Garo Khanarian
Gunilla E Gillberg LaForce, Garo Khanarian: Organic-inorganic composites with enhanced nonlinear optical response. Hoechst Celanese, Depaoli & O Brien, April 3, 1990: US04913845 (11 worldwide citation)

In one embodiment this invention provides an nonlinear optical medium which is a composite of a polymer matrix which exhibits nonlinear optic response, and a silver colloid which is dispersed in the polymer matrix.

Bob Ware
Quang N Le, Robert A Ware, Stephen S Wong: Process configuration for producing high viscosity lubricating oils. Mobil Oil, Alexander J McKillop, Charles J Speciale, Robert B Furr Jr, April 3, 1990: US04913794 (15 worldwide citation)

A process is disclosed for improving the Viscosity Index of a hydrocarbon lubricating oil comprising the steps of providing a flow reactor having separate first and second inlet ports for the separate co-injection of lubricating oil and an organic peroxide, charging said lubricating oil and said org ...

Richard A Hillstead: Apparatus and method for placement of a stent within a subject vessel. Cordis Corporation, Watts Hoffmann Fisher & Heinke, April 3, 1990: US04913141 (403 worldwide citation)

A stent delivery system and method. A stent is routed to a desired position within a vessel within a subject. A delivery wire is routed out an opening in a delivery catheter and looped over a portion of the stent and then routed back inside the delivery catheter. At an extreme distal end of the sten ...

Robert B Loatman, Stephen D Post, Chih King Yang, John C Hermansen: Natural language understanding system. Emhart, Carl A Forest, April 3, 1990: US04914590 (387 worldwide citation)

A hybrid natural language understanding (NLU) system which is particularly designed for processing natural language text. Primary functional components of the NLU system include a preprocessor; a word look-up and morphology module which communicates with a lexicon and a learning module; a syntactic ...

David I Dunthorn: Virtual button for touch screen. David B Harrison, April 3, 1990: US04914624 (375 worldwide citation)

Apparatus and methods for creating a virtual push button comprise a touch sensitive orthogonal data field input device useably connected within a computing system in which a touch action at the device generates a stream of data related to the location within the field of the touch action. The orthog ...

Eduardo R Luque: Spinal fixation system. Biotechnology, Walker & McKenzie, April 3, 1990: US04913134 (357 worldwide citation)

A spinal fixation system for fixing vertebrae. A rigid elongated plate having openings is provided for being placed over the vertebrae. A plurality of screws having apertures extending along the longitudinal axis are provided for extending through the openings in the plate and into the vertebrae to ...

Daniel C Swinehart, Douglas B Terry: Garbage collector for hypermedia systems. Xerox Corporation, April 3, 1990: US04914586 (324 worldwide citation)

A database of interests is maintained in a distributed computing system to register the individual interests of users in centrally stored non-textual media files, such as digital voice, music, scanned-in image, and video files. Uniquely named piece table style persistent data structures are employed ...

Peter W Cheung, Karl F Gauglitz, Scott W Hunsaker, Stephen J Prosser, Darrell O Wagner, Robert E Smith: Method and apparatus for the automatic calibration of signals employed in oximetry. Physio Control Corporation, Christensen O Connor Johnson & Kindness, April 3, 1990: US04913150 (283 worldwide citation)

Under the present invention, a method and apparatus are provided for compensating for the effect temperature variations have on the wavelength of light emitted by the oximeter sensor light sources (40, 42). In pulse oximetry, LEDs are typically employed to expose tissue to light at two different wav ...

Jeffrey L Kodosky, James J Truchard, John E MacCrisken: Graphical system for modelling a process and associated method. National Instruments, Flehr Hohbach Test Albritton & Herbert, April 3, 1990: US04914568 (237 worldwide citation)

A method for programming a computer system having a display console for displaying inages to control at least one of a virtual instrument and an instrument by the steps of displaying on the screen at least one first function-icon that references at least one first control module for controlling at l ...

Calhoun G Jeambey: System for recovery of petroleum from petroleum impregnated media. Edwards Development, Knobbe Martens Olson & Bear, April 3, 1990: US04912971 (231 worldwide citation)

A conjoint probe apparatus having an adjustable extendable probe end for embedding in the porous media for in situ sensing of changes in the dielectric constant of the carbonaceous constituents undergoing microwave pyrolysis, and a mechanism for indicating the sensed changes, for adjusting the radia ...