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Ontario, Canada

Bay Mills Limited

USPTO Granted Patents = 52

Trademarks = 2

Forward Citations = 1,078

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38 inventors (with patents filed for the assignee):

Mark O Kittson (9 out of 13 patents)

John Frederick Porter (8 out of 26 patents)

Roy Shoesmith (6 out of 7 patents)

4. D Mark Woiceshyn (6 out of 6 patents)

5. Guy Guillemet (5 out of 15 patents)

6. Steve Kulawic (4 out of 4 patents)

7. Rosalene Brunka (4 out of 4 patents)

8. Terry J O'Connor (4 out of 4 patents)

9. Ian G Cooper (4 out of 4 patents)

10. Robert Hope (3 out of 4 patents)

11. John K Donaldson (2 out of 2 patents)

12. Felix Kurschner (2 out of 2 patents)

13. Lester Gidge (2 out of 7 patents)

14. Steve LePage (2 out of 2 patents)

15. Larry Ferris (2 out of 2 patents)

Core Competencies:

Foam-Filled Muntin Bar

Reinforcing Composite

Moisture Barrier Laminate

Insulating Spacer

Roofing Membrane

Screen Frame

Electric Fence Wire

Textiles

Paving Reinforcements

Thermoplastic Brace

Decorative Elements

52 patents: Sort by Forward Citations

1. 6192651 - Method of forming foam-filled decorative muntin bar for windows and the like (2001-02-27),

2. 6134857 - Structural corner reinforcement, a frame including such a reinforcement (2000-10-24),

3. 6035597 - Foam-filled decorative muntin bar for windows and the like (2000-03-14),

4. D415011 - Door handle with lock (1999-10-12),

5. 5960605 - Screen bar corner reinforcement, a screen frame including such a (1999-10-05),

6. 5931199 - Pressure-expandable conduit liner (1999-08-03),

7. 5921051 - Screen bar corner reinforcement, a screen frame including such a (1999-07-13),

8. 5911246 - Pressure-expandable conduit liner (1999-06-15),

9. 5895301 - Hand-tearable moisture barrier laminate (1999-04-20),

10. 5890289 - Method of making an insulating spacer for spacing apart panes of a (1999-04-06),

11. 5881521 - Hand-tearable moisture barrier laminate (1999-03-16),

12. 5873391 - Pressure-expandable conduit liner (1999-02-23),

13. 5869408 - Hand-tearable moisture barrier laminate (1999-02-09),

14. D402531 - Door handle (1998-12-15),

15. 5836357 - Pressure-expandable conduit liner (1998-11-17),

Company Overview

Bay Mills Limited, headquartered in Ontario, Canada, specializes in the development and manufacturing of innovative building materials. The company focuses on a range of core technologies, including foam-filled muntin bars, reinforcing composites, and moisture barrier laminates, which enhance the durability and efficiency of construction projects. Additionally, Bay Mills produces insulating spacers, roofing membranes, screen frames, electric fence wire, and textiles, positioning itself as a versatile player in the building materials sector.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

52 Patents

#3 in Ontario

#6,769 in Canada

#13,571 in the World

Ontario, Canada

Bay Mills Limited

Forward Citations = 1,078

38 inventors:

Mark O Kittson (9 out of 13 patents)

John Frederick Porter (8 out of 26 patents)

Roy Shoesmith (6 out of 7 patents)

4. D Mark Woiceshyn (6 out of 6 patents)

5. Guy Guillemet (5 out of 15 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Bay Mills Limited. Retrieved from https://idiyas.com/company/bay-mills

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]

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