Enter assignee name

% Expired Patents = 25.0

Forward Citations = 127

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11 inventors (with patents filed for the assignee):

Jeffrey Dean Wilson (4 out of 11 patents)

Wendall Siemens (3 out of 5 patents)

Derek W Logan (3 out of 21 patents)

4. Anthony Robert Dopf (2 out of 17 patents)

5. Paul L Camwell (2 out of 29 patents)

6. David A Switzer (1 out of 82 patents)

7. Jili Liu (1 out of 50 patents)

8. Timothy Neff (1 out of 4 patents)

9. Trang Le (1 out of 2 patents)

10. Dave Switzer (1 out of 2 patents)

11. David James Tostenson (1 out of 6 patents)

8 patents: Sort by Forward Citations

1. 7532540 - Fluid erosion protection washer for rotating shaft in MWD tool (2009-05-12),

2. 7462957 - Multi-conductor plug and socket apparatus (2008-12-09),

3. 7182695 - Assisted jump ride (2007-02-27),

4. 6902414 - Harsh environment rotatable connector (2005-06-07),

5. 6816053 - Circuit to mitigate transformer shorted turn (2004-11-09),

6. 6659496 - Trailer for hauling recreational and advertising equipment (2003-12-09),

7. 6390952 - Auto-belay rock climbing devices and modular climbing towers (2002-05-21),

8. 6083142 - Mobile, modular climbing tower (2000-07-04),

Extreme Engineering Ltd. is a leading provider of innovative engineering solutions for extreme environments. Specializing in high-risk industries such as oil and gas, mining, and construction, we offer a range of services including structural design, project management, and risk assessment. Our team of experienced engineers is dedicated to delivering safe, efficient, and cost-effective solutions for our clients.

Profile summary based on public USPTO records.

Company Badge

USPTO Data Jan 1 1976 - Oct 6 2026

8 Patents

#138 in Calgary

#1,878 in Canada

Calgary, Canada

Extreme Engineering Ltd.