Granted Patent
Utility
US 6,130,697 · App. 09/273,273
Thermal master making device
Inventors:
Yasumitsu Yokoyama, Yoshiyuki Shishido, Satoshi Katoh, Yasunobu Kidoura
Patented Case
View Patent ↗
Granted: Oct 10, 2000
Filed: Mar 22, 1999
Inventors
Yasumitsu Yokoyama
Yoshiyuki Shishido
Satoshi Katoh
Yasunobu Kidoura
Assignee (at issue)
Tohoku Ricoh 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.