Issued Patents All Time
Showing 1–21 of 21 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10920896 | Top entry axial flow regulator | James Lyman Griffin, Jr., Daniel G. Roper, Douglas J. Scheffler, Matthew W. Hanusa | 2021-02-16 |
| 10100854 | Heated fluid regulators | James Lyman Griffin, Jr. | 2018-10-16 |
| 10041602 | Top entry axial flow regulator | James Lyman Griffin, Jr., Daniel G. Roper, Douglas J. Scheffler, Matthew W. Hanusa | 2018-08-07 |
| 9989977 | Mechanism and method to adjust size of balanced valve | Daniel G. Roper, Douglas J. Scheffler, 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, Douglas J. Scheffler, Jason D. Journey | 2018-04-24 |
| 9790972 | Heated fluid regulators | James Lyman Griffin, Jr. | 2017-10-17 |
| 9739381 | Mechanically retained valve seat | Michel Bouvry, Daniel Coestesquis, Daniel G. Roper | 2017-08-22 |
| 9664303 | Valve sound reducing trim assembly with pressure relief mechanism | James Lyman Griffin, Jr., Matthew W. Hanusa, Thomas L. Weyer, Daniel G. Roper | 2017-05-30 |
| 9470337 | Flow path velocity modifier for a control valve | Daniel G. Roper | 2016-10-18 |
| 9188233 | Positioning device for pressure regulator | Daniel G. Roper, Thomas L. Weyer | 2015-11-17 |
| 9145904 | Pilot operated fluid regulators having a reset apparatus and related methods | James Lyman Griffin, Jr., Daniel G. Roper, Douglas J. Scheffler, Jason D. Journey | 2015-09-29 |
| 9115825 | Valve sound reducing trim assembly with pressure relief mechanism | James Lyman Griffin, Jr., Matthew W. Hanusa, Thomas L. Weyer, Daniel G. Roper | 2015-08-25 |
| 9091366 | Flow restricted seat ring for pressure regulators | Thomas L. Weyer, Daniel G. Roper, James Lyman Griffin, Jr., Douglas J. Scheffler | 2015-07-28 |
| 9086702 | Pressure-balanced fluid pressure regulators | James Lyman Griffin, Jr., Daniel G. Roper, Jason Dirk Jablonski, Andrew Jared Lukensmeyer | 2015-07-21 |
| 8910661 | Valve sound reducing trim assembly with pressure relief mechanism | James Lyman Griffin, Jr., Matthew W. Hanusa, Thomas L. Weyer, Daniel G. Roper | 2014-12-16 |
| 8826933 | Positioning device for pressure regulator | Daniel G. Roper, Thomas L. Weyer | 2014-09-09 |
| 8740179 | Two-piece trim for use with fluid regulators | James Lyman Griffin, Jr., Thomas L. Weyer, Daniel G. Roper | 2014-06-03 |
| 8708309 | Self-aligning spring seat for fluid regulator and fluid regulator comprising self-aligning spring seat | Daniel G. Roper, Douglas J. Scheffler | 2014-04-29 |
| 8590858 | Anti-gradient cupped seat for pressure regulator | Daniel G. Roper, Douglas J. Scheffler | 2013-11-26 |
| 7896028 | Flow restricted seat ring for pressure regulators | Thomas L. Weyer, Daniel G. Roper, James Lyman Griffin, Jr., Douglas J. Scheffler | 2011-03-01 |
| 6968857 | Pressure reducing fluid regulators | James C. Hawkins, David Edwards Woollums, Neal A. Ackerman, Chun Lin, Erik M. Quijano | 2005-11-29 |