Granted Patent
Utility
US 5,149,398 · App. 07/632,724
Apparatus for producing a fast dissolving granular product
Inventors:
John H. Shaffer, William L. Kurtz, John H. Hubbard
Patented Case
View Patent ↗
Granted: Sep 22, 1992
Filed: Dec 24, 1990
Inventors
John H. Shaffer
William L. Kurtz
John H. Hubbard
Assignee (at issue)
Olin 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.