Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5368738 | Oxidized activated carbon for the control of pH and alkalinity in water treatment applications | Richard A. Hayden | 1994-11-29 |
| 5368739 | Activated carbon oxidized by air at near ambient temperatures for the control of ph and in water treatment applications | Richard A. Hayden, John R. Lutchko, Kishio Yoshino, Satoru Hisaki, Fujito Ehara | 1994-11-29 |