Inventor
Wolfgang Dietrich
Inventor
Schaffhausen, CH
Overview
Patents· 5 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H01Rprimary
H01RElectrically-conductive connections20%
A61PSpecific therapeutic activity of chemical compounds or medicinal preparations10%
B01DSeparation10%
B29CShaping or joining of plastics10%
C07CAcyclic or carbocyclic compounds10%
D21CProduction of cellulose by removing non-cellulose substances from cellulose-containing materials10%
F16JPistons10%
H02KDynamo-electric machines10%
Y10TTechnical subjects covered by former us classification10%
PatentTitleYear
7,014,684'Method for the treatment of waste gas from a cellulose plant'20066,187,956'Method for preparing of L-phenylephrine hydrochloride'20014,831,302'Apparatus for monitoring the wear upon carbon brushes in electrical machines'19894,602,181'Brush holder assembly for use in electric machines'19864,442,174'Rubber sealing member'1984Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1984Patents assigned to LEESER GUMMI & KUNSTSTOFF (1)· patent assignee history
1984Based in Cologne, DE· patent location history
1986Patents assigned to DIETRICH MICHAEL (1)· patent assignee history
1986Patents assigned to DIETRICH WOLFGANG (1)· patent assignee history
1986–1989Based in Schaffhausen, CH· patent location history
1989Patents assigned to DIETRICH G GMBH (1)· patent assignee history
2001Patents assigned to BOEHRINGER INGELHEIM PHARMA (1)· patent assignee history
2001Based in Bad Duerkheim, DE· patent location history
2006Based in Merseburg, DE· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| BOEHRINGER INGELHEIM PHARMA | 1 | 2001 |
| DIETRICH G GMBH | 1 | 1989 |
| DIETRICH MICHAEL | 1 | 1986 |
| DIETRICH WOLFGANGself | 1 | 1986 |
| LEESER GUMMI & KUNSTSTOFF | 1 | 1984 |
Locations
| Location | Patents | Span |
|---|---|---|
| Schaffhausen, CH | 2 | 1986–1989 |
| Merseburg, DE | 1 | 2006 |
| Bad Duerkheim, DE | 1 | 2001 |
| Cologne, DE | 1 | 1984 |