DS

Douglas J. Scheffler

ET Emerson Process Management Regulator Technologies: 14 patents #7 of 139Top 6%
FI Fisher Controls International: 1 patents #250 of 440Top 60%
Overall (All Time): #317,763 of 4,157,543Top 8%
15
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
10920896 Top entry axial flow regulator James Lyman Griffin, Jr., Daniel G. Roper, Harold J. McKinney, Matthew W. Hanusa 2021-02-16
10678274 Adjustable deadband control system Justin Lane Masias, Tung K. Nguyen, James Curtis Bagby 2020-06-09
10119636 Trapezoidal thread form having a wear indicator and high pressure connection fitting comprising same Khashayar A. Nashery 2018-11-06
10041602 Top entry axial flow regulator James Lyman Griffin, Jr., Daniel G. Roper, Harold J. McKinney, Matthew W. Hanusa 2018-08-07
9989977 Mechanism and method to adjust size of balanced valve Daniel G. Roper, Harold J. McKinney, Jason D. Journey 2018-06-05
9952605 Pilot operated fluid regulators having a reset apparatus and related methods James Lyman Griffin, Jr., Daniel G. Roper, Harold J. McKinney, Jason D. Journey 2018-04-24
9760097 Adjustable deadband control system Justin Lane Masias, Tung K. Nguyen, James Curtis Bagby 2017-09-12
9360131 Actuator adapter plate Khashayar A. Nashery, Roy Ronald Pelfrey, Jeffrey Sexton 2016-06-07
9213339 Fluid regulator having improved flow stability Khashayar A. Nashery 2015-12-15
9176505 Backpressure regulator with easy pump start-up Bruno Jean Michel Cheron, Garrett Winston 2015-11-03
9145904 Pilot operated fluid regulators having a reset apparatus and related methods James Lyman Griffin, Jr., Daniel G. Roper, Harold J. McKinney, Jason D. Journey 2015-09-29
9091366 Flow restricted seat ring for pressure regulators Thomas L. Weyer, Daniel G. Roper, James Lyman Griffin, Jr., Harold J. McKinney 2015-07-28
8708309 Self-aligning spring seat for fluid regulator and fluid regulator comprising self-aligning spring seat Daniel G. Roper, Harold J. McKinney 2014-04-29
8590858 Anti-gradient cupped seat for pressure regulator Daniel G. Roper, Harold J. McKinney 2013-11-26
7896028 Flow restricted seat ring for pressure regulators Thomas L. Weyer, Daniel G. Roper, James Lyman Griffin, Jr., Harold J. McKinney 2011-03-01