Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9821528 | Method for lubricating pressure relief valves | Karl K. Hoffman, Thomas J. Roberts | 2017-11-21 |
| 8820381 | Apparatus and method for tin-tie application | Karl K. Hoffman, Tom Scott Roberts, Clay Ladd, Arthur A. Sagy | 2014-09-02 |
| 8522926 | Apparatus and method for lubricating pressure relief valves | Karl K. Hoffman, Thomas J. Roberts | 2013-09-03 |
| 8082644 | Apparatus for the application of pressure relief valves | Karl K. Hoffman, Thomas J. Roberts | 2011-12-27 |
| 7472524 | Method for the application of pressure relief valves | Karl K. Hoffman, Vladimir Prive, Tom Scott Roberts | 2009-01-06 |
| 7328543 | Apparatus and method for the application of pressure relief valves | Karl K. Hoffman, Vladimir Prive, Tom Scott Roberts | 2008-02-12 |
| 6287721 | Process for manufacturing electrochemical cells | Like Xie, Thomas John Roberts, Zhiwei Zang, Mohammed Alamgir | 2001-09-11 |