Granted Patent
Utility
US 5,658,999 · App. 08/543,823
Syndiotactic polypropylene wax, production process thereof, and heating roll fixing-type toner composition making use of the wax
Inventors:
Norihide Inoue, Masahiro Kouno, Yoshiho Sonobe, Kazumi Mizutani, Tetsunosuke Shiomura, Nobuhiro Hirayama
Patented Case
View Patent ↗
Granted: Aug 19, 1997
Filed: Oct 16, 1995
Inventors
Norihide Inoue
Masahiro Kouno
Yoshiho Sonobe
Kazumi Mizutani
Tetsunosuke Shiomura
Nobuhiro Hirayama
Assignee (at issue)
Mitsui Toatsu Chemicals, Incorporated
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.