David L. Siegfried

Person

Langhorne, PA, US

People

Patents Grantslast 30 patents

Information Patent Grant
Process for obtaining a color image with improved resolution
- Patent number 6,143,461
- Issue date Nov 7, 2000
- Agfa Corporation
- Shane Hsieh
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Single coating transfer color proofing system
- Patent number 5,840,464
- Issue date Nov 24, 1998
- John J. Gigantino
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Negative working, peel developable, single sheet color proofing system
- Patent number 5,792,588
- Issue date Aug 11, 1998
- Bayer Corporation
- Wojciech A. Wilczak
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Negative working, peel developable, single sheet color proofing sys...
- Patent number 5,738,970
- Issue date Apr 14, 1998
- Bayer Corporation
- Shane Hsieh
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Method of producing an image using a negative working, peel develop...
- Patent number 5,545,506
- Issue date Aug 13, 1996
- Hoechst Celanese Corporation
- Wojciech A. Wilczak
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Process for the production of a color test image using quinone diaz...
- Patent number 5,436,106
- Issue date Jul 25, 1995
- Hoechst Aktiengesellschaft
- Dieter Mohr
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Colored positive-working quinone diazide photosensitive recording m...
- Patent number 5,348,833
- Issue date Sep 20, 1994
- Hoechst Aktiengesellschaft
- Dieter Mohr
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

David L. Siegfried

Person

Patents Grantslast 30 patents

Process for obtaining a color image with improved resolution

Single coating transfer color proofing system

Negative working, peel developable, single sheet color proofing system

Negative working, peel developable, single sheet color proofing sys...

Method of producing an image using a negative working, peel develop...

Process for the production of a color test image using quinone diaz...

Colored positive-working quinone diazide photosensitive recording m...