Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5045511 | Ceramic bodies formed from yttria stabilized zirconia-alumina | Cinta M. Kelzenberg, Kenneth R. Butcher | 1991-09-03 |
| 5023217 | Ceramic bodies formed from partially stabilized zirconia | Richard Todd Everhart, Kenneth R. Butcher, Matthias Hoffmann | 1991-06-11 |
| 4923830 | Ceramic bodies formed from partially stabilized zirconia | Richard Todd Everhart, Kenneth R. Butcher, Matthias Hoffmann | 1990-05-08 |