Issued Patents All Time
Showing 26–50 of 51 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8546984 | Pump motor control assembly | Raymond D. Heilman, James P. Meagher, Jeffrey S. Sherman, John G. Schrader | 2013-10-01 |
| 8508166 | Power factor correction with variable bus voltage | Joseph G. Marcinkiewicz, Charles E. Green, John P. Powers | 2013-08-13 |
| 8358098 | System and method for power factor correction | Charles E. Green | 2013-01-22 |
| 7312970 | Low cost surge protection | — | 2007-12-25 |
| 7193388 | Offset PWM signals for multiphase motor | Charles E. Green | 2007-03-20 |
| 6768279 | Reprogrammable motor drive and control therefore | John Stephen Thorn, Craig J. Nordby, Joseph G. Mercinkiewicz | 2004-07-27 |
| 5936373 | Wide pole switched reluctance machine and method of its control | Yue Li | 1999-08-10 |
| 5877568 | Rotor position sensing system | Gregory Maes, Raymond D. Heilman, Steven P. Randall | 1999-03-02 |
| 5736823 | Constant air flow control apparatus and method | Craig J. Nordby, J. Stephen Thorn | 1998-04-07 |
| 5457375 | Sensorless commutation controller for a poly-phase dynamoelectric machine | Joseph G. Marcinkiewicz, J. Stephen Thorn | 1995-10-10 |
| 5447414 | Constant air flow control apparatus and method | Craig J. Nordby, John Stephen Thorn | 1995-09-05 |
| 5420492 | Method and apparatus of operating a dynamoelectric machine using DC bus current profile | Pradeep K. Sood, Douglas M. Petty | 1995-05-30 |
| 5084074 | Method and apparatus for separating and recovering water and light aromatic hydrocarbons from a gaseous stream | Gary L. Beer | 1992-01-28 |
| 4913245 | Wellbore drilling cuttings treatment | — | 1990-04-03 |
| 4881473 | Method and apparatus for treating oil-water-solids sludges and refinery waste streams | — | 1989-11-21 |
| 4839022 | Method and apparatus for treating oil-water-solids sludges and refinery waste streams | — | 1989-06-13 |
| 4733557 | Method and system for determining vapor pressure or composition of hydrocarbon liquids | Lloyd A. Baillie | 1988-03-29 |
| 4694901 | Apparatus for removal of wellbore particles | — | 1987-09-22 |
| 4683963 | Drilling cuttings treatment | — | 1987-08-04 |
| 4653586 | Method and apparatus for controlling sand accumulation in a producing wellbore | — | 1987-03-31 |
| 4615710 | Method and apparatus for discharging treated coal and controlling emissions from a heavy oil spray system | — | 1986-10-07 |
| 4547198 | Method for discharging treated coal and controlling emissions from a heavy oil spray system | — | 1985-10-15 |
| 4498905 | Method for deactivating and controlling the dusting tendencies of dried particulate lower rank coal | — | 1985-02-12 |
| 4467531 | Method and apparatus for controlling the discharge of particulate solids from an expanded bed of such solids | — | 1984-08-28 |
| 4396394 | Method for producing a dried coal fuel having a reduced tendency to spontaneously ignite from a low rank coal | Ying LI, Donald K. Wunderlich, J. David Matthews, Bernard F. Bonnecaze | 1983-08-02 |