Erika Spriewald

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Leverkusen, DE

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Patents Grantslast 30 patents

Information Patent Grant
Bleach-fixing bath for color photographic material
- Patent number 5,976,772
- Issue date Nov 2, 1999
- AGFA-Gevaert AG
- Thomas Hubsch
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Photographic processing method
- Patent number 4,987,058
- Issue date Jan 22, 1991
- Agfa-Gevaert Aktiengesellschaft
- Erika Spriewald
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
No-rinse photographic processing method and the stabilizing bath us...
- Patent number 4,855,216
- Issue date Aug 8, 1989
- Agfa-Gevaert Aktiengesellschaft
- Heinz Meckl
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Receiver for purifying liquids
- Patent number 4,664,799
- Issue date May 12, 1987
- Agfa-Gevaert Aktiengesellschaft
- Erika Spriewald
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL