Issued Patents All Time
Showing 51–75 of 77 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9071183 | Methods and systems for providing combined blower motor and draft inducer motor control | Ludovic Andre Chretien | 2015-06-30 |
| 8981686 | Methods and systems for controlling an electric motor | Ludovic Andre Chretien, Glen C. Young, David Allen Clendenen, Yao Da | 2015-03-17 |
| 8963478 | Drive circuits and systems for motor controller protection | Yao Da, David Allen Clendenen | 2015-02-24 |
| 8917042 | Methods and systems for reducing conducted electromagnetic interference | Yao Da | 2014-12-23 |
| 8896248 | Methods and systems for controlling a motor | Ludovic Andre Chretien, Mark A. Brattoli, Glen C. Young | 2014-11-25 |
| 8847526 | Methods and systems for automatic rotation direction determination of electronically commutated motor | Stephen Solan, Jr., Brian L. Beifus | 2014-09-30 |
| 8766573 | Systems for heating, ventilation, and air conditioning applications | Steven A. Nardin, Michael R. Koller, Andrew C. Barry, Brian L. Beifus, Andrew M. Knollman | 2014-07-01 |
| 8487562 | Methods and systems for automatic rotation direction determination of electronically commutated motor | Stephen Solan, Jr., Brian L. Beifus | 2013-07-16 |
| 8362725 | Retrofit motor system for heating, ventilation, and air conditioning applications | Steven A. Nardin, Michael R. Koller, Andrew C. Barry, Brian L. Beifus, Andrew M. Knollman | 2013-01-29 |
| 8143828 | Retrofit motor system for heating, ventilation, and air conditioning applications | Steven A. Nardin, Michael R. Koller, Andrew C. Barry, Brian L. Beifus, Andrew M. Knollman | 2012-03-27 |
| 8111029 | Methods and systems for automatic rotation direction determination of electronically commutated motor | Stephen Solan, Jr., Brian L. Beifus | 2012-02-07 |
| 7573217 | Methods and systems for automatic rotation direction determination of electronically commutated motor | Stephen Solan, Jr., Brian L. Beifus | 2009-08-11 |
| 7106019 | Digital communication link | William R. Archer, Brian L. Beifus, Mark A. Brattoli | 2006-09-12 |
| 6895176 | Method and apparatus for controlling electronically commutated motor operating characteristics | William R. Archer, Brian L. Beifus, Kamron Mark Wright | 2005-05-17 |
| 6456023 | Method and apparatus to control a variable speed motor | Dirk van der Duim, Mark A. Brattoli | 2002-09-24 |
| 6423118 | Methods and systems for controlling air filtration systems | Brian L. Beifus, William R. Archer | 2002-07-23 |
| 6215261 | Application specific integrated circuit for controlling power devices for commutating a motor based on the back emf of motor | — | 2001-04-10 |
| 6046554 | Method and apparatus for calibrating a permanent-magnet motor using back EMF measurement | — | 2000-04-04 |
| 6008560 | Inverter driven motor having winding termination reducing EMI | — | 1999-12-28 |
| 5994869 | Power conversion circuit for a motor | — | 1999-11-30 |
| 5986419 | Quadrature axis winding for sensorless rotor angular position control of single phase permanent magnet motor | William R. Archer, Brian L. Beifus, Mark A. Brattoli, David M. Erdman, Thomas Merlin Jahns +5 more | 1999-11-16 |
| 5886512 | Low power and wide input voltage range DC to DC switching converter | — | 1999-03-23 |
| 5796194 | Quadrature axis winding for sensorless rotor angular position control of single phase permanent magnet motor | William R. Archer, Brian L. Beifus, Mark A. Brattoli, David M. Erdman, Thomas Merlin Jahns +5 more | 1998-08-18 |
| 5692385 | System and method initiating defrost in response to speed or torque of evaporator motor | Robert K. Hollenbeck, Brian L. Beifus, Richard S. Tatman, William Hittie | 1997-12-02 |
| 5675231 | Systems and methods for protecting a single phase motor from circulating currents | Mark A. Brattoli | 1997-10-07 |