% Expired Patents = 66.7

Forward Citations = 132

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2 inventors (with patents filed for the assignee):

Joe D Hedges (6 out of 8 patents)

Paul J Voelker (3 out of 7 patents)

6 patents: Sort by Forward Citations

1. 9702862 - Detection of fuel contamination in lubricating oil (2017-07-11),

2. 8643388 - Detection of fuel contamination in lubricating oil (2014-02-04),

3. 8614588 - Active filtering of oil (2013-12-24),

4. 7521945 - Oil monitoring system (2009-04-21),

5. 5789665 - Oil quality sensor for use in a motor (1998-08-04),

6. 5777210 - Oil quality sensor measuring bead volume (1998-07-07),

Company Overview

Voelker Sensors, Inc. is a leading manufacturer of high-quality sensors for industrial applications. With over 20 years of experience, we provide reliable and accurate sensing solutions for a wide range of industries including automotive, aerospace, and manufacturing. Our sensors are known for their durability, precision, and performance, making them the top choice for engineers and technicians worldwide.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

6 Patents

#267 in Palo Alto, CA

#10,578 in California

#45,007 in US

Palo Alto, CA, United States of America

Voelker Sensors, Inc.

Forward Citations = 132

2 inventors:

Joe D Hedges (6 out of 8 patents)

Paul J Voelker (3 out of 7 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Voelker Sensors, Inc.. Retrieved from https://idiyas.com/company/voelker-sensors

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]