1
Artie Chin
Amos A Avidan, Arthur A Chin: Method for passivating metals on an FCC catalyst. Mobil Oil, Alexander J McKillop, Charles J Speciale, Dennis P Santini, January 22, 1991: US04986896 (8 worldwide citation)

A known method for passivating contaminant metals on an FCC catalyst comprises treating the catalyst with a sufficient amount of a sulfur-containing compound capable of associating with the contaminant metals when in contact therewith. An improvement comprises contacting the catalyst with the sulfur ...


2
Thomas R Cech, Arthur J Zaug, Michael D Been: RNA ribozyme polymerases, dephosphorylases, restriction endoribonucleases and methods. University Patents, Fish & Richardson, January 22, 1991: US04987071 (495 worldwide citation)

RNA enzymes or ribozymes can act as endoribonucleases, catalyzing the cleavage of RNA molecules with a sequence specificity of cleavage greater than that of known ribonucleases and approaching that of the DNA restriction endonucleases, thus serving as RNA sequence specific endoribonucleases. An exam ...


3
Ebtisam S Wilkins: Vivo refillable glucose sensor. The University of New Mexico, Albert Sopp, January 22, 1991: US04986271 (431 worldwide citation)

An arrangement for prolonging the useful life of an electrochemical refillable implantable glucose sensor employing an enzyme material such as glucose oxidase immobilized on bulk particulate matter suspended in a fluid for reaction with components of bodily fluids and which enzyme material when exha ...


4
Robert C Owens, Mark A Rydell: Valvuloplasty catheter with balloon which remains stable during inflation. Schneider, Haugen and Nikolai, January 22, 1991: US04986830 (340 worldwide citation)

A valvuloplasty catheter is described which includes an elongated flexible plastic tube dimensioned so as to allow it to be passed through the vascular system. Affixed to the distal end portion of the tube is an inflatable expander member which is intended to be positioned in the annulus of the valv ...


5
Mei H Sun, Kenneth A Wickersheim: Three-parameter optical fiber sensor and system. Luxtron Corporation, Majestic Parsons Siebert & Hsue, January 22, 1991: US04986671 (329 worldwide citation)

A single sensor is provided as part of a fiberoptic probe to measure up to three parameters, namely pressure (or force or displacement), temperature, and heat flow or fluid velocity. A solid elastomeric optical element is formed at the end of optical fiber transmission medium, and adjacent light ref ...


6
Andrew F Farr: Atherectomy cutter with radially projecting blade. InterVentional Technologies, Neil K Nydegger, January 22, 1991: US04986807 (256 worldwide citation)

An atherectomy device for cutting obstructive tissue from the lumen of a body vessel comprises a rotatable cutter having a blade. A hollow, generally cylindrical housing defines a central longitudinal axis and has a side opening. The cutter is mounted in the housing for rotation about an axis that i ...


7
Harold J Vinegar: Nuclear magnetism logging tool using high-temperature superconducting squid detectors. Shell Oil Company, January 22, 1991: US04987368 (247 worldwide citation)

A logging device is disclosed for measuring the nuclear magnetism response of earth formations. The device employs a detector that is capable of detecting sinusoidal and slowly varying changes in magnetic field caused by precession of mobile nuclei about the earth's magnetic field. Such a detector m ...


8
Ichiro Masaki: Adaptive motor vehicle cruise control. General Motors Corporation, Albert F Duke, January 22, 1991: US04987357 (221 worldwide citation)

An adaptive cruise control system for motor vehicles uses a video camera and digital processing techniques to enable one vehicle to follow another at a substantially constant or safe distance on a highway under favorable weather conditions. Video detection apparatus is located aboard the following v ...


9
Burton M Casad, Charles R Clark, Lisa A Cantu, D Philip Cords, Edward F McBride: Process for the preparation of fluid loss additive and gel breaker. Conoco, January 22, 1991: US04986355 (196 worldwide citation)

A melted polymer of hydroxyacetic acid with itself or with other hydroxy-, carboxylic acid-, or hydroxycarboxylic acid-containing moieties is subjected to high shear and injected into an organic liquid which is inert to the polymer to form an organic liquid dispersion of very fine polymer particles. ...


10
Lisa A Cantu, Marvin E Yost: Composition and placement process for oil field chemicals. Conoco, E I DuPont de Nemours and Company, January 22, 1991: US04986354 (190 worldwide citation)

Oil field chemicals are incorporated in microcapsules of the condensation product of hydroxyacetic acid or the co-condensation product of hydroxyacetic acid and other compounds containing hydroxy-, carboxylic acid-, or hydroxycarboxylic acid moieties. The microcapsules are then introduced into an oi ...



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