Chris Ryan Demarest

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Livermore, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Stormwater management system with internal bypass
- Patent number 11,479,487
- Issue date Oct 25, 2022
- OLDCASTLE INFRASTRUCTURE, INC.
- James Ferguson Holtz
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Stormwater filtration system with internal bypass pipe
- Patent number 11,420,880
- Issue date Aug 23, 2022
- OLDCASTLE INFRASTRUCTURE, INC.
- James Ferguson Holtz
- E03 - WATER SUPPLY SEWERAGE
Information Patent Grant
Tree box filter with hydromodification panels
- Patent number 10,696,573
- Issue date Jun 30, 2020
- OLDCASTLE INFRASTRUCTURE, INC.
- James Ferguson Holtz
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Tree box filter with hydromodification panels
- Patent number 10,118,846
- Issue date Nov 6, 2018
- Oldcastle Precast, Inc.
- James Ferguson Holtz
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

Patents Applicationslast 30 patents

Information Patent Application
Stormwater Filtration System with Internal Bypass Pipe
- Publication number 20210070631
- Publication date Mar 11, 2021
- Oldcastle Infrastructure, Inc.
- James Ferguson Holtz
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Application
Stormwater Management System with Internal Bypass
- Publication number 20210024389
- Publication date Jan 28, 2021
- Oldcastle Infrastructure, Inc.
- James Ferguson Holtz
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Application
Tree Box Filter with Hydromodification Panels
- Publication number 20190039927
- Publication date Feb 7, 2019
- Oldcastle Precast, Inc.
- James Ferguson Holtz
- E03 - WATER SUPPLY SEWERAGE
Information Patent Application
Tree Box Filter with Hydromodification Panels
- Publication number 20160176732
- Publication date Jun 23, 2016
- Oldcastle Precast, Inc.
- James Ferguson Holtz
- E03 - WATER SUPPLY SEWERAGE