Inventor

ZAHN WOLFGANG

DE57 patents

⚠️ This page may combine multiple inventors who share the name “ZAHN WOLFGANG”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

ZAHN WOLFGANG

AGFA GEVAERT AG

Method of and an arrangement for calibrating a color copying apparatus

Apparatus for processing developed photographic films prior to copying

Automatic color printing apparatus

Method and apparatus for making reproductions of photograhic copy negatives or the like

Label for use on containers for photographic film or the like

Method and apparatus for evaluating developed photographic films prior to copying

Printing of color film

Apparatus for convoluting webs onto rotary cores

Apparatus for applying markers to webs of photographic material in copying machines

Masking of photographs for reproduction

Copying method and copier for film

Method and arrangement for copying filmstrips

Photographic copier with masking device and copying method

Color printing method and apparatus

Photographic copier

Method of copying color exposures

Photographic copying machine

Evaluation and copying of originals arranged in a strip

Masking of transparencies for copying

Method and apparatus for making color prints

Method and apparatus for evaluating developed photographic films preparatory to reproduction

Splicing apparatus for photographic films or the like

Photographic roller copying apparatus

Photographic roller copier apparatus

Photographic copier

Method and apparatus for photoelectrophoretic-color-process copying

Method and apparatus for evaluating and processing a strip of originals to be copied

Method for determining the amount of light in each primary color when copying a colored original

Method of and apparatus for masking a master for reproduction

Method of automatically controlling exposure when making prints from film from portrait-photography studios

DAIMLER BENZ AG

Method and apparatus for reducing hydrocarbon emissions for an internal combustion engine

Soot particle exhaust-gas filter

Exhaust gas equipment for an internal combustion engine

Method and apparatus for purifying exhaust gases from internal combustion engines

Method and apparatus for purifying exhaust gases from internal combustion engines

Process and apparatus for recoating a deactivated catalyst coating in a catalyst

Process for determining aging condition of exhaust-gas catalyst

HOECHST AG

Positive-working photosensitive mixture and recording material of high thermal stability with phenolic novolak of m-cresol and 2,3,6-trialkylphenol

Light-sensitive mixture containing an 0-naphthoquinonediazide-sulfonic acid ester and recording material produced therewith wherein the 0-naphthoquinone diazides are partial esters

1,2-naphthoquinone-2-diazide-sulfonic acid amides and photosensitive compositions containing these compounds

Bis-1,2-naphthoquinone-2-diazide-sulfonic acid amides, their use in a radiation-sensitive mixture, and radiation-sensitive copying material

(1,2-naphthoquinone 2-diazide) sulfonic acid esters, radiation-sensitive mixture prepared therewith and radiation-sensitive recording material

Composition containing naphthoquinone diazide sulfonic acid mixed esters and radiation-sensitive recording material prepared therewith

KNOLL AG

Defined enzyme mixtures for obtaining cells and treating wounds

Method of purifying thrombin-like protease enzymes obtained from snake venom

(unassigned)

Method for electronic reduction of the contrast of video images as early as during recording

Method for improving the contrast reproduction of digitized images

AP PARTS MFG

Automotive bumper and muffler combination

BASF AG

Preparation of an enzymatically active formulation embedded in silica gel

EMITEC EMISSIONSTECHNOLOGIE

Method for producing a catalytic converter