Inventor
Stefan Bergfried
Inventor
Essen, DE
Overview
Patents· 4 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
A61Kprimary
A61KPreparations for medical, dental or toiletry purposes23%
A61QSpecific use of cosmetics or similar toiletry preparations23%
A61PSpecific therapeutic activity of chemical compounds or medicinal preparations15%
C07CAcyclic or carbocyclic compounds15%
A01NPreservation of bodies of humans or animals or plants or parts thereof8%
C07FAcyclic, carbocyclic or heterocyclic compounds containing elements other than carbon, hydrogen, halogen, oxygen, nitrogen, sulfur, selenium or tellurium8%
C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds8%
PatentTitleYear
8,653,289'Partial esters of a polyglycerol with at least one carboxylic acid and one polyfunctional carboxylic acid, their preparation and use'20148,420,137'Bioactive composition for cosmetic applications'20137,847,123'Antimicrobial compositions'20105,654,457'Method for synthesizing alkyl tin fluorides'1997Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1997–2014Based in Essen, DE· patent location history
2010–2014Patents assigned to EVONIK GOLDSCHMIDT GMBH (3)· patent assignee history
2013–2014Patents assigned to BERGFRIED STEFAN (2)· patent assignee history
2013–2014Patents assigned to WENK HANS HENNING (2)· patent assignee history
2013Patents assigned to FARWICK MIKE (1)· patent assignee history
2014Patents assigned to FOETSCH HANNELORE (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| EVONIK GOLDSCHMIDT GMBH | 3 | 2010–2014 |
| BERGFRIED STEFANself | 2 | 2013–2014 |
| WENK HANS HENNING | 2 | 2013–2014 |
| FARWICK MIKE | 1 | 2013 |
| FOETSCH HANNELORE | 1 | 2014 |
Locations
| Location | Patents | Span |
|---|---|---|
| Essen, DE | 4 | 1997–2014 |