Granted Patent
Utility
US 4,138,479 · App. 05/832,300
Process for the preparation of immunopotentiating agents from components of yeast cell wall material
Inventors:
Ernst Truscheit, Robert Bierling, Horst D. Schlumberger, Herbert F. Oettgen
Patented Case
View Patent ↗
Granted: Feb 6, 1979
Filed: Sep 12, 1977
Inventors
Ernst Truscheit
Robert Bierling
Horst D. Schlumberger
Herbert F. Oettgen
Assignee (at issue)
Bayer 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.