Granted Patent
Utility
US 5,282,688 · App. 07/941,808
Sintered oil impregnated bearing and its manufacturing method
Inventors:
Noboru Kanezaki, Takeshi Tanaka, Yoshiaki Hayashi
Patented Case
View Patent ↗
Granted: Feb 1, 1994
Filed: Sep 8, 1992
Inventors
Noboru Kanezaki
Takeshi Tanaka
Yoshiaki Hayashi
Assignees (at issue)
MITSUBISHI MATERIALS CORPORATION
ASMO CO., LTD.
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.