Granted Patent
Utility
US 4,331,766 · App. 06/169,842
Collagen solution, process for its manufacture and its use
Inventors:
Udo Becker, Konrad Braun, Norbert Heimburger
Patented Case
View Patent ↗
Granted: May 25, 1982
Filed: Jul 17, 1980
Inventors
Udo Becker
Konrad Braun
Norbert Heimburger
Assignee (at issue)
Behringwerke 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.