John W. Long

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Freehold, NJ, US

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Patents Grantslast 30 patents

Information Patent Grant
Dry toner with improved toning uniformity
- Patent number 4,304,843
- Issue date Dec 8, 1981
- E. I. Du Pont de Nemours and Company
- Charles W. Manger
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Dry toner process with improved toning uniformity for color develop...
- Patent number 4,215,193
- Issue date Jul 29, 1980
- E. I. Du Pont de Nemours and Company
- Charles W. Manger
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Color design method
- Patent number 4,046,476
- Issue date Sep 6, 1977
- E. I. Du Pont de Nemours and Company
- John Barrie Charamella
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY