Granted Patent
Utility
US 6,326,458 · App. 08/133,445
Continuous process for the manufacture of lactide and lactide polymers
Inventors:
Patrick R. Gruber, Eric Stanley Hall, Jeffrey John Kolstad, Matthew L. Iwen, Richard Douglas Benson, Ronald L. Borchardt
Patented Case
View Patent ↗
Granted: Dec 4, 2001
Filed: Oct 7, 1993
Inventors
Patrick R. Gruber
Eric Stanley Hall
Jeffrey John Kolstad
Matthew L. Iwen
Richard Douglas Benson
Ronald L. Borchardt
Assignee (at issue)
Cargill, Incorporated
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.