Granted Patent
Utility
US 5,140,093 · App. 07/729,968
Melt-processable thermotropic polyesters having fluorine containing linking groups
Inventors:
Balaram Gupta, Larry F. Charbonneau, Gordon Calundann, Tai-Shung Chung
Patented Case
View Patent ↗
Granted: Aug 18, 1992
Filed: Jul 15, 1991
Inventors
Balaram Gupta
Larry F. Charbonneau
Gordon Calundann
Tai-Shung Chung
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.