Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8268015 | Method for decolorizing keratin-containing fibers | Wibke Gross, Laura Stephan | 2012-09-18 |
| 7799096 | Agent for dyeing keratin-containing fibers | Wibke Gross, Ralph Nemitz | 2010-09-21 |
| 7678156 | Compositions for treating keratinic fibers, methods of treating such fibers therewith and compounds contained therein | Wibke Gross, Sandra Mausberg, Horst Hoffkes | 2010-03-16 |
| 7473280 | Coloring agent compositions and methods of treating keratin fibers therewith | Wibke Gross, Sandra Mausberg, Horst Hoffkes | 2009-01-06 |
| 7393367 | Agent for dyeing keratin-based fibers | Wibke Gross, Horst Hoffkes, Helmut Muller, Carsten Brake | 2008-07-01 |
| 7300472 | Agents for coloring fibers containing keratin | Wibke Gross, Horst Hoffkes, Sandra Mausberg | 2007-11-27 |
| 7105032 | Agents used for dyeing keratinous fibers | Wibke Gross, Sandra Mausberg, Horst Hoeffkes | 2006-09-12 |
| 6790239 | Agent for coloring keratin containing fibers | Hinrich Moeller, Horst Hoeffkes | 2004-09-14 |
| 6770102 | Agent for dying keratin fibers | Hinrich Moeller, Horst Hoeffkes | 2004-08-03 |
| 6755872 | Dyeing agent for keratinous fibers | Hinrich Moeller, Horst Hoeffkes | 2004-06-29 |
| 6743263 | Method for coloring keratin fibers | Horst Hoeffkes, David Rose, Melanie Hitz | 2004-06-01 |
| 6146619 | Process and agents for permanently shaping keratin fibres | Hans-Wolfgang Cortekar | 2000-11-14 |
| 5500475 | Polyurethane-based thickeners | Ulrich Eicken, Herbert Fischer, Wolfgang Gress, Rainer Hoefer, Ludwig Schieferstein | 1996-03-19 |
| 5397844 | Polyacrylates and their use as levelling agents for powder coatings | Herbert Fischer, Wolfgang Gress | 1995-03-14 |
| 5286346 | Deinking of wastepaper with quaternized hydroxyethyl cellulose | Konrad Engelskirchen, Herbert Fischer, Klaus Hornfeck, Ludwig Schieferstein | 1994-02-15 |
| 5238533 | Flotation process for removing fillers from wastepaper in the presence of polymers and copolymers | Konrad Engelskirchen, Herbert Fischer, Klaus Hornfeck, Ludwig Schieferstein | 1993-08-24 |
| 5047259 | Acrylic copolymer flow control agents | Wolfgang Gress, Bernd Wegemund | 1991-09-10 |
| 5006621 | Co-polymers of long chain alkyl acrylates with N-containing olefins and their use as flow improvers for crude oils | Bernd Wahle, Claus-Peter Herold, Wolfgang Zoellner, Ludwig Schieferstein | 1991-04-09 |
| 4859721 | Adducts of carboxylic acids and isocyanates with epoxides, aqueous dispersions containing these adducts, processes for their preparation and their use in the autophoretic coating of metallic surfaces | Roland Morlock, Karl-Heinz Stritzke, Ludwig Schieferstein | 1989-08-22 |