1
Steven Nichtberger, Kevin McGlynn, Corey Snook: Paperless system for distributing, redeeming and clearing merchandise coupons. Steven Nichtberger, Darby & Darby, November 21, 1989: US04882675 (494 worldwide citation)

Cents-off merchandise coupons are distributed and redeemed immediately and electronically. An electronic display of coupons valid for use in a particular store is presented to customers in that store. When a customer makes a selection of coupons from the display, the selection is recorded. The custo ...


2
Daniel R Bergeron, Clifton C Dutton: On-line wagering system with programmable game entry cards and operator security cards. GTECH Corporation, Steele Gould & Fried, November 21, 1989: US04882473 (452 worldwide citation)

An on-line wagering system with programmable game entry cards including cards having on-card data storage for value tokens and data uniquely related to the player and including cards with on-card data storage for operator security data. The player cards are operable as payment means in which the tok ...


3
William W Gallmeyer: Information display for rearview mirrors. Donnelly Corporation, Price Heneveld Cooper DeWitt & Litton, November 21, 1989: US04882565 (419 worldwide citation)

A rearview mirror assembly for vehicles which displays information useful to the driver/viewer when viewing the mirror assembly. Indicia are formed by narrow deletion lines, preferably using computer controlled laser marking apparatus, in a reflective coating on a mirror element of the assembly. A l ...


4
Larry D Monroe, William P Wood: Abrasive grits formed of ceramic containing oxides of aluminum and rare earth metal, method of making and products made therewith. Minnesota Mining and Manufacturing Co, Donald M Sell, Walter N Kirn, Richard Francis, November 21, 1989: US04881951 (240 worldwide citation)

Ceramic abrasive grits comprising alpha alumina and at least about 0.5 percent by weight rare earth metal oxide are prepared by combining alumina hydrate and rare earth metal oxide or its precursors to produce a blend, drying the blend to produce a dried solid, crushing the dried solid to produce gr ...


5
Kevin J Friel: Electrical devices comprising conductive polymers. Raychem Corporation, Marguesite E Gerstner, Timothy H P Richardson, Herbert G Burkard, November 21, 1989: US04882466 (235 worldwide citation)

An electrical device includes a laiminar resistive element which exhibits PTC behavior and two electrodes which exhibit ZTC behavior. The electrodes have a geometry which results in a resistance that is greater than the resistance of the resistive elements. The electrical device, which may be a heat ...


6
Kenneth J Schlager: Non-invasive near infrared measurement of blood analyte concentrations. Biotronics Associates, Andrus Sceales Starke & Sawall, November 21, 1989: US04882492 (234 worldwide citation)

A non-invasive apparatus and related method for measuring the concentration of glucose or other blood analytes utilizes both diffuse reflected and transmissive infrared absorption measurements and may be applied to either in vitro or in vivo sampling. The apparatus and method utilize non-dispersive ...


7
Donald J Casey, Louis Rosati: Polyesters containing alkylene oxide blocks as drug delivery systems. American Cyanamid Company, Alice C Brennan, November 21, 1989: US04882168 (230 worldwide citation)

The invention is a slow release drug delivery system comprising a drug and an ABA or AB block copolymer wherein one block (B) is a poly(alkylene oxide) and the other blocks (A) are comprised of degradable random copolymers of (1) the cyclic ester of an alpha-hydroxy acid and (2) a second cyclic este ...


8
Anthony P F Turner, Stuart P Hendry, Marco F Cardosi: Application of tetrathiafulvalenes in bioelectrochemical processes. Cranfield Institute of Technology, Irell & Manella, November 21, 1989: US04882013 (195 worldwide citation)

Bioelectrochemical processes use tetrathiafulvalenes (TTF) as a mediator of electron transfer between biological systems and electrodes. Typically it finds use in bioelectrochemical assays, e.g. involving glucose oxidase mediated oxidation of glucose. The TTF may be immobilized on the electrode surf ...


9
Odo J Struger, Mark Luboski, Timothy J Murphy: Programmable controller with I/O expansion module located in one of I/O module positions for communication with outside I/O modules. Allen Bradley Company, Quarles & Brady, November 21, 1989: US04882702 (175 worldwide citation)

The capacity of programmable controllers with a processor module and I/O modules connected in a single equipment rack is expanded by connecting an I/O expansion module in one of the positions normally occupied by a conventional I/O module. The I/O expansion module communicates with the processor mod ...


10
Onkar S Narula: Catheter. Fulwider Patton Lee & Utecht, November 21, 1989: US04882777 (172 worldwide citation)

An improved catheter construction having a distal end and a proximal end, with a tip disposed at the distal end, the catheter having a complex "multi-planar" curvature to automatically position the distal end at a desired internal location within a biological subject, the catheter being formed of a ...



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