Inventor
Hendrik Leendert Rieffe
Inventor
Gouda, NL
Overview
Patents· 4 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C10Mprimary
C10MLubricating compositions50%
C10NIndexing scheme associated with subclass c10m relating to lubricating compositions50%
Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1997–1998Patents assigned to UNICHEMA CHEMIE BV (2)· patent assignee history
1997–2002Based in Gouda, NL· patent location history
1999–2002Patents assigned to UNILEVER PATENT HOLDINGS (2)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| UNICHEMA CHEMIE BV | 2 | 1997–1998 |
| UNILEVER PATENT HOLDINGS | 2 | 1999–2002 |
Locations
| Location | Patents | Span |
|---|---|---|
| Gouda, NL | 4 | 1997–2002 |