Granted Patent
Utility
US 5,916,383 · App. 08/890,774
Method of shot peening a hardened metal product with shot having high hardness
Inventors:
Hitoshi Rokutanda, Toru Takahashi, Junkou Kurosaki, Toshiroh Ito
Patented Case
View Patent ↗
Granted: Jun 29, 1999
Filed: Jul 11, 1997
Inventors
Hitoshi Rokutanda
Toru Takahashi
Junkou Kurosaki
Toshiroh Ito
Assignee (at issue)
SINTOKOGIO, 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.