Granted Patent
Utility
US 5,135,800 · App. 07/324,163
Obliquely oriented polypropylene cross film and fastening tape for paper diaper comprising said cross film
Inventors:
Haruki Nagaoka, Shuzo Sasagawa, Kazunari Nishino
Patented Case
View Patent ↗
Granted: Aug 4, 1992
Filed: Mar 13, 1989
Inventors
Haruki Nagaoka
Shuzo Sasagawa
Kazunari Nishino
Assignee (at issue)
Mitsui Petrochemical Industries, Ltd.
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.