Granted Patent
Utility
US 4,789,596 · App. 07/126,203
Dopant coated bead-like silicon particles
Inventors:
Robert H. Allen, Jameel Ibrahim
Patented Case
View Patent ↗
Granted: Dec 6, 1988
Filed: Nov 27, 1987
Inventors
Robert H. Allen
Jameel Ibrahim
Assignee (at issue)
Ethyl 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.