Granted Patent
Utility
US 5,534,551 · App. 08/318,754
Aminoguanidine spray drying process
Inventors:
Phillip E. Page, Jonathan Berman, Janet M. Pence, Sharon K. Minish
Patented Case
View Patent ↗
Granted: Jul 9, 1996
Filed: Dec 22, 1994
Inventors
Phillip E. Page
Jonathan Berman
Janet M. Pence
Sharon K. Minish
Assignee (at issue)
Hoechst Marion Roussel
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.