Granted Patent
Utility
US 5,980,799 · App. 09/098,195
Methods of making controlled porosity expanded polytetrafluoroethylene products and fabrication
Inventors:
Paul Martakos, Theodore Karwoski, Steve A. Herweck
Patented Case
View Patent ↗
Granted: Nov 9, 1999
Filed: Jun 16, 1998
Inventors
Paul Martakos
Theodore Karwoski
Steve A. Herweck
Assignee (at issue)
ATRIUM MEDICAL 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.