Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7794523 | Method for the recovery and re-use of process gases | — | 2010-09-14 |
| 7263858 | Method and apparatus for producing a purified liquid | — | 2007-09-04 |
| 6955707 | Method of recycling fluorine using an adsorption purification process | Edward Frederick Ezell, Richard Hogle, Graham McFarlane | 2005-10-18 |
| 6912872 | Method and apparatus for producing a purified liquid | — | 2005-07-05 |
| 6576044 | Process for the purification of nitric oxide | Dustin W. Ho, Deming Tang | 2003-06-10 |
| 6019948 | Apparatus and method for purifying boron trichloride by removal of phosgene | Edward Deming Tang, Edward Frederick Ezell | 2000-02-01 |
| 5833814 | Apparatus and method for purifying boron trichloride by removal of phosgene | Edward Deming Tang, Edward Frederick Ezell | 1998-11-10 |
| 5735141 | Method and apparatus for purifying a substance | — | 1998-04-07 |
| 5373701 | Cryogenic station | Kevin L. Siefering | 1994-12-20 |
| 5304796 | Atmospheric pressure ionization mass spectroscopy method including a silica gel drying step | Kevin L. Siefering | 1994-04-19 |
| 5213769 | Mixture forming method and apparatus | — | 1993-05-25 |
| 5005362 | Cryogenic storage container | William R. Weltmer, Jr. | 1991-04-09 |
| 4806171 | Apparatus and method for removing minute particles from a substrate | William R. Weltmer, Jr., James D. Clark | 1989-02-21 |
| 4579723 | Methods for purifying inert gas streams | William R. Weltmer, Jr. | 1986-04-01 |