Issued Patents All Time
Showing 1–24 of 24 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10903830 | Short-circuit protection for a power semiconductor device | Daniel J. Conti, Edward C. Prather, Norman Davies, Brian C. Langford, Ronald D. Hreha +1 more | 2021-01-26 |
| 9001476 | Multimotor variable frequency overload | Gregory A. Helton, Mark E. Innes | 2015-04-07 |
| 8138709 | Control method and system | David M. Messersmith | 2012-03-20 |
| 7965086 | Differential-mode current sensor method | — | 2011-06-21 |
| 7965085 | Differential-mode current sensor | — | 2011-06-21 |
| 7907375 | Self powered electronic overload method and system | Gregory A. Helton, Mark E. Innes | 2011-03-15 |
| 7741853 | Differential-mode-current-sensing method and apparatus | — | 2010-06-22 |
| 7615988 | Wide range current sensing method and system | — | 2009-11-10 |
| 7463462 | Nuisance trip reducing motor control system and method | Roger Alan Plemmons, Gregory A. Helton | 2008-12-09 |
| 7394629 | Motor overload tripping system and method with multi-function circuit interrupter | Roger Alan Plemmons, Gregory A. Helton, Mark E. Innes, Ricky A. Hurley | 2008-07-01 |
| 7031156 | Reduced package volume convectively cooled sealed electrical system and method | Matthew W. Naiva, Roger Alan Plemmons | 2006-04-18 |
| 7019951 | Extended trip range motor control system and method | Roger Alan Plemmons, Gregory A. Helton, Mark E. Innes, Ricky A. Hurley | 2006-03-28 |
| 6995964 | Combination-type motor control with extended current range | Roger Alan Plemmons, Gregory A. Helton | 2006-02-07 |
| 6943537 | Magnetic flux sensor and method | — | 2005-09-13 |
| 6774618 | Magnetic flux sensor and method | — | 2004-08-10 |
| 6456059 | Non-homogeneous material magnetic flux sensor and method | — | 2002-09-24 |
| 6184673 | Active reset current sensor with measurement feedback | — | 2001-02-06 |
| 5959818 | Method and apparatus for self-powered three-phase sensing to determine true RMS current values with separate burdens for each current transformer | — | 1999-09-28 |
| 5815357 | Method and apparatus for three-phase sensing using two current transformers | Mark E. Innes | 1998-09-29 |
| 5774323 | Detection of contact position from coil current in electromagnetic switches having AC or DC operated coils | Mark E. Innes | 1998-06-30 |
| 5761018 | Variable thermal model overload in electrical switching apparatus | — | 1998-06-02 |
| 5661643 | Universal power module | Robert T. Elms | 1997-08-26 |
| 5652507 | Apparatus and method for measuring an AC current which saturates the core of a current transformer | — | 1997-07-29 |
| 5608311 | AC input for digital processor with capacitively coupled immunity and surge withstand | Mark E. Innes | 1997-03-04 |