Issued Patents 2002
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6461411 | Method and materials for purifying hydride gases, inert gases, and non-reactive gases | Tadaharu Watanabe | 2002-10-08 |
| 6425946 | Method and apparatus for removing trace impurities from a gas using superactivated carbon material | Hans H. Funke, Virginia H. Houlding | 2002-07-30 |
| 6395070 | Methods for removal of impurity metals from gases using low metal zeolites | Paul M. Bhadha, Tadaharu Watanabe | 2002-05-28 |