Granted Patent
Utility
US 5,257,352 · App. 07/548,228
Input/output control method and system
Inventors:
Akira Yamamoto, Toshiaki Tsuboi, Takao Sato, Yoshihiro Asaka, Shigeo Honma, Shigeru Kishiro, Michio Miyazaki, Yoshiaki Kuwahara, Hiroyuki Kitajima
Patented Case
View Patent ↗
Granted: Oct 26, 1993
Filed: Jul 5, 1990
Inventors
Akira Yamamoto
Toshiaki Tsuboi
Takao Sato
Yoshihiro Asaka
Shigeo Honma
Shigeru Kishiro
Michio Miyazaki
Yoshiaki Kuwahara
Hiroyuki Kitajima
Assignees (at issue)
HITACHI, LTD.
Hitachi Micro Computer Engineering, 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.