Granted Patent
Utility
US 6,429,262 · App. 09/674,701
Molded polypropylene
Inventors:
Shinichi Akitaya, Takanori Nakashima, Hitoshi Kuramochi, Yoshitaka Sumi
Patented Case
View Patent ↗
Granted: Aug 6, 2002
Filed: Nov 6, 2000
Inventors
Shinichi Akitaya
Takanori Nakashima
Hitoshi Kuramochi
Yoshitaka Sumi
Assignee (at issue)
Chisso 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.