Granted Patent
Utility
US 4,861,591 · App. 07/309,019
Formulations for hygroscopic pharmaceuticals
Inventors:
Richard P. Weierstall, Robin Enever, Kathleen L. Brunelle, Gerard F. Thone, Ronald N. Warner
Patented Case
View Patent ↗
Granted: Aug 29, 1989
Filed: Feb 7, 1989
Inventors
Richard P. Weierstall
Robin Enever
Kathleen L. Brunelle
Gerard F. Thone
Ronald N. Warner
Assignee (at issue)
Amerimas Home Products, Inc.
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.