Granted Patent
Utility
US 5,658,583 · App. 08/508,463
Apparatus and methods for improved noninvasive dermal administration of pharmaceuticals
Inventors:
Jie Zhang, Hao Zhang
Patented Case
View Patent ↗
Granted: Aug 19, 1997
Filed: Jul 28, 1995
Inventors
Jie Zhang
Hao Zhang
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.