Granted Patent
Utility
US 5,859,003 · App. 08/691,415
Salts of azelastine having improved solubility
Inventors:
Helmut Hettche, Reinhard Muckenschnabel, Gerhard Scheffler, Ilona Fleischhauer, Wolfgang Morick
Patented Case
View Patent ↗
Granted: Jan 12, 1999
Filed: Aug 2, 1996
Inventors
Helmut Hettche
Reinhard Muckenschnabel
Gerhard Scheffler
Ilona Fleischhauer
Wolfgang Morick
Assignee (at issue)
ASTA Pharma Aktiengesellschaft
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.