For the Inventor, By the Inventor

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Calgary, Canada

Xact Downhole Telemetry, Inc.

USPTO Granted Patents = 15

CIPO Patents = 62

EPO Patents = 4

Forward Citations = 169

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31 inventors (with patents filed for the assignee):

Paul L Camwell (12 out of 29 patents)

James M Neff (6 out of 7 patents)

Douglas S Drumheller (5 out of 17 patents)

4. David D Whalen (4 out of 7 patents)

5. Derek W Logan (3 out of 21 patents)

6. John-Peter Van Zelm (2 out of 24 patents)

7. John Godfrey McRory (2 out of 11 patents)

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

9. Celine J Martineau (1 out of 3 patents)

10. Edwin I Hildebrandt (1 out of 1 patent)

11. Andrzej M Sendyk (1 out of 1 patent)

12. Wendall Siemens (1 out of 5 patents)

13. John G Mcrory (0 patent)

14. Wendall L Siemens (0 patent)

15. Derek William Logan (0 patent)

15 patents: Sort by Forward Citations

1. 10103846 - Robust telemetry repeater network system and method (2018-10-16),

2. 10060255 - Downhole low rate linear repeater relay network timing system and method (2018-08-28),

3. 9797241 - Acoustic transmitter for transmitting a signal through a downhole medium (2017-10-24),

4. 9458712 - Acoustic telemetry stacked-ring wave delay isolator system and method (2016-10-04),

5. 8982667 - Acoustic telemetry stacked-ring wave delay isolator system and method (2015-03-17),

6. 8922387 - Tapered thread EM gap sub self-aligning means and method (2014-12-30),

7. 8823543 - Telemetry wave detection apparatus and method (2014-09-02),

8. 8393412 - System and method for accurate wellbore placement (2013-03-12),

9. 8270251 - Acoustic isolator (2012-09-18),

10. 8115651 - Drill string telemetry methods and apparatus (2012-02-14),

11. 8022840 - Telemetry transmitter optimization using time domain reflectometry (2011-09-20),

12. 7928861 - Telemetry wave detection apparatus and method (2011-04-19),

13. 7872945 - Dynamic efficiency optimization of piezoelectric actuator (2011-01-18),

14. 7817061 - Telemetry transmitter optimization using time domain reflectometry (2010-10-19),

15. 6956791 - Apparatus for receiving downhole acoustic signals (2005-10-18),

XACT Downhole Telemetry, Inc. specializes in providing innovative downhole telemetry solutions. With cutting-edge technology and extensive industry experience, we offer advanced solutions for real-time measurements and data transmission in challenging oil and gas drilling environments. Our telemetry systems enable seamless communication between downhole tools and surface equipment, ensuring accurate monitoring and control for optimized drilling operations. Visit our website to learn more about our comprehensive range of telemetry solutions.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Dec 2 2025

15 Patents

#71 in Calgary

#941 in Canada

#38,649 in the World

Calgary, Canada

Xact Downhole Telemetry, Inc.

Forward Citations = 169

31 inventors:

Paul L Camwell (12 out of 29 patents)

James M Neff (6 out of 7 patents)

Douglas S Drumheller (5 out of 17 patents)

4. David D Whalen (4 out of 7 patents)

5. Derek W Logan (3 out of 21 patents)

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