Granted Patent
Utility
US 5,611,857 · App. 08/474,662
Apparatus for producing single crystals
Inventors:
Yoshihiro Akashi, Kaoru Kuramochi, Setsuo Okamoto, Yasuji Tsujimoto, Makoto Ito
Patented Case
View Patent ↗
Granted: Mar 18, 1997
Filed: Jun 7, 1995
Inventors
Yoshihiro Akashi
Kaoru Kuramochi
Setsuo Okamoto
Yasuji Tsujimoto
Makoto Ito
Assignee (at issue)
Sumitomo Sitix Corporation
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.