John W. Summerfield

Follow

Person

Rosemount, MN, US

People

Patents Grantslast 30 patents

Information Patent Grant
Removal of contaminants from materials
- Patent number 6,312,528
- Issue date Nov 6, 2001
- CRI Recycling Service, Inc.
- John W. Summerfield
- B08 - CLEANING
Information Patent Grant
Battery containing bis(perfluoroalkylsulfonyl)imide and cyclic perf...
- Patent number 5,691,081
- Issue date Nov 25, 1997
- Minnesota Mining and Manufacturing Company
- Larry J. Krause
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
Removal of contaminants from materials
- Publication number 20020023662
- Publication date Feb 28, 2002
- CRI Recycling Service, Inc.
- John W. Summerfield
- C11 - ANIMAL AND VEGETABLE OILS, FATS, FATTY SUBSTANCES AND WAXES FATTY ACIDS...