% Expired Patents = 20.0

Forward Citations = 14

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3 inventors (with patents filed for the assignee):

David M Penny (5 out of 7 patents)

Kenneth F Knapp (4 out of 5 patents)

Gerald S Harvey (4 out of 5 patents)

5 patents: Sort by Forward Citations

1. 6865869 - Airboat with aquatic vegetation shredding assembly (2005-03-15),

2. 6449931 - Aquatic vegetation shredder having bow and stern mounted high speed, large chopping propellers (2002-09-17),

3. 6189303 - Method of destroying aquatic vegetation (2001-02-20),

4. 6116004 - Aquatic vegetation shredder (2000-09-12),

5. 6023920 - Apparatus for destroying aquatic vegetation (2000-02-15),

Company Overview

The Master's Dredging Company, Inc. is a leading provider of dredging services in the United States. With over 30 years of experience, we specialize in hydraulic dredging, marine construction, and environmental remediation. Our team of experts is committed to delivering high-quality, cost-effective solutions for our clients' dredging needs.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

5 Patents

#16 in Lawrence, KS

#468 in Kansas

#51,620 in US

Lawrence, KS, United States of America

The Master's Dredging Company, Inc.

Forward Citations = 14

3 inventors:

David M Penny (5 out of 7 patents)

Kenneth F Knapp (4 out of 5 patents)

Gerald S Harvey (4 out of 5 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: The Master's Dredging Company, Inc.. Retrieved from https://idiyas.com/company/master-s-dredging-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]