Robert B. Fletcher

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St. Paul, MN, US

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Patents Grantslast 30 patents

Information Patent Grant
System for purifying saturated fluoroperhalocarbon liquids
- Patent number 5,507,941
- Issue date Apr 16, 1996
- Minnesota Mining and Manufacturing Company
- Venkateswarlu Pothapragada
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Continuous process for purifying perfluorochemical compositions
- Patent number 5,352,785
- Issue date Oct 4, 1994
- Minnesota Mining and Manufacturing Company
- Thomas C. Herzberg
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Method of purifying saturated fluoroperhalocarbon liquids
- Patent number 5,300,714
- Issue date Apr 5, 1994
- Minnesota Mining and Manufacturing Company
- Venkateswarlu Pothapragada
- C07 - ORGANIC CHEMISTRY