Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10112724 | Apparatus for preventing spark propagation | Michael E. Rorabaugh, James P. Irwin, Benjamin A. Johnson | 2018-10-30 |
| 9995418 | Bulkhead fitting assembly | James P. Irwin, David William Minteer, Benjamin A. Johnson | 2018-06-12 |
| 9989176 | Bulkhead fitting assembly and method of sealing a bulkhead opening | James P. Irwin, David William Minteer, Benjamin A. Johnson | 2018-06-05 |
| 9885434 | Bulkhead fitting assembly and method of making | James P. Irwin, David William Minteer, Benjamin A. Johnson | 2018-02-06 |
| 9080694 | Bulkhead fitting assembly | James P. Irwin, David William Minteer, Benjamin A. Johnson | 2015-07-14 |
| 8840740 | Apparatus for preventing spark propagation | Michael E. Rorabaugh, James P. Irwin, Benjamin A. Johnson | 2014-09-23 |