Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6231047 | Brush seal | Matthew D. Cunningham, Robert Menendez, James A. Henderson, Chih-yuan Shia, William J. Casey | 2001-05-15 |
| 6176323 | Drilling systems with sensors for determining properties of drilling fluid downhole | John B. Weirich, Ronald G. Bland, Volker Krueger, John W. Harrell, Hatem Nasr +1 more | 2001-01-23 |
| 4995231 | Performance arcjet thruster | Richard D. Smith, Steve Knowles, R. J. Cassady, Mark A. Simon | 1991-02-26 |
| 4926632 | Performance arcjet thruster | Richard D. Smith, Steve Knowles, R. J. Cassady, Mark A. Simon | 1990-05-22 |
| 4907407 | Lifetime arcjet thruster | Mark A. Simon, Steve Knowles | 1990-03-13 |
| 4882465 | Arcjet thruster with improved arc attachment for enhancement of efficiency | Steven C. Knowles | 1989-11-21 |
| 4866929 | Hybrid electrothermal/electromagnetic arcjet thruster and thrust-producing method | Steve Knowles | 1989-09-19 |
| 4813025 | Safety alert and locating system | David B. Rowland | 1989-03-14 |
| 4800716 | Efficiency arcjet thruster with controlled arc startup and steady state attachment | Steven C. Knowles | 1989-01-31 |
| 4480966 | Apparatus for converting the surface motion of a liquid body into usable power | — | 1984-11-06 |