Granted Patent
Utility
US 5,124,428 · App. 07/708,493
Amide-imide resin for production of heat-resistant fiber
Inventors:
Howard B. Yokelson, Stefanos L. Sakellarides, Raymond T. Behrends, Marifaith Hackett
Patented Case
View Patent ↗
Granted: Jun 23, 1992
Filed: May 31, 1991
Inventors
Howard B. Yokelson
Stefanos L. Sakellarides
Raymond T. Behrends
Marifaith Hackett
Assignee (at issue)
Amoco 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.