Granted Patent
Utility
US 4,734,401 · App. 06/840,307
Process for spray drying amino acid compositions
Inventor:
John J. Blouin
Patented Case
View Patent ↗
Granted: Mar 29, 1988
Filed: Mar 17, 1986
Inventor
John J. Blouin
Assignee (at issue)
W. R. Grace & Co.
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.