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For the Inventor, By the Inventor

Renton, WA, United States of America

Digital Control, Inc.


USPTO Granted Patents = 46


Trademarks = 29

Forward Citations = 1,660

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8 inventors (with patents filed for the assignee):

goldMedal John E Mercer (44 out of 273 patents)

silverMedal Rudolf Zeller (15 out of 80 patents)

bronzeMedal Shiu Sang Ng (11 out of 31 patents)

4.  Guenter W Brune (10 out of 109 patents)

5.  Peter H Hambling (9 out of 20 patents)

6.  Lloyd Alfred Moore (8 out of 28 patents)

7.  Albert W Chau (5 out of 175 patents)

8.  Donald R Parker (1 out of 1 patent)

9.  Rene Betourne (1 patent)


Core Competencies:
Orientation Sensor
Underground Boring
Positional Tracking
Magnetic Locating Signal
Boring Tool Control
Path Mapping
Field Detector Positioning
Auto-Retracting Conductors
Thermal Protection
Utility Installation Monitoring
Boring Technique
Composite Magnetic Signal

46 patents:

1. 6618951 - Orientation sensor utilizing intra-pattern property measurements (2003-09-16),
2. 6617854 - Tracking the positional relationship between a boring tool and one or more buried lines using a composite magnetic signal (2003-09-09),
3. 6559646 - Boring tool locating using sensing at spaced apart reference path locations (2003-05-06),
4. 6536538 - Establishing positions of locating field detectors and path mapping in underground boring tool applications (2003-03-25),
5. 6530155 - Orientation sensor utilizing intra-pattern property measurements (2003-03-11),
6. 6525538 - Position and orientation locator/monitor (2003-02-25),
7. 6496008 - Flux plane locating in an underground drilling system (2002-12-17),
8. 6457537 - Mapping tool for tracking and/or guiding an underground boring tool (2002-10-01),
9. 6454023 - Mapping tool for tracking and/or guiding an underground boring tool (2002-09-24),
10. 6446728 - Auto-extending/retracting electrically isolated conductors in a segmented drill string (2002-09-10),
11. 6417666 - Boring tool tracking system and method using magnetic locating signal and wire-in-pipe data (2002-07-09),
12. 6400159 - Orientation sensor especially suitable for use in an underground boring device (2002-06-04),
13. 6396275 - Arrangement using measured pitch and locating field measurements to determine a positional relationship (2002-05-28),
14. 6364035 - Establishing positions of locating field detectors and path mapping in underground boring tool applications (2002-04-02),
15. 6351892 - Orientation sensor utilizing intra-pattern property measurements (2002-03-05),
Digital Control, Inc. is a leading technology company specializing in providing advanced control systems for industrial automation. With over 20 years of industry experience, we offer innovative solutions to optimize manufacturing processes and improve productivity. Our cutting-edge technologies enable accurate monitoring and precise control of various industrial processes, including temperature, pressure, flow, and level. We cater to a wide range of industries such as pharmaceuticals, food and beverage, oil and gas, automotive, and more. Our mission is to deliver reliable and efficient control systems that empower businesses to achieve their operational goals. Visit our website to learn more about our products and services.
This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Dec 23 2025

46 Patents

#6 in Renton, WA

#157 in Washington

#7,326 in US

#14,671 in the World

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Renton, WA, United States of America

Digital Control, Inc.

Forward Citations = 1,660

8 inventors:

goldMedal John E Mercer (44 out of 273 patents)

silverMedal Rudolf Zeller (15 out of 80 patents)

bronzeMedal Shiu Sang Ng (11 out of 31 patents)

4.  Guenter W Brune (10 out of 109 patents)

5.  Peter H Hambling (9 out of 20 patents)

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