Granted Patent
Utility
US 4,997,652 · App. 07/359,132
Biodegradable ocular implants
Inventor:
Vernon G. Wong
Patented Case
View Patent ↗
Granted: Mar 5, 1991
Filed: May 31, 1989
Inventor
Vernon G. Wong
Assignee (at issue)
VISIONEX HOLDINGS, LLC
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.