Growing community of inventors

Guelph, Canada

Bill Witherspoon

Average Co-Inventor Count = 1.59

ph-index = 15

The patent ph-index is calculated by counting the number of publications for which an author has been cited by other authors at least that same number of times.

Forward Citations = 1,083

Bill WitherspoonLester Hensley (16 patents)Bill WitherspoonWalter Jones (1 patent)Bill WitherspoonBill Witherspoon (22 patents)Lester HensleyLester Hensley (34 patents)Walter JonesWalter Jones (2 patents)
..
Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Emseal Joint Systems, Ltd. (21 from 37 patents)

2. Emseal Joint Sytstems Ltd. (1 from 1 patent)


22 patents:

1. 10941562 - Fire and water resistant expansion joint system

2. 10934702 - Fire and water resistant expansion joint system

3. 10934704 - Fire and/or water resistant expansion joint system

4. 10851542 - Fire and water resistant, integrated wall and roof expansion joint seal system

5. 10787805 - Fire and/or water resistant expansion and seismic joint system

6. 10787806 - Fire and/or water resistant expansion and seismic joint system

7. 10570611 - Method of making a water resistant expansion joint system

8. 10422127 - Precompressed foam expansion joint system transition

9. 10072413 - Precompressed foam expansion joint system transition

10. 10066387 - Precompressed foam expansion joint system transition

11. 9689157 - Fire and water resistant expansion and seismic joint system

12. 9689158 - Fire and water resistant expansion and seismic joint system

13. 9670666 - Fire and water resistant expansion joint system

14. 9644368 - Fire and water resistant expansion joint system

15. 9637915 - Factory fabricated precompressed water and/or fire resistant expansion joint system transition

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as of
1/1/2026
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