1
John William Sliwa Jr, Paul E Chandler, John D Marshall, Gelston Howell, S Lawrence Marple Jr, Sassan Shahidi: Motion--Monitoring method and system for medical devices. Acuson Corporation, Brinks Hofer Gilson & Lione, September 19, 2000: US06122538 (242 worldwide citation)

A system and method for tracking the position and orientation of a movable medical imaging device using a first and second sensor disposed on the device. The second sensor is of a different type than the first sensor and measures a P/O parameter different from that of the first sensor. The system an ...


2
Dermot McCartan, Gregory A Reynolds, John D Marshall: Apparatus and method to limit the life span of a diagnostic medical ultrasound probe. Acuson Corporation, Brinks Hofer Gilson & Lione, August 7, 2001: US06270460 (108 worldwide citation)

An ultrasound probe for diagnostic medical ultrasound imaging, including an ultrasound transducer and a circuit having a plurality of states to limit the use of the ultrasound probe. Ultrasound probe use can be limited based on a unique identification number (e.g., selected by means of electrically ...


3
John D Marshall, Thierry W Swinson, Richard L Bennett, Kenneth L Cole: Bi-directional snap-action register display mechanism. December 1, 1992: US05168146 (22 worldwide citation)

A bi-directional snap-action register mechanism for an odometer-type mechanical register display. The mechanism includes at least one register display wheel and a bi-directional cam mounted coaxially along a common shaft with the register display wheel. The bi-directional cam engages a helical groov ...


4
Roland D Block, Robert J Byrd, Mark E Chiffon, John D Marshall: Convertible surgical equipment and appliance support system. Steris Corporation, Fay Sharpe Fagan Minnich & McKee, March 6, 2001: US06196649 (12 worldwide citation)

A convertible medical appliance support apparatus includes a box-shaped hollow main body portion A suspended from overhead by a support apparatus B. A horizontal support table C extends forward from the front face of the vertical main body column to form a platform for supporting associated medical ...


5
Dermot McCartan, John D Marshall, David L Lidgey: Ground safety device for medical ultrasound probes. Acuson Corporation, Brinks Hofer Gilson & Lione, November 30, 1999: US05995348 (12 worldwide citation)

An electronic device placed in series with the probe ground-to-chassis connection. The device comprises a current-detecting element such as a resistor or RC network and may employ frequency-discriminating circuitry to limit only ground current signals below a certain frequency. The detector element ...


6
Richard D Taylor, Mark D Montierth, Melvin D Bodily, Gary Zimmerman, John D Marshall: Built-in-self-test using embedded memory and processor in an application specific integrated circuit. Marvell International Technology, August 26, 2008: US07418642 (11 worldwide citation)

A test method for an ASIC uses an embedded processor in the ASIC to execute test routines from an embedded memory or an external memory. During ASIC production, the test routines can comprehensively test of the blocks of the ASIC without a complicated test pattern from test equipment. The test routi ...


7
John D Marshall, Donald R Mullen: Apparatus and method for preventing contact damage in electrical equipment. Acuson Corporation, Liza K Acuson Corp Toth, August 6, 1996: US05542425 (11 worldwide citation)

A connector is provided for preventing damage to contacts between components of an electrical system which is particularly useful when electrical energy is stored in at least one of the components. The connector includes a mechanically operated latching member for activating and deactivating an elec ...


8
Behnam Mehmanpazir, John D Marshall, Michael Hazarian: Apparatus and method for controlling an ultrasound transducer array. Acuson Corporation, Brinks Hofer Gilson & Lione, July 7, 1998: US05776065 (11 worldwide citation)

A transducer array control system for use with a transducer housing and a transducer array that includes a sensing mechanism that generates a sensor signal having a first state indicative of the use of the transducer array. A control mechanism generates a transducer disabling signal when the sensor ...


9
John D Marshall, John C Gaddy: Computer based automatic audio mixer. John C Gaddy, Brinks Hofer Gilson & Lione, April 28, 2009: US07526348 (10 worldwide citation)

A method is provided for automatic digital audio mixing of at least two digital audio files. The method comprises reading samples from the digital audio files, processing the samples to determine a scale factor for each of the files, applying the scale factors to the samples of each of their corresp ...


10
John D Marshall, Thomas N Mclain: Reverse osmosis water purificaiton unit. Schlumberger, Dale V Gaudier, Stephen A Becker, Robert E LeBlanc, October 24, 1989: US04876002 (6 worldwide citation)

A domestic reverse osmosis water purification system utilizing few parts in the controller valve mechanism enhances reliability and economic feasibility. All surfaces of the controller valve mechanism in contact with water are non-metallic and are constructed of FDA approved materials. In addition t ...



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