Inventor

Carl-Heinrich Weischer

Inventor
Bonn, DE

Overview

8→
Patents
1987–2001
Patent span
Human necessities
Primary field (CPC A)

Patents· 8 as inventor

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

A61Kprimary
A61KPreparations for medical, dental or toiletry purposes43%
A61PSpecific therapeutic activity of chemical compounds or medicinal preparations43%
C07DHeterocyclic compounds14%

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1987–1988Patents assigned to DEGUSSA (2)· patent assignee history
1987–2001Based in Bonn, DE· patent location history
1988Patents assigned to BREUEL HANS PETER (1)· patent assignee history
1988Patents assigned to HETTCHE HELMUT (1)· patent assignee history
1989–2001Patents assigned to ASTA PHARMA AG (4)· patent assignee history
1996Patents assigned to ASTA MEDICA AG (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
ASTA PHARMA AG41989–2001
DEGUSSA21987–1988
ASTA MEDICA AG11996
BREUEL HANS PETER11988
HETTCHE HELMUT11988
Locations
LocationPatentsSpan
Bonn, DE81987–2001