Granted Patent
Utility
US 6,017,478 · App. 09/164,755
Method of making hollow bicomponent filaments
Inventors:
Diane R. Kent, Matthew B. Hoyt, Charles F. Helms, Jr.
Patented Case
View Patent ↗
Granted: Jan 25, 2000
Filed: Oct 1, 1998
Inventors
Diane R. Kent
Matthew B. Hoyt
Charles F. Helms, Jr.
Assignee (at issue)
BASF SE
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.