Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10920896 | Top entry axial flow regulator | James Lyman Griffin, Jr., Daniel G. Roper, Douglas J. Scheffler, Harold J. McKinney | 2021-02-16 |
| 10041602 | Top entry axial flow regulator | James Lyman Griffin, Jr., Daniel G. Roper, Douglas J. Scheffler, Harold J. McKinney | 2018-08-07 |
| 9664303 | Valve sound reducing trim assembly with pressure relief mechanism | James Lyman Griffin, Jr., Thomas L. Weyer, Daniel G. Roper, Harold J. McKinney | 2017-05-30 |
| 9115825 | Valve sound reducing trim assembly with pressure relief mechanism | James Lyman Griffin, Jr., Thomas L. Weyer, Daniel G. Roper, Harold J. McKinney | 2015-08-25 |
| 8910661 | Valve sound reducing trim assembly with pressure relief mechanism | James Lyman Griffin, Jr., Thomas L. Weyer, Daniel G. Roper, Harold J. McKinney | 2014-12-16 |
| 8556233 | Field removable bonnet assemblies for use with valves | Chun Lin, Roy Ronald Pelfrey, Eric Alan Miller | 2013-10-15 |
| 8146885 | Field removable bonnet assemblies for use with valves | Chun Lin, Roy Ronald Pelfrey, Eric Alan Miller | 2012-04-03 |