Granted Patent
Utility
US 6,495,255 · App. 09/888,047
Polyolefin splittable conjugate fiber and a fiber structure using the same
Inventors:
Toshihiko Tsutsui, Masaru Nishijima, Kazuyuki Sakamoto
Patented Case
View Patent ↗
Granted: Dec 17, 2002
Filed: Jun 22, 2001
Inventors
Toshihiko Tsutsui
Masaru Nishijima
Kazuyuki Sakamoto
Assignees (at issue)
Chisso Corporation
CHISSO POLYPRO FIBER COMPANY LIMITED
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.