Granted Patent
Utility
US 5,087,521 · App. 06/914,558
Modified polymer containing articles
Inventors:
Jae-Hak Choi, John J. Mottine, Jr., Walter J. Sparzak, Sr., Walter Tates, William C. Vesperman
Patented Case
View Patent ↗
Granted: Feb 11, 1992
Filed: Oct 2, 1986
Inventors
Jae-Hak Choi
John J. Mottine, Jr.
Walter J. Sparzak, Sr.
Walter Tates
William C. Vesperman
Assignee (at issue)
AT&T Bell Laboratories
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.