Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11015401 | Downhole friction reduction tools | Danny L. Gordon, Zachary Driver | 2021-05-25 |
| D917582 | Roller valve rod guide | Zach Driver | 2021-04-27 |
| 10859071 | Rotary traveling valve | — | 2020-12-08 |
| D864352 | Dual port rotary valve | — | 2019-10-22 |
| D805114 | Traveling rotary valve | — | 2017-12-12 |
| 9376912 | Apparatus and method for anchor bolt grouting | Phillip Edwin Gramlich, Jr. | 2016-06-28 |
| 9120614 | Method for preserving the firmness and internal pressure of a resin cartridge and improving the shelf-life of a resin cartridge | Phillip Edwin Gramlich, Jr., Jeffrey T. Gotro, George Pesansky, James Edward Pinkley | 2015-09-01 |
| 8539992 | Apparatus and method for anchor bolt grouting | Phillip Edwin Gramlich, Jr. | 2013-09-24 |
| 6060523 | Continuous process for preparing microgels | Robert Harvey Moffett, Walter John Simmons | 2000-05-09 |
| 4534715 | Traveling valve assembly | — | 1985-08-13 |