Granted Patent
Utility
US 5,733,710 · App. 08/498,653
Method for manufacturing a master die for a diffusion plate and diffusion plate manufactured by said method
Inventors:
Hiroshi Kuboya, Toshiharu Takahashi, Makoto Iki, Moriyasu Shirayanagi, Koichi Maruyama, Teruaki Hiyamuta, Takayuki Sensui
Patented Case
View Patent ↗
Granted: Mar 31, 1998
Filed: Jul 3, 1995
Inventors
Hiroshi Kuboya
Toshiharu Takahashi
Makoto Iki
Moriyasu Shirayanagi
Koichi Maruyama
Teruaki Hiyamuta
Takayuki Sensui
Assignee (at issue)
Asahi Kogaku 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.