Richard J. Pratt

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Thornton, NH, US

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Patents Grantslast 30 patents

Information Patent Grant
Treatment of clays with cationic polymers to prepare high bulking p...
- Patent number 4,738,726
- Issue date Apr 19, 1988
- Engelhard Corporation
- Richard J. Pratt
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE