Granted Patent
Utility
US 5,674,726 · App. 08/338,269
Enzyme stabilization with poly-L-lysine
Inventors:
Toru Shinto, Jun Hiraki
Patented Case
View Patent ↗
Granted: Oct 7, 1997
Filed: Nov 14, 1994
Inventors
Toru Shinto
Jun Hiraki
Assignee (at issue)
Chisso Corporation
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.