Issued Patents All Time
Showing 1–25 of 76 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11471662 | High efficiency blood pump | Greg S. Aber | 2022-10-18 |
| 11142997 | Flow transported obturating tool and method | — | 2021-10-12 |
| 11085278 | Top-down fracturing system | John A. Barton | 2021-08-10 |
| 11072985 | Unlocking and unblocking tool for disconnect assembly for cylindrical members | John A. Barton | 2021-07-27 |
| 11065437 | Cardiac support systems and methods for chronic use | Greg S. Aber, Randolph K. Armstrong | 2021-07-20 |
| 10975661 | Top-down fracturing systems and methods | — | 2021-04-13 |
| 10731445 | Top-down fracturing system | John A. Barton | 2020-08-04 |
| 10568998 | High efficiency blood pump | Greg S. Aber | 2020-02-25 |
| 10449277 | Cardiac support systems and methods for chronic use | Greg S. Aber, Randolph K. Armstrong | 2019-10-22 |
| 9512683 | Disconnect assembly for cylindrical members | John A. Barton | 2016-12-06 |
| 9415147 | High efficiency blood pump | Greg S. Aber | 2016-08-16 |
| 9227001 | High efficiency blood pump | Greg S. Aber | 2016-01-05 |
| 8551163 | Cardiac support systems and methods for chronic use | Greg S. Aber, Randolph K. Armstrong | 2013-10-08 |
| 8393241 | Sequential gear shifting mechanism | Daniel O. Dewey | 2013-03-12 |
| 7353697 | System for mounting an engine to a frame | Daniel O. Dewey | 2008-04-08 |
| 5513703 | Methods and apparatus for perforating and treating production zones and otherwise performing related activities within a well | Aubrey C. Mills, Billy R. Newman, John A. Barton | 1996-05-07 |
| 5465786 | Subsurface tubing safety valve | — | 1995-11-14 |
| 5413173 | Well apparatus including a tool for use in shifting a sleeve within a well conduit | Aubrey C. Mills, Billy R. Newman, John A. Barton | 1995-05-09 |
| 5411096 | Surface controlled, subsurface tubing safety valve | — | 1995-05-02 |
| 5358053 | Subsurface safety valve | — | 1994-10-25 |
| 5295907 | Rorque limiting device | — | 1994-03-22 |
| 5263847 | Subsurface tubing safety valve | Thomas Buckner | 1993-11-23 |
| 5195721 | Fail safe valve actuator | — | 1993-03-23 |
| 5193615 | Apparatus for use in controlling flow through a tubing string suspended and packed off within well bore as well as within the annulus between the tubing string and well bore above and below the packer | — | 1993-03-16 |
| 5176220 | Subsurface tubing safety valve | — | 1993-01-05 |