Richard J. Kempf

Follow

Person

Towanda, PA, US

People

Patents Grantslast 30 patents

Information Patent Grant
Process for using photoimageable films prepared for aqueous photoim...
- Patent number 5,741,621
- Issue date Apr 21, 1998
- E. I. Du Pont de Nemours and Company
- Richard Joseph Kempf
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Positive-working photosensitive electrostatic master with improved...
- Patent number 5,145,760
- Issue date Sep 8, 1992
- E. I. Du Pont de Nemours and Company
- Graciela B. Blanchet-Fincher
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Photosensitive leuco dye containing electrostatic master with print...
- Patent number 4,945,020
- Issue date Jul 31, 1990
- E. I. Du Pont de Nemours and Company
- Richard J. Kempf
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Process for preparing positive and negative images using photoharde...
- Patent number 4,859,551
- Issue date Aug 22, 1989
- E. I. Du Pont de Nemours and Company
- Richard J. Kempf
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Solvent developable photoresist composition and process of use
- Patent number 4,716,093
- Issue date Dec 29, 1987
- E. I. Du Pont de Nemours and Company
- Richard J. Kempf
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY