Granted Patent
Utility
US 6,818,161 · App. 10/153,910
Molded body of thermoplastic resin having sound absorption characteristics
Inventors:
Hisao Tokoro, Hiroshi Yamazaki, Satoru Shioya, Mitsuru Shinohara, Akinobu Hira
Patented Case
View Patent ↗
Granted: Nov 16, 2004
Filed: May 24, 2002
Inventors
Hisao Tokoro
Hiroshi Yamazaki
Satoru Shioya
Mitsuru Shinohara
Akinobu Hira
Assignee (at issue)
JSP 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.