro-thermal and electrochemical underground conversion of coal into oil and by-products comprises the steps of inserting an underground probe into a bore hole until the probe is in close proximity to a coal seam. A mixture of air, steam, an electrolyte and a suitable catalyst is ...

Robert W George II, Michael C DiPietro, Mark B Kadonoff, James F Maddox: Recharge docking system for mobile robot. Denning Mobile Robotics, Joseph S Iandiorio, Douglas E Denninger, Brian M Dingman, October 11, 1988: US04777416 (282 worldwide citation)

A recharge docking system for a battery-powered mobile robot which senses when the battery charge is below a predetermined level and halts the travel of the robot at its next navigational node, following which the robot independently plots and negotiates a path from the next node back to a base node ...

Byron R Brown, Hung L Hu, Klaas B Klaassen, Joseph J Lum, Jacobus C L Van Peppen, Walter E Weresin: Method and apparatus for in-situ measurement of head/recording medium clearance. International Business Machine Corporation, Otto Schmid Jr, October 11, 1988: US04777544 (191 worldwide citation)

A method and apparatus for measuring the flying height of a slider supporting a magnetic transducer in-situ in a direct manner in an operational magnetic disk storage system. The method and apparatus produce relative motion between the magnetic transducer and a magnetic recording medium at a first v ...

Michael W Chapman, Charles C Edwards, Dana C Mears: Modular femoral fixation system. Pfizer Hospital Products Group, Charles J Knuth, Peter C Richardson, Lawrence C Akers, October 11, 1988: US04776330 (188 worldwide citation)

A modular femoral internal implant system for use in the treatment of femoral disorders resulting from injury, disease or congenital defect includes at least three interconnectable components: (1) an elongated epiphyseal/metaphyseal implant, (2) an intramedullary rod and (3) an angled side plate hav ...

Arup Bhattacharyya, Michael L Kerbaugh, Robert M Quinn, Jeffrey A Robinson: Formation of variable-width sidewall structures. International Business Machines Corporation, Mark F Chadurjian, October 11, 1988: US04776922 (185 worldwide citation)

Spacers are formed having widths that vary as a function of the spacing between the mandrels upon which the conformal material that defines the spacers is deposited and etched. As the spacing between adjacent mandrels decreases, the width of the resulting spacers decreases. The correlation between m ...

Thomas Dandekar: Biosensor. Blakely Sokoloff Taylor & Zafman, October 11, 1988: US04777019 (183 worldwide citation)

This invention introduces a new class of devices for detecting the presence of biological molecules. The construction principle of the device involves the direct introduction of small monomers of macromolecules into the surface layer of a semiconductor, for example by doping at the gate-area of a fi ...

Otto Frey, Rudolf Koch: Bone nail and an instrument for implanting a bone nail. Sulzer Brothers, Kenyon & Kenyon, October 11, 1988: US04776328 (176 worldwide citation)

The bone nail is provided with a tapered portion having a barbed denticulation and a conical head which has a conical shaped depression at the proximal end for receiving a centering cone of the setting and driving instrument. The instrument carries a movable sleeve at the distal end for engaging and ...

Ronald C Wiand: Brazing of diamond. Harness Dickey & Pierce, October 11, 1988: US04776862 (170 worldwide citation)

A monolayer diamond tool is made by coating diamond abrasive particles with a carbide-forming metal and then brazing the coated diamond to a tool substrate.