1
Mark J Nixon, Marion A Keyes IV, Trevor D Schleiss, John A Gudaz, Terrence L Blevins: Method and apparatus for performing a function in a plant using process performance monitoring with process equipment monitoring and control. Fisher Rosemount Systems, Marshall Gerstein & Borun, April 17, 2007: US07206646 (127 worldwide citation)

A process control system uses a data collection and distribution system and an asset utilization suite to collect data or information pertaining to the assets of a process plant from various sources or functional areas of the plant including, for example, the process control functional areas, the ma ...


2
Donald K Frerichs, Azmi Kaya, Marion A Keyes IV: Method and procedure for neural control of dynamic processes. Elsag International, Vytas R Matas, Robert J Edwards, December 29, 1992: US05175678 (101 worldwide citation)

A neural network control based on a general multi-variable nonlinear dynamic model incorporating time delays is disclosed. The inverse dynamics of the process being controlled is learned represented by a multi-layer neural network which is used as a feedforward control to achieve a specified closed ...


3
Azmi Kaya, Marion A Keyes IV: Heat exchanger performance monitor. August 23, 1988: US04766553 (30 worldwide citation)

A performance monitor generates a fouling factor which indicates the level of fouling of a heat exchanger having a heat exchange surface area and through which a heat exchange medium passes having a known specific heat. Temperature transmitters are utilized to obtain values for the input and output ...


4
Marion A Keyes IV, Richard A Salmen deceased: Water level gauge with fault detector. The Babcock & Wilcox Company, Vytas R Matas Robert J Edwards, May 29, 1984: US04450722 (29 worldwide citation)

A water level gauge with fault detector comprises a column for containing a level of water with a plurality of light sources on one side of the column and a plurality of detector assemblies on an opposite side of the column. Filters are utilized to project red and green light through the column. Eac ...


5
Marion A Keyes IV, Trevor D Schleiss, Mark J Nixon, Ron Eddie, Terrence L Belvins, Ram Ramachandran: Appendable system and devices for data acquisition, analysis and control. Fisher Rosemount Systems, Marshall Gerstein & Borun, April 25, 2006: US07035773 (23 worldwide citation)

An appendable system includes a plurality of appendable devices that are adapted to interoperate with each other and/or a workstation via a communication network to monitor and/or control a process. Each of the appendable devices can communicate with one or more sensors and/or control outputs and in ...


6
Joseph M Giachino, Marion A Keyes IV: Flame monitoring safety, energy and fuel conservation system. The Babcock & Wilcox Company, Vytas R Matas, Robert J Edwards, October 16, 1984: US04477245 (22 worldwide citation)

A flame monitor for a burner comprises an oscillator which generates a signal at a characteristic frequency, a flame modulator connected to the oscillator and the burner for modulating the flame which produces an electromagnetic signal at the same frequency and a signal detector for detecting the el ...


7
Marion A Keyes IV, Jeremiah J Shaffer: Adaptive gain compressor surge control system. The Babcock & Wilcox Company, Vytas R Matas, Robert J Edwards, December 9, 1986: US04627788 (18 worldwide citation)

An adaptive gain surge control system (18) is disclosed for a centrifugal compressor (14) which reacts to both normal and emergency surge conditions by controlling a bypass valve (48) across the compressor (14) inlet and outlet in response to a variable gain (G) determined by the offset (d) of the s ...


8
Marion A Keyes IV, Jeremiah J Shaffer: Adaptive gain compressor surge control system. The Babcock & Wilcox Company, Vytas R Matas, Robert J Edwards, October 6, 1987: US04697980 (16 worldwide citation)

An adaptive gain surge control system (18) is disclosed for a centrifugal compressor (14) which reacts to both normal and emergency surge conditions by controlling a bypass valve (48) across the compressor (14) inlet and outlet in response to a variable gain (G) determined by the offset (d) of the s ...


9
Jeffrey A Beller, Ralph K Johnson, Roger Kammerer, Azmi Kaya, Marion A Keyes IV: Method of modeling and control for delignification of pulping. Elsag International, Vytas R Matas, Robert J Edwards, Daniel S Kalka, October 22, 1991: US05060132 (16 worldwide citation)

A method and apparatus for controlling the delignification process by monitoring and minimizing variations in the Kappa Number and the digester residual chemical concentration. A parameter representative of the H factor for the delignification process and a measurement of the initial chemical concen ...


10
Marion A Keyes IV, Michael P Lukas, William H Moss: Maximum efficiency steam temperature control system. The Babcock & Wilcox Company, Vytas R Matas, Robert J Edwards, October 29, 1985: US04549503 (13 worldwide citation)

A system is disclosed for increasing the main steam temperature in a boiler/turbine installation to the maximum level consistent with safe operation of the installation. The difference between the main steam temperature and a system parameter is determined and used as an index to adjust the main ste ...