Granted Patent
Utility
US 5,594,178 · App. 08/552,118
Strength evaluation method for brittle material pieces
Inventors:
Hideo Takahashi, Shinji Tanaka, Hiroshi Maeno
Patented Case
View Patent ↗
Granted: Jan 14, 1997
Filed: Nov 2, 1995
Inventors
Hideo Takahashi
Shinji Tanaka
Hiroshi Maeno
Assignee (at issue)
ASAHI GLASS 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.