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Inventor

Elmar Josef Friederichs

Inventor
Stolberg, DE

Overview

1→
Patents
1998
Patent span
Human necessities
Primary field (CPC A)

Patents· 1 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

A61Pprimary
A61PSpecific therapeutic activity of chemical compounds or medicinal preparations50%
C07CAcyclic or carbocyclic compounds50%
PatentTitleYear
5,728,885'Method of preparing the enantiomers of O-dimethyltramadol'1998

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1998Patents assigned to GRUENENTHAL GMBH (1)· patent assignee history
1998Based in Stolberg, DE· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
GRUENENTHAL GMBH11998
Locations
LocationPatentsSpan
Stolberg, DE11998