Robert C. Johnson

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Wilmington, DE, US

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Patents Grantslast 30 patents

Information Patent Grant
Diffuse reflective article
- Patent number 7,660,040
- Issue date Feb 9, 2010
- E. I. Du Pont de Nemours and Company
- Adam Ben Starry
- G02 - OPTICS
Information Patent Grant
Method and apparatus for quantifying visual showthrough of printed...
- Patent number 7,620,211
- Issue date Nov 17, 2009
- E. I. Du Pont de Nemours and Company
- Richard Walker Browne
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method to determine light scattering efficiency of pigments
- Patent number 6,236,460
- Issue date May 22, 2001
- E. I. Du Pont de Nemours and Company
- Robert William Johnson
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Method to determine light scattering efficiency of pigments
- Patent number 6,040,913
- Issue date Mar 21, 2000
- E. I. Du Pont de Nemours and Company
- Robert William Johnson
- G01 - MEASURING TESTING
Information Patent Grant
Method and apparatus for calorimetric differential thermal analysis
- Patent number 4,350,446
- Issue date Sep 21, 1982
- E. I. Du Pont de Nemours and Company
- Robert C. Johnson
- G01 - MEASURING TESTING

Patents Applicationslast 30 patents

Information Patent Application
Diffuse reflector comprising nonwoven sheet with binder layer compr...
- Publication number 20080080055
- Publication date Apr 3, 2008
- Edwin James Lightfoot
- G02 - OPTICS
Information Patent Application
Diffuse reflective article
- Publication number 20060262310
- Publication date Nov 23, 2006
- Adam Ben Starry
- G02 - OPTICS
Information Patent Application
Method and apparatus for quantifying visual showthrough of printed...
- Publication number 20060181749
- Publication date Aug 17, 2006
- Richard Walker Browne
- H04 - ELECTRIC COMMUNICATION TECHNIQUE