Granted Patent
Utility
US 6,511,755 · App. 09/762,711
Polypropylene film and multilayered polypropylene film
Inventors:
Yasuhiro Mochizuki, Yoshitaka Morimoto, Takanori Nakashima, Taketo Hirose, Takayuki Hattori, Sinichi Akitaya, Youichi Kugimiya
Patented Case
View Patent ↗
Granted: Jan 28, 2003
Filed: Feb 12, 2001
Inventors
Yasuhiro Mochizuki
Yoshitaka Morimoto
Takanori Nakashima
Taketo Hirose
Takayuki Hattori
Sinichi Akitaya
Youichi Kugimiya
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.