Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6787044 | High frequency wave heated plasma mass filter | Richard L. Freeman, John Rogers Gilleland, Tihiro Ohkawa | 2004-09-07 |
| 6726844 | Isotope separator | Tihiro Ohkawa | 2004-04-27 |