Granted Patent
Utility
US 5,703,557 · App. 08/797,855
Noise absorbing device
Inventors:
Takayuki Osada, Fumishiro Tsuda, Norio Saito, Takeji Ihara, Yoshio Wagatsuma, Hitoshi Moriya
Patented Case
View Patent ↗
Granted: Dec 30, 1997
Filed: Feb 10, 1997
Inventors
Takayuki Osada
Fumishiro Tsuda
Norio Saito
Takeji Ihara
Yoshio Wagatsuma
Hitoshi Moriya
Assignee (at issue)
TOKIN 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.