Klein S Gilhousen, Roberto Padovani, Charles E Wheatley III: Method and apparatus for controlling transmission power in a CDMA cellular mobile telephone system. Qualcomm, Russell B Miller, October 8, 1991: US05056109 (784 worldwide citation)

A power control system for a cellular mobile telephone system in which system users communicate information signals between one another via at least one cell site using code division multiple access spread spectrum communication signals. The power control system controls transmission signal power fo ...

John Schultz, Donald Irion: Automated purchase reward accounting system and method. Citicorp POS Information Servies, Howrey & Simon, October 8, 1991: US05056019 (575 worldwide citation)

A marketing method for providing manufacturer purchase reward offers by automatically tracking the purchases of member consumers through the use of bar-coded membership cards and using the purchase records in a data processing system to determine if the required purchases have been made to earn a re ...

Charles D Ray: Surgically implanting threaded fusion cages between adjacent low-back vertebrae by an anterior approach. Surgical Dynamics, Fliesler Dubb Meyer & Lovejoy, October 8, 1991: US05055104 (551 worldwide citation)

When an intervertebral fusion is required, and the disc space is unusualy large, that disc space can be preserved by surgically implanting a pair of relatively large male-thread fusion cages 20, 20A with their threads 13 overlapping. Because of their large size, such fusion cages 20, 20A should be i ...

Eliezer A Sheffer: Vehicle location system. TrackMobile, Rosen Dainow & Jacobs, October 8, 1991: US05055851 (446 worldwide citation)

A system for determining a location of a selected vehicle from which an alarm signal is generated which includes a fixed array of cellular sites each site having a wireless signal detecting and generating units each of which is capable of receiving an input alarm signal having a signal strength whic ...

Robert M Scribner, Stephen M Salmon, Mark L Pomeranz: Ultrasonic imaging catheter having rotational image correlation. Cardiovascular Imaging Systems, Townsend and Townsend, October 8, 1991: US05054492 (344 worldwide citation)

An ultrasonic imaging catheter comprises a catheter body having a distal end and a proximal end. An ultrasonic imaging transducer is located within the distal end and is arranged to produce an image in an image plane which is generally normal to the axial direction of the catheter. An ultrasonically ...

Jo Ann M Canich: Olefin polymerization catalysts. Exxon Chemical Patents, October 8, 1991: US05055438 (339 worldwide citation)

The invention is a polymerization catalyst system including an alumoxane and a Group IV B metallocene having a heteroatom ligand. The catalyst system can be employed to polymerize olefins to produce a high molecular weight polymer.

Robert L Peck: Ionic semiconductor materials and applications thereof. T and G Corporation, Chilton Alix & Van Kirk, October 8, 1991: US05055171 (324 worldwide citation)

An electrode comprising: metallic electrode material; and a nonporous solid composite material encapsulating the electrode material, the composite material comprising an inert matrix material having hydrogel substantially uniformly dispersed therein, the hydrogel comprising 10% to approximately 50% ...

Remi D Swierczek: Disposable skin perforator and blood testing device. Oldham & Oldham Co, October 8, 1991: US05054499 (242 worldwide citation)

A device that pierces the skin due to the collapsing of dome between the fingertips. Immediately after a puncture is made, a blood or exudate sample can be collected on an absorbent test strip laminated on the pressure plate. Flow enhancement of blood or exudate from the puncture site is achieved by ...

Gerard P Abbatte, Peter R Breads, Stephen P Warunek, Brian D Willison: Orthodontic positioner and methods of making and using same. Great Lakes Orthodontics, Hodgson Russ Andrews Woods & Goodyear, October 8, 1991: US05055039 (236 worldwide citation)

An orthodontic positioner appliance of elastomer base material is formed directly on the tooth coupling members during fabrication so as to assure accuracy of the appliance and compliance with the exact shape and placement of the members. A construction model is provided of the patient's teeth in a ...

John H Duerksen: In-situ heated annulus refining process. Chevron Research and Technology Company, Edward J Keeling, Annette M McGarry, October 8, 1991: US05054551 (222 worldwide citation)

Recovery of viscous petroleum such as from tar sands is assisted using a controlled flow of hot fluid and hydrogen-containing gas in a flow path within the formation; thus a solid-wall hollow tubular member in the formation is used for conducting hot fluid to promote hydrogenation in conjunction wit ...