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...that the first rickshaw was invented in 1869 by an American Baptist minister, the Rev. E. Jonathan Scobie, to transport his invalid wife around the streets of Yokohama?
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| Number | Title | Issue Date |
| 6514618 | Multilayer backing material for 2-D ultrasonic imaging arrays A multilayer backing for an ultrasonic transducer array comprises at least two layers in contact with each other. The first layer is formed from a first composition comprising an epoxy resin base and a powder. The second layer is formed from a second comp... | 02/04/2003 |
| 5291893 | Endo-luminal ultrasonic instrument and method for its use An endo-luminal ultrasonic instrument has a motor with a rotatable drive shaft that oscillates back and forth. A flexible catheter sheath is coupled at one end to the motor to oscillate with the drive shaft. The sheath has an axis about which it oscillate... | 03/08/1994 |
| 5213103 | Apparatus for and method of cooling ultrasonic medical transducers by conductive heat transfer A method for transferring heat away from an ultrasonic medical transducer having a face wherein heat is generated. The method is accomplished by positioning a heat sink behind the transducer face, securing the heat sink to a braided power cable, applying ... | 05/25/1993 |
| 5205175 | Multiple transducer selector An ultrasound imager supports several ultrasonic transducers simultaneously. The imager polls the transducer connection ports to determine which transducers are connected to which port and displays attributes of each transducer in conjunction with a port ... | 04/27/1993 |
| 5188112 | Ultrasonic Doppler imaging systems with improved flow sensitivity An ultrasonic blood flow measuring and imaging system comprises a transmit-receive transducer for transmitting ultrasonic waves toward and into the human body and for receiving reflected echo signals which are then processed for use in a Doppler blood flo... | 02/23/1993 |
| 5182728 | Ultrasound imaging system and method A foreground image is overlaid over a background image on a visual display. Specifically, an ultrasound signal is transmitted toward a target to be displayed in two dimensions. Echoes of the ultrasound signal are received from the target. Two-dimesional t... | 01/26/1993 |
| 5175709 | Ultrasonic transducer with reduced acoustic cross coupling A continuous wave driven ultrasonic transducer for determining doppler frequency shift in reflected ultrasonic pressure waves in which the transmitter and receiver sections are constructed of a composite core having a plurality of segments of piezoelectri... | 12/29/1992 |
| 5170792 | Adaptive tissue velocity compensation for ultrasonic Doppler imaging An ultrasonic blood flow measuring and imaging system comprises a transmit-receive transducer for transmitting ultrasonic pulses toward and into the human body and for receiving reflected echo signals which are then processed for use in a Doppler blood fl... | 12/15/1992 |
| 5140558 | Focused ultrasound imaging system and method The train of echoes received in an ultrasound imaging system having an array of ultrasound transducers is shaped and/or focused by first and second programmable beam focusing modules (16-24) in a dynamic receive focus mode. The elemental ultrasound echo s... | 08/18/1992 |
| 5119342 | Focused ultrasound imaging system and method The train of echoes received in an ultrasound imaging system having an array of ultrasound transducers is shaped and/or focused by first and second programmable beam focusing modules (16-24) in a dynamic receive focus mode. The elemental ultrasound echo s... | 06/02/1992 |
| 5103129 | Fixed origin biplane ultrasonic transducer An ultrasonic transducer has two intersecting linear arrays defining a cross shaped transducer assembly having four arms and an intersecting area. A plurality of transverse grooves form transducer elements in the arms. Coaxial transducer elements are form... | 04/07/1992 |
| 5070879 | Ultrasound imaging method and apparatus Ultrasound imaging apparatus has a probe disposed on a longitudinal axis. A linear array of ultrasound transducer elements is arranged along the axis of the probe. The array is alternatively held stationary and oscillated relative to the probe about the a... | 12/10/1991 |
| 5044053 | Method of manufacturing a curved array ultrasonic transducer assembly A curved array ultrasonic transducer is manufactured by cutting a flat transducer plate, which is attached to a flexible support plate, into a plurality of segments, the segments being hingedly attached by the support plate. The support plate is bent to a... | 09/03/1991 |
