IP Library Granted Patent US 5,019,393
Granted Patent Utility
US 5,019,393 · App. 07/227,728

Biocompatible substance with thromboresistance

Inventors: Ralph K. Ito, Frank W. LoGerfo
Patented Case View Patent ↗
Granted: May 28, 1991 Filed: Aug 3, 1988
Inventors
Ralph K. Ito
Frank W. LoGerfo
Assignee (at issue)
New England Deaconess Hospital 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.

Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 5,019,393
App. No.
07/227,728
Filed
1988-08-03
Granted
1991-05-28
Kind
A