John M. Stewart

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Salt Lake City, UT, US

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Patents Grantslast 30 patents

Information Patent Grant
Sequential separation of metals by controlled pH precipitation
- Patent number 5,128,047
- Issue date Jul 7, 1992
- Rhone-Poulenc Inc.
- John M. Stewart
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Phosphate recovery from wet phosphoric acid purification process
- Patent number 4,684,512
- Issue date Aug 4, 1987
- Stauffer Chemical Company
- John M. Stewart
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Co-current absorber for recovering inorganic compounds from plant e...
- Patent number 4,152,405
- Issue date May 1, 1979
- Stauffer Chemical Company
- Alfred W. Petersen
- C01 - INORGANIC CHEMISTRY