Issued Patents 2004
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6712087 | Rotary valve assembly for pressure swing adsorption system | Charles C. Hill, Adam C. Hansen | 2004-03-30 |
| 6698423 | Methods and apparatus to generate liquid ambulatory oxygen from an oxygen concentrator | Scott C. Honkonen, Charles C. Hill, Graham Walker | 2004-03-02 |
| 6681764 | Methods and apparatus to generate liquid ambulatory oxygen from an oxygen concentrator | Scott C. Honkonen, Charles C. Hill, Graham Walker | 2004-01-27 |
| 6671911 | Continuous wave cushioned support | Charles C. Hill, Carly A. Anderson | 2004-01-06 |