Granted Patent
Utility
US 5,973,202 · App. 08/704,064
Preparation of poly-o-hydroxyamides and poly o-mercaptoamides
Inventors:
Recai Sezi, Hellmut Ahne, Eva Rissel, Kurt Geibel
Patented Case
View Patent ↗
Granted: Oct 26, 1999
Filed: Aug 28, 1996
Inventors
Recai Sezi
Hellmut Ahne
Eva Rissel
Kurt Geibel
Assignee (at issue)
Siemens Aktiengesellschaft
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.