Inventor
Friedbert Zetzsche
Inventor
Duesseldorf, DE
Overview
Patents· 4 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C11Dprimary
C11DDetergent compositions60%
B01DSeparation20%
C23GCleaning or de-greasing of metallic material by chemical methods other than electrolysis20%
PatentTitleYear
5,935,920'Cleaner with high wetting power'19995,286,402'Demulsifying powder-form or liquid cleaning preparations and their use'19944,784,798'Demulsifying cleaning preparation having a prolonged surface-wetting effect'19884,539,117'Method for improving the separating action in the ultrafiltration of aqueous solutions'1985Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1985–1999Patents assigned to HENKEL KGAA (4)· patent assignee history
1985Based in Dusseldorf, DE· patent location history
1988–1999Based in Duesseldorf, DE· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| HENKEL KGAA | 4 | 1985–1999 |
Locations
| Location | Patents | Span |
|---|---|---|
| Duesseldorf, DE | 3 | 1988–1999 |
| Dusseldorf, DE | 1 | 1985 |