1
Artie Chin
Arthur A Chin, Michael S Sarli: Metal passivating catalyst composition for cracking hydrocarbons. Mobil Oil, Alexander J McKillop, Charles J Speciale, Robert B Furr Jr, May 1, 1990: US04921824 (14 worldwide citation)

An improved composition and method for passivating vanadium on or in a catalytic cracking catalyst during the process of catalytic cracking of hydrocarbons is described. The improved method comprises mixing discrete particles of lanthanum oxide and, optionally, other rare earth oxides along with the ...


2
Richard A Hillstead: Mesh balloon catheter device. Cordis Corporation, Henry W Collins, Thomas R Vigil, May 1, 1990: US04921484 (613 worldwide citation)

The mesh balloon catheter device includes a catheter having a distal end and a proximal end, a tube of woven interlaced filaments forming a tubular mesh and having a proximal end connected to the distal end of the catheter and a distal end, a flush tube or fiber optic tube extending through the cath ...


3
Scott J Solano, Myles L Saunders, James Crittenden: Cerebral balloon angioplasty system. C R Bard, May 1, 1990: US04921478 (452 worldwide citation)

An occlusion catheter for use during the therapeutic intervention of a cerebral blood vessel for flushing away fluid and debris from the area of the therapeutic intervention is provided. The catheter carries an inflatable occlusion balloon capable of being formed into a funnel with the larger end of ...


4
David P Colvin: Method and apparatus for the endoscopic treatment of deep tumors using RF hyperthermia. Triangle Research and Development Corporation, Robert G Rosenthal, May 1, 1990: US04920978 (358 worldwide citation)

An attachment for an endoscope for the treatment of deep tissue tumors using RF hyperthermia is disclosed. In one embodiment, electrodes are adapted to straddle or penetrate a tumor in order to confine the interstitial current heating and are detachably fitted to the distal end of the endoscope. The ...


5
John L Haynes: Blood collection assembly with lancet and microcollection tube. Becton Dickinson and Company, Robert P Grindle, May 1, 1990: US04920977 (345 worldwide citation)

A combined throw-away lancet and blood microcollection tube assembly is provided with a housing having outer dimensions for the assembly the size of a standard test tube for ease of handling and labeling, which housing incorporates a built-in lancet and blood microcollection tube. The housing includ ...


6
Joseph Grayzel: Catheter sheath with longitudinal seam. Weingram & Zall, May 1, 1990: US04921479 (332 worldwide citation)

An improved removable expandable sheath for aiding in the introduction of catheters into the body which is fabricated from a semi-stiff plastic with memory formed in a tubular configuration with a longitudinal slit or non-joined seam extending along the entire length of the sheath and where the tubu ...


7
Leo A Bullara: Bidirectional helical electrode for nerve stimulation. Huntington Medical Research Institute, Christie Parker & Hale, May 1, 1990: US04920979 (297 worldwide citation)

A circumneural electrode assembly having a pair of spaced-apart and oppositely directed helical portions which can be opened by an insertion tool to fit the assembly over a peripheral or cranial nerve. One or more conductive electrodes on the inner surfaces of the helical portions intimately contact ...


8
William P Lidinsky, Gary A Roediger, Scott B Steele, Ronald C Weddige: User to network interface protocol for packet communications networks. American Telephone and Telegraph Company, Werner Ulrich, May 1, 1990: US04922486 (292 worldwide citation)

A high capacity metropolitan area network (MAN) is described. Data traffic from users is connected to data concentrators at the edge of the network, and is transmitted over fiber optic data links to a hub where the data is switched. The hub includes a plurality of data switching modules, each having ...


9
Bandula Wijay, Paolo Angelini: Angioplasty catheter. Leocor, Steve Rosenblatt, May 1, 1990: US04921483 (287 worldwide citation)

An angioplasty catheter has an elongated body with at least one lumen extending therethrough. A tip, constructed of materials softer than the elongated body is attached to the distal end of the body. The tip segment has at least one lumen passing therethrough which is in alignment withthe lumen in t ...


10
Stefan A Jackowski: Catheter with controllable tip. Cordis Corporation, Gerstman & Ellis, May 1, 1990: US04920980 (285 worldwide citation)

In a catheter which comprises a tubular body having a bore, a wire member is loosely positioned in the bore. The wire member is secured to the catheter at a position adjacent the distal end, such position being radially spaced from the axis of the catheter. The wire member extends through the bore a ...