Granted Patent
Utility
US 5,264,477 · App. 07/922,704
Liquid crystalline polyesters containing metal terephthalate nucleating agents
Inventors:
Kurt F. Wissbrun, James P. Shepherd
Patented Case
View Patent ↗
Granted: Nov 23, 1993
Filed: Jul 28, 1992
Inventors
Kurt F. Wissbrun
James P. Shepherd
Assignee (at issue)
Hoechst Celanese 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.