Granted Patent
Utility
US 6,015,336 · App. 09/197,414
Grinding apparatus
Inventors:
Osamu Kubota, Katsunori Arai, Yuji Sato, Takayuki Yui, Toshihisa Kanakubo
Patented Case
View Patent ↗
Granted: Jan 18, 2000
Filed: Nov 23, 1998
Inventors
Osamu Kubota
Katsunori Arai
Yuji Sato
Takayuki Yui
Toshihisa Kanakubo
Assignee (at issue)
Zexel GmbH
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.