Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10431987 | Methods and systems for maintaining photovoltaic power plant reactive power capability | Andrew Joseph Ponec | 2019-10-01 |
| 9866030 | Automatic voltage regulation for photovoltaic systems | Robert D. Johnson | 2018-01-09 |
| 9806665 | Methods and apparatus for controlling operation of photovoltaic power plants | — | 2017-10-31 |
| 9680301 | Master-slave architecture for controlling operation of photovoltaic power plants | William B. Peter, Robert D. Johnson | 2017-06-13 |
| 9300224 | Automatic voltage regulation for photovoltaic systems | Robert D. Johnson | 2016-03-29 |
| 9059604 | Methods and apparatus for controlling operation of photovoltaic power plants | — | 2015-06-16 |
| 9022020 | Linear Fresnel solar arrays and drives therefor | David R. Mills, Philipp Schramek, David DeGraaff, Peter L. Johnson, Alexander F. Hoermann | 2015-05-05 |
| 8922062 | Automatic voltage regulation for photovoltaic systems | Robert D. Johnson | 2014-12-30 |
| 4750879 | Bearing arrangement | — | 1988-06-14 |