William M. Copa

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Wausau, WI, US

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Patents Grantslast 30 patents

Information Patent Grant
Two-stage anaerobic/aerobic treatment process
- Patent number 4,919,815
- Issue date Apr 24, 1990
- Zimpro/Passavant Inc.
- William M. Copa
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Two-stage batch wastewater treatment
- Patent number 4,897,196
- Issue date Jan 30, 1990
- Zimpro/Passavant Inc.
- William M. Copa
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Two-stage wastewater treatment
- Patent number 4,810,386
- Issue date Mar 7, 1989
- Zimpro/Passavant Inc.
- William M. Copa
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Process for recovering regenerated adsorbent particles and separati...
- Patent number 4,749,492
- Issue date Jun 7, 1988
- Zimpro/Passavant
- John K. Berrigan
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Method for anaerobic treatment of high strength liquors
- Patent number 4,626,354
- Issue date Dec 2, 1986
- Zimpro Inc.
- Clarence A. Hoffman
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Disinfection and purification of fluids using focused laser radiation
- Patent number 4,265,747
- Issue date May 5, 1981
- Sterling Drug Inc.
- William M. Copa
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE