Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6583521 | Energy management system which includes on-site energy supply | Martin L. Lagod, Alexander Guettel | 2003-06-24 |
| 4698289 | Process for making ferrite spherical particulate toner core from raw fly ash | Geoffrey H. Earl, David W. Trunko | 1987-10-06 |
| 4592988 | Ferrite toner carrier core composition derived from fly ash | Geoffrey H. Earl, David W. Trunko | 1986-06-03 |
| RE31540 | Separation of high grade magnetite from fly ash | — | 1984-03-20 |
| 4432868 | Separation of high grade magnetite from fly ash | — | 1984-02-21 |
| 4319988 | Separation of high grade magnetite from fly ash | — | 1982-03-16 |