Granted Patent
Utility
US 6,258,893 · App. 09/424,001
Unoriented polypropylene molding
Inventors:
Chikashi Okayama, Takanori Nakashima, Yuya Ishimoto, Shinji Nakata, Yasuhiro Mochizuki, Shinichi Akitaya, Yoshitaka Sumi
Patented Case
View Patent ↗
Granted: Jul 10, 2001
Filed: Nov 15, 1999
Inventors
Chikashi Okayama
Takanori Nakashima
Yuya Ishimoto
Shinji Nakata
Yasuhiro Mochizuki
Shinichi Akitaya
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.