Granted Patent
Utility
US 6,312,804 · App. 09/180,383
Vinyl chloride fibers and process for preparing the same
Inventors:
Kazumasa Yamane, Hiroshi Yokoyama, Yuji Kubo, Ikuo Okino
Patented Case
View Patent ↗
Granted: Nov 6, 2001
Filed: Nov 6, 1998
Inventors
Kazumasa Yamane
Hiroshi Yokoyama
Yuji Kubo
Ikuo Okino
Assignee (at issue)
KANEKA 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.