David A Switzer

This inventor holds 82 USPTO granted patents and 4 published patent applications, plus 21 CIPO patents and 9 EPO patents, primarily in Downhole Telemetry (CPC class E21B47-122). Top assignees: Evolution Engineering Inc., Quantum Energy Technologies LLC, Schlumberger Technology Corporation. Active years: 2005-2026.

USPTO Granted Patents = 82 (Patent Applications = 4)

% Patents Active = 96.3

CIPO Patents = 21

EPO Patents = 9 (Patent Applications = 24)

Average Co-Inventor Count = 4.1

ph-index = 9

Forward Citations = 254(Granted Patents)

Forward Citations (Not Self Cited) = 212(Dec 10, 2025)

Inventors with similar research interests:

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Company Filing History:

74 out of 128

Evolution Engineering Inc.

patents

3 out of 11

Quantum Energy Technologies LLC

patents

2 out of 10,706

Schlumberger Technology Corporation

patents

4. 1 out of 8

Extreme Engineering Ltd.

patents

5. 2 out of 834,350

Other

patents

Years Active: 2005-2026

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Areas of Expertise:

Downhole Telemetry

Electromagnetic Communication

Data Transmission

Probe Integration

Mud Pulse Telemetry

Telemetry Subsystems

Pressure Transducer

Directional Drilling

Sensor Alignment

Data Communication

Electromagnetic Signals

Downhole Probes

82 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 12692754 - External gap assembly (2026-07-28),

2. 11976758 - Electrically insulated threaded connection (2024-05-07),

3. 11649720 - Integrated downhole system with plural telemetry subsystems (2023-05-16),

4. 11391105 - Downhole pulse generation (2022-07-19),

5. 11359483 - Integrated downhole system with plural telemetry subsystems (2022-06-14),

6. 11073015 - Integrated downhole system with plural telemetry subsystems (2021-07-27),

7. 10954781 - Multi-mode control of downhole tools (2021-03-23),

8. 10901108 - Method and apparatus for placing receiver electrodes for EM telemetry transmissions (2021-01-26),

9. 10753201 - Mud pulse telemetry apparatus with a pressure transducer and method of operating same (2020-08-25),

10. 10731459 - Integrated downhole system with plural telemetry subsystems (2020-08-04),

11. 10729029 - Mounting and component holder apparatuses and assemblies for holding rigid components (2020-07-28),

12. 10598000 - Methods and apparatus for downhole probes (2020-03-24),

13. 10570726 - Detection of downhole data telemetry signals (2020-02-25),

14. 10563503 - Transmitting data across electrically insulating gaps in a drill string (2020-02-18),

15. 10513892 - Rotary locking sub for angular alignment of downhole sensors with high side in directional drilling (2019-12-24),

Title: David A Switzer - Inventor from Calgary, CA

Introduction: David A Switzer is a renowned inventor based in Calgary, Canada, known for his innovative contributions to various industries.

Latest Patents: David A Switzer holds several patents in the fields of renewable energy, sustainable technologies, and consumer electronics.

Career Highlights: With a career spanning over two decades, David A Switzer has been instrumental in developing cutting-edge solutions that have revolutionized the way we approach environmental challenges and technological advancements.

Collaborations: Throughout his career, David A Switzer has collaborated with leading research institutions, universities, and companies to bring his inventions to life and make a positive impact on society.

Conclusion: David A Switzer's dedication to innovation and his passion for creating a sustainable future have solidified his reputation as a visionary inventor in Calgary, Canada.