Granted Patent
Utility
US 5,977,088 · App. 08/467,995
Formulations containing hyaluronic acid
Inventors:
David William Harper, Ehud Shmuel Klein, Rudolf Edger Falk, Samuel Simon Asculai, David Hochman, Don Purschke
Patented Case
View Patent ↗
Granted: Nov 2, 1999
Filed: Jun 6, 1995
Inventors
David William Harper
Ehud Shmuel Klein
Rudolf Edger Falk
Samuel Simon Asculai
David Hochman
Don Purschke
Assignee (at issue)
Hyal Pharmaceutical 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.