Granted Patent
Utility
US 5,507,257 · App. 08/230,124
Value guide member formed of Fe-based sintered alloy having excellent wear and abrasion resistance
Inventors:
Masaaki Sakai, Takashi Kobayashi, Kazuyuki Hoshino, Ichiro Tanaka, Masashi Sasaki
Patented Case
View Patent ↗
Granted: Apr 16, 1996
Filed: Apr 20, 1994
Inventors
Masaaki Sakai
Takashi Kobayashi
Kazuyuki Hoshino
Ichiro Tanaka
Masashi Sasaki
Assignees (at issue)
MITSUBISHI MATERIALS CORPORATION
MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHA
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.