Granted Patent
Utility
US 6,200,383 · App. 09/304,499
Melt depth control for semiconductor materials grown from a melt
Inventors:
Richard Wallace, Richard C. Krauchune
Patented Case
View Patent ↗
Granted: Mar 13, 2001
Filed: May 3, 1999
Inventors
Richard Wallace
Richard C. Krauchune
Assignee (at issue)
Evergreen Solar, Inc.
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.