Granted Patent
Utility
US 4,965,369 · App. 07/489,895
Method for preparing indole carboxylic acid derivatives
Inventors:
Uwe Maetzel, Walter Heitmann
Patented Case
View Patent ↗
Granted: Oct 23, 1990
Filed: Mar 7, 1990
Inventors
Uwe Maetzel
Walter Heitmann
Assignee (at issue)
Kali-Chemie Pharma GmbH
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.