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Exfo Electro-Optical Engineering, Inc.

USPTO Granted Patents = 19

% Expired Patents = 52.6

Forward Citations = 285

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21 inventors (with patents filed for the assignee):

Gang He (7 out of 26 patents)

Gregory Walter Schinn (4 out of 7 patents)

Normand Cyr (4 out of 5 patents)

4. Daniel Gariépy (3 out of 3 patents)

5. François Babin (3 out of 3 patents)

6. Michel Leblanc (2 out of 10 patents)

7. Bernard Ruchet (2 out of 2 patents)

8. Martin Lamonde (2 out of 2 patents)

9. Daniel Gariépy (2 out of 2 patents)

10. Steeve Potvin (2 out of 2 patents)

11. François Babin (1 out of 15 patents)

12. Hongxin Chen (1 out of 9 patents)

13. Andre Rekai (1 out of 1 patent)

14. Vladislav Narojnyi (1 out of 1 patent)

15. Christian Olivier (1 out of 1 patent)

19 patents: Sort by Forward Citations

1. 7583727 - Single ended DMT test method for determining ADSL capability of cables (2009-09-01),

2. 7382810 - Widely-tunable laser apparatus (2008-06-03),

3. 7227645 - Method and apparatus for measuring polarization mode dispersion (2007-06-05),

4. 7187861 - Method and apparatus for testing optical networks (2007-03-06),

5. 7167655 - Measurement system for wide dynamic range optical power meter (2007-01-23),

6. 7116848 - Optical spectrum analyzer using a diffraction grating and multi-pass optics (2006-10-03),

7. 6992828 - Optical attentuator system (2006-01-31),

8. 6930776 - High optical rejection optical spectrum analyzer/monochromator (2005-08-16),

9. 6856398 - Method of and apparatus for making wavelength-resolved polarimetric measurements (2005-02-15),

10. 6819429 - Multi-pass optical spectrum analyzer having a polarization-dependent tunable filter (2004-11-16),

11. 6762829 - Measurement of optical properties of passive optical devices using the matrix method (2004-07-13),

12. 6724469 - Polarization-OTDR for measuring characteristics of optical fibers (2004-04-20),

13. 6636306 - Optical spectrum analyzer (2003-10-21),

14. 6621067 - Polarization independent photodetector device and method of making same (2003-09-16),

15. 6612750 - Adapter for interconnecting optical fiber connectors (2003-09-02),

Exfo Electro-Optical Engineering, Inc. is a leading provider of test and measurement solutions for the telecommunications and optical networks sectors. The company specializes in developing advanced technologies that enhance network performance and reliability, focusing on areas such as fiber optics, wireless, and cloud-based solutions. With a commitment to innovation, Exfo serves a global clientele, helping businesses optimize their network infrastructures and improve service delivery in an increasingly connected world.

Profile summary based on public USPTO records.

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USPTO Data Jan 1 1976 - Sep 29 2026

Exfo Electro-Optical Engineering, Inc.

19 Patents

#1 in Quebec City

#778 in Canada

#32,592 in the World

Exfo Electro-Optical Engineering, Inc.

Forward Citations = 285

21 inventors:

Gang He (7 out of 26 patents)

Gregory Walter Schinn (4 out of 7 patents)

Normand Cyr (4 out of 5 patents)

4. Daniel Gariépy (3 out of 3 patents)

5. François Babin (3 out of 3 patents)

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