Granted Patent
Utility
US 6,338,757 · App. 09/582,918
Single crystal pull-up apparatus
Inventors:
Manabu Nishimoto, Masahiko Okui, Takayuki Kubo, Shingo Kizaki, Junji Horii
Patented Case
View Patent ↗
Granted: Jan 15, 2002
Filed: Jul 7, 2000
Inventors
Manabu Nishimoto
Masahiko Okui
Takayuki Kubo
Shingo Kizaki
Junji Horii
Assignee (at issue)
SUMITOMO METAL INDUSTRIES, 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.