Granted Patent
Utility
US 6,531,514 · App. 09/801,136
Dispersant slurries for making spandex
Inventors:
Thomas Edward Carney, Oliver Walter Gutsche, Kai-Volker Schubert
Patented Case
View Patent ↗
Granted: Mar 11, 2003
Filed: Mar 7, 2001
Inventors
Thomas Edward Carney
Oliver Walter Gutsche
Kai-Volker Schubert
Assignee (at issue)
E.I. DU PONT DE NEMOURS AND COMPANY
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.