David C. Ihrig

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Littleton, CO, US

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Patents Grantslast 30 patents

Information Patent Grant
Ozone disinfection in waste water treatment with recycling of ozona...
- Patent number 4,132,637
- Issue date Jan 2, 1979
- FMC Corporation
- William P. Key
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Rotating gas diffuser
- Patent number 3,992,491
- Issue date Nov 16, 1976
- FMC Corporation
- David C. Ihrig
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE