Inventor
Stefan Hoepfner
Inventor
Hamburg, DE
Overview
Patents· 8 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
A61Kprimary
A61KPreparations for medical, dental or toiletry purposes50%
A61QSpecific use of cosmetics or similar toiletry preparations50%
PatentTitleYear
10,667,998Odor-reduced bleaching202010,596,097Method for multi-tonal color modification of keratinous fibers202010,265,252Odor-reducing developer for oxidation dyes20199,993,406Agent and method for oxidative hair coloring which are gentle on keratin fibers20187,294,153'Caring oxidation coloring agent in a tube'20077,247,173'Tinting agent in tubes'20077,244,277'Oxidation colorant in a tube'20076,485,528'Agents for treating keratin fibers'2002Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2002Patents assigned to SCHWARZKOPF GMBH HANS (1)· patent assignee history
2002–2020Based in Hamburg, DE· patent location history
2007Patents assigned to HENKEL KGAA (3)· patent assignee history
2018–2020Patents assigned to HENKEL AG & CO KGAA (4)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| HENKEL AG & CO KGAA | 4 | 2018–2020 |
| HENKEL KGAA | 3 | 2007 |
| SCHWARZKOPF GMBH HANS | 1 | 2002 |
Locations
| Location | Patents | Span |
|---|---|---|
| Hamburg, DE | 8 | 2002–2020 |