Granted Patent
Utility
US 5,561,108 · App. 08/282,860
Preparation of .alpha..sub.1 -antichymotrypsin
Inventors:
Grace C. Tsay, Neal Cheung, Jeffrey Bettencourt
Patented Case
View Patent ↗
Granted: Oct 1, 1996
Filed: Jul 29, 1994
Inventors
Grace C. Tsay
Neal Cheung
Jeffrey Bettencourt
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.