Granted Patent
Utility
US 6,797,202 · App. 10/087,914
Particles for electro-rheological fluid
Inventors:
Shigeki Endo, Howard See, Tasuku Saito, Koji Sakata, Kenji Fukuda, Youichiro Hara, Tatsuo Umeno
Patented Case
View Patent ↗
Granted: Sep 28, 2004
Filed: Mar 5, 2002
Inventors
Shigeki Endo
Howard See
Tasuku Saito
Koji Sakata
Kenji Fukuda
Youichiro Hara
Tatsuo Umeno
Assignees (at issue)
BRIDGESTONE CORPORATION
MITSUI MINING COMPANY, LIMITED
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.