Granted Patent
Utility
US 5,326,547 · App. 08/053,527
Process for preparing polysilicon with diminished hydrogen content by using a two-step heating process
Inventors:
Robert H. Allen, James E. Boone
Patented Case
View Patent ↗
Granted: Jul 5, 1994
Filed: Apr 26, 1993
Inventors
Robert H. Allen
James E. Boone
Assignee (at issue)
ALBEMARLE 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.