Keith R. Underwood

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Annapolis, MD, US

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Patents Grantslast 30 patents

Information Patent Grant
Sand seepage stream and wetland restoration system and method for e...
- Patent number 11,047,124
- Issue date Jun 29, 2021
- Keith R. Underwood
- E03 - WATER SUPPLY SEWERAGE

Patents Applicationslast 30 patents

Information Patent Application
Regenerative stormwater conveyance system and method
- Publication number 20220056684
- Publication date Feb 24, 2022
- Keith R. Underwood
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Application
Sand Seepage Stream and Wetland Restoration System and Method for E...
- Publication number 20220025632
- Publication date Jan 27, 2022
- Keith R. Underwood
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Application
IRRIGATION CURTAIN AND EROSION CONTROL METHOD FOR REGENERATIVE STOR...
- Publication number 20190032321
- Publication date Jan 31, 2019
- Keith Underwood
- E03 - WATER SUPPLY SEWERAGE
Information Patent Application
Sand seepage stream and wetland restoration system and method for e...
- Publication number 20070160424
- Publication date Jul 12, 2007
- Keith R. Underwood
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING