Granted Patent
Utility
US 5,874,516 · App. 08/502,508
Nonfunctionalized poly(arylene ethers)
Inventors:
William F. Burgoyne, Jr., Lloyd M. Robeson, Raymond Nicholas Vrtis
Patented Case
View Patent ↗
Granted: Feb 23, 1999
Filed: Jul 13, 1995
Inventors
William F. Burgoyne, Jr.
Lloyd M. Robeson
Raymond Nicholas Vrtis
Assignee (at issue)
Air Products and Chemicals, Inc.
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.