Richard P. Clifford

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South Wirral, GB

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Patents Grantslast 30 patents

Information Patent Grant
Microbiological control agent
- Patent number 5,023,267
- Issue date Jun 11, 1991
- W. R. Grace & Co.-Conn.
- Douglas Clarkson
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Method of controlling pitch using a cationically modified tannin
- Patent number 4,964,952
- Issue date Oct 23, 1990
- W. R. Grace & Co.-Conn.
- John J. Bennison
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Microbiological control process
- Patent number 4,863,616
- Issue date Sep 5, 1989
- W. R. Grace & Co.-Conn.
- Douglas Clarkson
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Biocide
- Patent number 4,853,411
- Issue date Aug 1, 1989
- W. R. Grace & Co.-Conn.
- Douglas Clarkson
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Biocide
- Patent number 4,539,071
- Issue date Sep 3, 1985
- Dearborn Chemicals Limited
- Richard P. Clifford
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE