Granted Patent
Utility
US 5,135,697 · App. 07/575,452
Polyester copolymer fiber having enhanced strength and dyeability properties
Inventors:
Joseph A. Roderiguez, Theodore D. Meiss
Patented Case
View Patent ↗
Granted: Aug 4, 1992
Filed: Aug 28, 1990
Inventors
Joseph A. Roderiguez
Theodore D. Meiss
Assignee (at issue)
Hoescht 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.