% Expired Patents = 16.7

Forward Citations = 245

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13 inventors (with patents filed for the assignee):

David Demmer (1 out of 10 patents)

Lothar Lilge (1 out of 8 patents)

Xijia Gu (1 out of 2 patents)

4. Dwayne R J Miller (1 out of 5 patents)

5. Dejan Grozdanovski (1 out of 1 patent)

6. Marc Nantel (1 out of 1 patent)

7. David J Walsh (1 out of 3 patents)

8. Barry Bruner (1 out of 1 patent)

9. Robin Chi-Hung Tam (1 out of 1 patent)

10. Jingming Xu (1 out of 13 patents)

11. Robert A Weersink (1 out of 1 patent)

12. Michael S Patterson (1 out of 1 patent)

13. Xiaoli Fu (1 out of 1 patent)

6 patents: Sort by Forward Citations

1. 6621060 - Autofocus feedback positioning system for laser processing (2003-09-16),

2. 6529540 - Variable output coupling laser (2003-03-04),

3. 6514277 - Fiber optic multitasking probe (2003-02-04),

4. 6398778 - Optical fiber diffuser (2002-06-04),

5. 6219566 - Method of measuring concentration of luminescent materials in turbid media (2001-04-17),

6. 5970190 - Grating-in-etalon polarization insensitive wavelength division (1999-10-19),

Company Overview

Photonics Research Ontario is a non-profit organization dedicated to advancing photonics research, technology and innovation in Ontario. With a focus on collaboration and partnership, PRO brings together industry, academia, and government to drive growth and excellence in the photonics industry.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

6 Patents

#240 in Toronto

#2,420 in Canada

Toronto, Canada

Photonics Research Ontario

Forward Citations = 245

13 inventors:

David Demmer (1 out of 10 patents)

Lothar Lilge (1 out of 8 patents)

Xijia Gu (1 out of 2 patents)

4. Dwayne R J Miller (1 out of 5 patents)

5. Dejan Grozdanovski (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Photonics Research Ontario. Retrieved from https://idiyas.com/company/photonics-research-ontario

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]