Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7988753 | Method and apparatus for recovery and recycling of hydrogen | Dennis W. Keppers, Daniel M. Barrett, Larry L. Holt, Edward A. Bullerdiek, James H. Miller | 2011-08-02 |
| 7637970 | Method and apparatus for recovery and recycling of hydrogen | Dennis W. Keppers, Daniel M. Barrett, Larry L. Holt, Edward A. Bullerdiek, James H. Miller | 2009-12-29 |
| 5479340 | Real time control of plasma etch utilizing multivariate statistical analysis | Chandru Kappuswamy | 1995-12-26 |