Forward Citations = 18

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4 inventors (with patents filed for the assignee):

Charles W Johnson (2 out of 2 patents)

Leroy J Meddock (1 out of 3 patents)

Mark T Meddock (1 out of 4 patents)

4. Kenneth E Swanson (1 out of 1 patent)

2 patents: Sort by Forward Citations

1. 5679251 - Wound oil filter (1997-10-21),

2. 5552065 - Oil filtration method and element of wound cotton/paper composition (1996-09-03),

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

2 Patents

#24 in Rancho Santa Fe, CA

#21,017 in California

#94,905 in US

Rancho Santa Fe, CA, United States of America

The Oilguard Company LLC

Forward Citations = 18

4 inventors:

Charles W Johnson (2 out of 2 patents)

Leroy J Meddock (1 out of 3 patents)

Mark T Meddock (1 out of 4 patents)

4. Kenneth E Swanson (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: The Oilguard Company LLC. Retrieved from https://idiyas.com/company/oilguard-company

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]