Roy E. Smith

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Mill Hall, PA, US

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Patents Grantslast 30 patents

Information Patent Grant
Method of lowering the color of effluent which contains aryl azo- o...
- Patent number 4,194,973
- Issue date Mar 25, 1980
- American Color & Chemical Corporation
- Roy E. Smith
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Process for preparing p-[[p-(phenylazo)phenyl]azo]phenol
- Patent number 4,141,892
- Issue date Feb 27, 1979
- American Color & Chemical Corporation
- Edgar E. Renfrew
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...