Granted Patent
Utility
US 5,217,891 · App. 07/507,398
DNA constructs containing a kluyveromyces .alpha. factor leader sequence for directing secretion of heterologous polypeptides
Inventors:
Anthony J. Brake, Johan A. Van Den Berg
Patented Case
View Patent ↗
Granted: Jun 8, 1993
Filed: Apr 9, 1990
Inventors
Anthony J. Brake
Johan A. Van Den Berg
Assignees (at issue)
Chiron Corporation
Gist-Brocades
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.