Issued Patents All Time
Showing 1–25 of 46 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8012664 | Light-sensitive component for use in photoresists | Ralf Grottenmüller, Dieter Wagner | 2011-09-06 |
| 6720992 | Method for improving the contrast reproduction of digitized images | Werner von Stein | 2004-04-13 |
| 6529243 | Method for electronic reduction of the contrast of video images as early as during recording | Werner von Stein | 2003-03-04 |
| 6200791 | Method of purifying thrombin-like protease enzymes obtained from snake venom | Margarete Schwarz | 2001-03-13 |
| 6169599 | Method for determining the amount of light in each primary color when copying a colored original | Manfred Fuersich, Helmut Treiber | 2001-01-02 |
| 6146817 | Method of and apparatus for masking a master for reproduction | Friedrich Jacob, Gunter Findeis | 2000-11-14 |
| 6146626 | Defined enzyme mixtures for obtaining cells and treating wounds | Claus Otto Markert, Hans Thom, Jurgen Weymann | 2000-11-14 |
| 6099644 | Process and apparatus for recoating a deactivated catalyst coating in a catalyst | Gunter Loose, Axel Hirshmann | 2000-08-08 |
| 5877107 | Method for producing a catalytic converter | Wolfgang Maus | 1999-03-02 |
| 5863711 | Process for the production of images on paper | Werner Ritter Von Stein | 1999-01-26 |
| 5821187 | Process and apparatus for recoating a deactivated catalyst coating in a catalyst | Gunter Loose, Axel Hirshmann | 1998-10-13 |
| 5798821 | Copying of film under different conditions | Werner von Stein | 1998-08-25 |
| 5781276 | Printing of color film | Manfred Fuersich, Klaus Hartmann | 1998-07-14 |
| 5743087 | Method and apparatus for purifying exhaust gases from internal combustion engines | Gunter Loose, Axel Hirschmann | 1998-04-28 |
| 5726398 | Automotive bumper and muffler combination | Jon W. Harwood | 1998-03-10 |
| 5638153 | Masking of transparencies for copying | Friedrich Jacob, Eberhard Schulz | 1997-06-10 |
| 5613359 | Method and apparatus for reducing hydrocarbon emissions for an internal combustion engine | Gunter Loose, Erwin Strohmer | 1997-03-25 |
| 5563018 | (1,2-naphthoquinone 2-diazide) sulfonic acid esters, radiation-sensitive mixture prepared therewith and radiation-sensitive recording material | Gerhard Buhr, Fritz Erdmann, Siegfried Scheler | 1996-10-08 |
| 5556604 | Method and apparatus for purifying exhaust gases from internal combustion engines | Gunter Loose, Axel Hirschmann | 1996-09-17 |
| 5467165 | Masking of photographs for reproduction | Friedrich Jacob | 1995-11-14 |
| 5461458 | Method of automatically controlling exposure when making prints from film from portrait-photography studios | Manfred Fuersich | 1995-10-24 |
| 5413899 | Light-sensitive mixture containing an 0-naphthoquinonediazide-sulfonic acid ester and recording material produced therewith wherein the 0-naphthoquinone diazides are partial esters | Siegfried Scheler, Andreas Elsaesser, Gerhard Buhr, Klaus Bergmann | 1995-05-09 |
| 5358823 | Radiation-sensitive composition containing esterification product of (1,2-naphthoquinone-2-diazide)-sulfonic acid with 2,3,4,4'-tetrahydroxybenzophenone and a di- or tri-hydroxybenzophenone | Hans-Joachim Merrem, Fritz Erdmann, Axel Schmitt | 1994-10-25 |
| 5306595 | Composition containing naphthoquinone diazide sulfonic acid mixed esters and radiation-sensitive recording material prepared therewith | Siegfried Scheler, Axel Schmitt, Gerhard Buhr | 1994-04-26 |
| 5300133 | Soot particle exhaust-gas filter | Hans-Dieter Schuster, Hans-Joachim Langer, Bernhard Jokl | 1994-04-05 |