Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7265521 | Reactive power compensation to minimize step voltage changes and transients | Arnold P. Kehrli, Douglas C. Folts | 2007-09-04 |
| 7091703 | Dynamic reactive compensation system and method | Douglas C. Folts, William Vareka, Arnold P. Kehrli | 2006-08-15 |
| 6987331 | Voltage recovery device for use with a utility power network | Paul F. Koeppe, Arnold P. Kehrli, Donald L. Brown, Warren Elliott Buckles, Douglas C. Folts | 2006-01-17 |
| 6906434 | Electric utility system with superconducting magnetic energy storage | Paul F. Koeppe, Arnold P. Kehrli, Donald L. Brown, Warren Elliott Buckles, Douglas C. Folts | 2005-06-14 |
| 6900619 | Reactive power compensation to minimize step voltage changes and transients | Arnold P. Kehrli, Douglas C. Folts | 2005-05-31 |