For the Inventor, By the Inventor

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Portland, OR, United States of America

Sentrol, Inc.

USPTO Granted Patents = 45

Trademarks = 1

Forward Citations = 1,088

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34 inventors (with patents filed for the assignee):

Thomas J Holce (15 out of 20 patents)

Charles M Huckins (15 out of 17 patents)

William E Abel (10 out of 10 patents)

4. Douglas Henry Marman (8 out of 40 patents)

5. Robert Gerard Fischette (5 out of 9 patents)

6. Kirk Rodney Johnson (4 out of 10 patents)

7. Maki Myoga (2 out of 10 patents)

8. Keith E Flint (2 out of 2 patents)

9. Robert C Winters (2 out of 2 patents)

10. Richard A Smith (2 out of 2 patents)

11. Mark A Peltier (2 out of 5 patents)

12. David S Terrett (2 out of 2 patents)

13. Scot R Newport (2 out of 2 patents)

14. David John Sayler (1 out of 58 patents)

15. David A Bruno (1 out of 18 patents)

Core Competencies:

Battery Saving

Smoke Detector

Security System

Glass Break Detector

Magnetic Switch

Alarm Mechanism

Intrusion Detection

Wireless Security

Sensor Technology

Circuit Housing

Fault Indication

Interlock System

45 patents: Sort by Forward Citations

1. 5804891 - Battery saving switching mechanism (1998-09-08),

2. 5777552 - Curtain door alarm (1998-07-07),

3. 5708414 - Sensitivity fault indication technique implemented in smoke detector (1998-01-13),

4. D384875 - Plunger lock mechanism (1997-10-14),

5. 5656982 - Plunger-operated alarm switch assembly (1997-08-12),

6. 5635887 - Compact rare earth magnet security switch assembly (1997-06-03),

7. 5565852 - Smoke detector with digital display (1996-10-15),

8. 5546074 - Smoke detector system with self-diagnostic capabilities and replaceable (1996-08-13),

9. 5539381 - Fixed threshold and rate of rise heat detector with dynamic thermal (1996-07-23),

10. 5534849 - Time multiplexed, false alarm resistant magnetically actuated security (1996-07-09),

11. 5510767 - Glass break detector having reduced susceptibility to false alarms (1996-04-23),

12. D361732 - Smoke detector housing (1995-08-29),

13. D359701 - Smoke detector cover (1995-06-27),

14. 5428345 - Method of and apparatus for operating a security system to produce an (1995-06-27),

15. 5311024 - Lens arrangement for intrusion detection device (1994-05-10),

Company Overview

Sentrol, Inc., based in Portland, Oregon, specializes in advanced security solutions and safety technologies. The company focuses on developing innovative products such as battery-saving mechanisms, smoke detectors, and intrusion detection systems. Their expertise extends to wireless security applications, glass break detectors, and magnetic switch assemblies, ensuring comprehensive protection for residential and commercial environments. Sentrol is committed to enhancing security and safety through reliable and efficient alarm technologies.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

45 Patents

#24 in Portland, OR

#87 in Oregon

#7,787 in US

#15,450 in the World

Portland, OR, United States of America

Sentrol, Inc.

Forward Citations = 1,088

34 inventors:

Thomas J Holce (15 out of 20 patents)

Charles M Huckins (15 out of 17 patents)

William E Abel (10 out of 10 patents)

4. Douglas Henry Marman (8 out of 40 patents)

5. Robert Gerard Fischette (5 out of 9 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Sentrol, Inc.. Retrieved from https://idiyas.com/company/sentrol

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]

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