Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8992633 | Disulfide dyes | Christian Cremer, Beate Fröhling | 2015-03-31 |
| 8697101 | Polysiloxane antimicrobials | Olof Wallquist, Andrea Preuss, Stewart Todd Elder | 2014-04-15 |
| 8641783 | Disulfide or thiol polymeric hair dyes | Christian Cremer, Beate Fröhling | 2014-02-04 |
| 8221508 | Polymeric hair dyes | Christian Cremer, Olof Wallquist, Xian-Zhi Zhou, Barbara Wagner | 2012-07-17 |
| 8206464 | Blue polymeric hair dyes | Christian Cremer, Olof Wallquist, Beate Fröhling | 2012-06-26 |
| 8118882 | Polymeric hair dyes | Christian Cremer, Olof Wallquist | 2012-02-21 |
| 8118883 | Polymeric hair dyes | Christian Cremer, Olof Wallquist, Robert Hochberg | 2012-02-21 |
| 8097045 | Polymeric hair dyes | Christian Cremer, Olof Wallquist, Beate Fröhling | 2012-01-17 |
| 7928049 | Use of metal complex compounds as oxidation catalysts | Barbara Wagner, Hauke Rohwer, Marie-Josee Dubs, Nicole End, Menno Hazenkamp | 2011-04-19 |
| 7731985 | 4-aminopyrimidines and their use for the antimicrobial treatment of surfaces | Werner Hölzl, Wolfgang Haap, Andrea Preuss, Andreas Mehlin | 2010-06-08 |
| 7731761 | Polymeric hair dyes | Olof Wallquist, Christian Cremer, Beate Fröhling, Andreas Möck | 2010-06-08 |
| 7722893 | Use of substitute 2,4-bis (alkylamino) pyrimidines or quinzolines as antimicrobials | Werner Hölzl, Andrea Preuss, Andreas Mehlin | 2010-05-25 |
| 7476753 | 3-aryl-2-cyano-3-hydroxy-acrylic acid derivatives | Dinesh Narendra Rele, Harjinder Singh Bhatti, Werner Hölzl, Errol V. Mathias, Andrea Preuss +1 more | 2009-01-13 |