Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7555934 | Fluid permeation testing apparatus employing mass spectrometry | Fred L. DeRoos, Mark A. Roehrig | 2009-07-07 |
| 7552620 | Fluid permeation testing method employing mass spectrometry | Fred L. DeRoos, Mark A. Roehrig | 2009-06-30 |
| 6521461 | Fluoroalkene-nucleophile adducts for analysis and removal of fluoroalkenes | Donald F. Hagen, Yuri Cheburkov, Fred L. DeRoos, Glenn Delmont Johnson, John Stephen Marhevka +1 more | 2003-02-18 |
| 6437202 | Fluoroalkene-nucleophile adducts for analysis and removal of fluoroalkenes | Donald F. Hagen, Yuri Cheburkov, Fred L. DeRoos, Glenn Delmont Johnson, John Stephen Marhevka +1 more | 2002-08-20 |
| 6376065 | Fluorochemical benzotriazoles | Gary A. Korba, Robert A. Sinclair | 2002-04-23 |
| 6147268 | Fluoroalkene-nucleophile adducts for analysis and removal of fluoroalkenes | Donald F. Hagen, Yuri Cheburkov, Fred L. DeRoos, Glenn Delmont Johnson, John Stephen Marhevka +1 more | 2000-11-14 |