Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12253484 | Large format-fractional thermal runaway calorimeter | Steven L. Rickman, William Q. Walker, John J. Darst, Damien T. Calderon, Richard A. Hagen +3 more | 2025-03-18 |
| 11201358 | Systems and methods for measuring a heat response of a battery cell in thermal runaway | Eric C Dimpault-Darcy, John J. Darst, William Q. Walker, Steven L. Rickman, Natalie N. Anderson +3 more | 2021-12-14 |
| 10581034 | Battery assembly | Charles R. Longabaugh | 2020-03-03 |
| 5720541 | Illuminating writing instrument | — | 1998-02-24 |
| 5429894 | Silver-iron battery | George D. Leap | 1995-07-04 |
| 5426004 | Separator systems for silver-iron batteries | George D. Leap | 1995-06-20 |