Christopher F. Johnson

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Bountiful, UT, US

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Patents Grantslast 30 patents

Information Patent Grant
Apparatus, method, and system for measuring relative permeability o...
- Patent number 10,197,490
- Issue date Feb 5, 2019
- DCI CORPORATION
- Christopher F. Johnson
- G01 - MEASURING TESTING
Information Patent Grant
Pressure balanced loading piston for triaxial test cells
- Patent number 4,679,441
- Issue date Jul 14, 1987
- Terra Tek, Inc.
- Christopher F. Johnson
- G01 - MEASURING TESTING

Patents Applicationslast 30 patents

Information Patent Application
APPARATUS, METHOD, AND SYSTEM FOR MEASURING RELATIVE PERMEABILITY O...
- Publication number 20160356694
- Publication date Dec 8, 2016
- DCI Corporation
- Christopher F. Johnson
- G01 - MEASURING TESTING