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Waterloo, Canada

Northern Digital Inc.

USPTO Granted Patents = 42

CIPO Patents = 6

EPO Patents = 4

Trademarks = 11

Forward Citations = 1,783

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48 inventors (with patents filed for the assignee):

Stefan R Kirsch (11 out of 11 patents)

Mark R Schneider (7 out of 36 patents)

Westley S Ashe (6 out of 19 patents)

4. Georg Brunner (6 out of 6 patents)

5. Stephen Eldon Leis (5 out of 5 patents)

6. Christian J Schilling (5 out of 5 patents)

7. Athanasios Tommy Balkos (5 out of 5 patents)

8. Larry Chen (5 out of 5 patents)

9. Shaulaine White (5 out of 5 patents)

10. John M Nieminen (4 out of 5 patents)

11. Andrew Wiles (3 out of 3 patents)

12. Nikolai Mikuszeit (3 out of 3 patents)

13. Derek Peter Zwambag (3 out of 3 patents)

14. Richard Van Wijngaarden (2 out of 2 patents)

15. Paul David Clausen (2 out of 2 patents)

Core Competencies:

Electromagnetic Tracking

Position Measurement

Retro-Reflective Markers

Sensor Calibration

Magnetic Field Distortion

Eddy Current Detection

Tracking Systems

Coordinate Systems

Ferrofluid Sensors

Interference Reduction

Three-Dimensional Tracking

Optical Sensors

42 patents: Sort by Forward Citations

1. 12498509 - Retro-reflective disc target having exposed retro-reflective beads (2025-12-16),

2. 12324633 - Electromagnetic sensor (2025-06-10),

3. 12313867 - Textured retro-reflective marker (2025-05-27),

4. 12274515 - Electromagnetic position measurement system with sensor parasitic loop compensation (2025-04-14),

5. 12271009 - Retro-reflective marker with uniformly distributed microelements (2025-04-08),

6. 12257005 - Tracking a sensor that includes a ferrofluid (2025-03-25),

7. 12207888 - Magnetic tracking calibration via distortion correction for electromagnetic fields using inside-out tracking (2025-01-28),

8. 12178564 - Electromagnetic tracking and position measurement system having interference reduction from nearby instrumentation by filtering time-division multiplexed signal via step function (2024-12-31),

9. 12078825 - Textured retro-reflective marker (2024-09-03),

10. 12039751 - Error compensation for a three-dimensional tracking system (2024-07-16),

11. 11953349 - Reconfigurable transmitter array for electromagnetic tracking systems (2024-04-09),

12. 11883115 - Electromagnetic position measurement system with sensor parasitic loop compensation (2024-01-30),

13. 11612086 - Self-contained electromagnetic tracking unit (2023-03-21),

14. 11604057 - Calibrating a magnetic transmitter (2023-03-14),

15. 11529193 - Tracking a sensor that includes a ferrofluid (2022-12-20),

Northern Digital Inc. is a global leader in providing innovative motion capture and 3D measurement technology solutions. With over 35 years of experience, they specialize in the design, development, and manufacturing of optical, electromagnetic, and hybrid motion capture systems. Their advanced solutions are used in a wide range of industries including medical, biomechanics, animation, robotics, and more. Northern Digital Inc.'s dedication to delivering precise, reliable, and customizable products has made them a trusted partner for research institutions, OEMs, and technology integrators worldwide.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Dec 23 2025

42 Patents

#14 in Waterloo

#313 in Canada

#15,852 in the World

Waterloo, Canada

Northern Digital Inc.

Forward Citations = 1,783

48 inventors:

Stefan R Kirsch (11 out of 11 patents)

Mark R Schneider (7 out of 36 patents)

Westley S Ashe (6 out of 19 patents)

4. Georg Brunner (6 out of 6 patents)

5. Stephen Eldon Leis (5 out of 5 patents)

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