PS

P. Karl Scheller

AM Allegro Microsystems: 50 patents #9 of 406Top 3%
DG Data General: 1 patents #167 of 327Top 55%
📍 Bow, NH: #6 of 77 inventorsTop 8%
🗺 New Hampshire: #139 of 12,181 inventorsTop 2%
Overall (All Time): #52,275 of 4,157,543Top 2%
51
Patents All Time

Issued Patents All Time

Showing 26–50 of 51 patents

Patent #TitleCo-InventorsDate
9151771 Apparatus and method for providing an output signal indicative of a speed of rotation and a direction of rotation of a ferromagnetic object Ravi Vig, Paul A. David 2015-10-06
9151807 Circuits and methods for generating a self-test of a magnetic field sensor Andreas P. Friedrich, Andrea Foletto, Michael C. Doogue, William P. Taylor, Ravi Vig 2015-10-06
9081041 High accuracy differential current sensor for applications like ground fault interrupters Andreas P. Friedrich, Andrea Foletto, William P. Taylor, Michael C. Doogue 2015-07-14
9007054 Angle sensor with misalignment detection and correction Andreas P. Friedrich, Andrea Foletto, William P. Taylor, Michael C. Doogue 2015-04-14
8994369 Apparatus and method for providing an output signal indicative of a speed of rotation and a direction of rotation of a ferromagnetic object Ravi Vig, Paul A. David 2015-03-31
8896295 Magnetic field sensor having multiple sensing elements and a programmable misalignment adjustment device for misalignment detection and correction in current sensing and other applications Andreas P. Friedrich, Andrea Foletto, William P. Taylor, Michael C. Doogue 2014-11-25
8860404 Magnetic field sensors and related techniques that can provide a self-test using signals and related thresholds Daniel S. Dwyer, Christine Graham 2014-10-14
8818749 Circuits and methods for generating a self-test of a magnetic field sensor Andreas P. Friedrich, Andrea Foletto, Michael C. Doogue, William P. Taylor, Ravi Vig 2014-08-26
8754640 Magnetic field sensors and related techniques that can provide self-test information in a formatted output signal Ravi Vig, Devon Fernandez, Christine Graham, Paul A. David 2014-06-17
8723512 Circuits and methods for generating a threshold signal used in a magnetic field sensor based on a peak signal associated with a prior cycle of a magnetic field signal Eric Burdette, James M. Bailey, Daniel S. Dwyer, Jeff Eagen, Glenn A. Forrest +2 more 2014-05-13
8624588 Apparatus and method for providing an output signal indicative of a speed of rotation and a direction of rotation as a ferromagnetic object Ravi Vig, Paul A. David 2014-01-07
8447556 Circuits and methods for generating a self-test of a magnetic field sensor Andreas P. Friedrich, Andrea Foletto, Michael C. Doogue, William P. Taylor, Ravi Vig 2013-05-21
8089270 Magnetic field detector having a variable threshold Ravi Vig 2012-01-03
8058864 Circuits and methods for providing a magnetic field sensor with an adaptable threshold Andreas P. Friedrich, William P. Taylor 2011-11-15
8022692 Direction detection sensor Devon Fernandez, William P. Taylor, Michael Morris, Eric G. Shoemaker 2011-09-20
7800389 Integrated circuit having built-in self-test features Andreas P. Friedrich, Andrea Foletto, Paul A. David 2010-09-21
6693419 Proximity detector Jason Stauth, Glenn A. Forrest, Ravi Vig, Jay M. Towne 2004-02-17
6525531 Detection of passing magnetic articles while adapting the detection threshold Glenn A. Forrest 2003-02-25
6297627 Detection of passing magnetic articles with a peak-to-peak percentage threshold detector having a forcing circuit and automatic gain control Jay M. Towne, Ravi Vig 2001-10-02
6242908 Detection of passing magnetic articles while adapting the detection threshold Glenn A. Forrest 2001-06-05
6232768 Centering a signal within the dynamic range of a peak detecting proximity detector Kristann L. Moody, Ravi Vig, Jay M. Towne, Teri L. Tu 2001-05-15
6100680 Detecting the passing of magnetic articles using a transducer-signal detector having a switchable dual-mode threshold Ravi Vig, Jay M. Towne 2000-08-08
5917320 Detection of passing magnetic articles while periodically adapting detection threshold Ravi Vig, Jay M. Towne, Hitoshi Yabusaki 1999-06-29
5694038 Detector of passing magnetic articles with automatic gain control Kristann L. Moody, Ravi Vig, Jay M. Towne, Teri L. Tu 1997-12-02
5650719 Detection of passing magnetic articles while periodically adapting detection thresholds to changing amplitudes of the magnetic field Kristann L. Moody, Ravi Vig, Jay M. Towne, Teri L. Tu 1997-07-22