Sensorlink Corporation

Calculating rank

USPTO Granted Patents = 5

% Expired Patents = 20.0

CIPO Patents = 1

Forward Citations = 95

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6 inventors (with patents filed for the assignee):

Kelly R Hefelfinger (2 out of 2 patents)

Nathanial Roth (2 out of 2 patents)

Zhijiang Guo (2 out of 2 patents)

4. Robert Pendergrass (2 out of 6 patents)

5. Scott Bretvick (1 out of 1 patent)

6. Gerald L Edwards (1 out of 7 patents)

7. Kelly R Hefelfinger (0 patent)

5 patents: Sort by Forward Citations

1. 11333684 - Clamp sensor systems and methods (2022-05-17),

2. 10570937 - Clamp sensor systems and methods (2020-02-25),

3. 9500684 - Line-mounted electrical energy measurement device with integrated voltage pickup and clamp (2016-11-22),

4. 8233301 - Impedance dropping dc power supply having an impedance controlled converter (2012-07-31),

5. 5057769 - AC current sensor (1991-10-15),

Company Overview

Sensorlink Corporation is a leading provider of sensor solutions for various industries. With a focus on innovation and quality, we specialize in developing cutting-edge sensor technologies to improve efficiency, safety, and performance for our customers. Our team of experts is dedicated to delivering reliable and accurate sensor solutions that meet the unique needs of each client.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 27 2026

5 Patents

#10 in Ferndale, WA

#1,242 in Washington

#51,669 in US

Ferndale, WA, United States of America

Sensorlink Corporation

Forward Citations = 95

6 inventors:

Kelly R Hefelfinger (2 out of 2 patents)

Nathanial Roth (2 out of 2 patents)

Zhijiang Guo (2 out of 2 patents)

4. Robert Pendergrass (2 out of 6 patents)

5. Scott Bretvick (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Sensorlink Corporation. Retrieved from https://idiyas.com/company/sensorlink

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]

1 patent (CIPO):

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]