Granted Patent
Utility
US 5,464,451 · App. 08/197,901
Re-tanning process
Inventors:
Jacques P. Denny, Josep R. Sorolla
Patented Case
View Patent ↗
Granted: Nov 7, 1995
Filed: Feb 17, 1994
Inventors
Jacques P. Denny
Josep R. Sorolla
Assignees (at issue)
Sandoz AG
Muenzing Chemie GmbH
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.