Granted Patent
Utility
US 5,086,004 · App. 07/534,654
Isolation of layered P-N junctions by diffusion to semi-insulating substrate and implantation of top layer
Inventor:
Victor E. Quintana
Patented Case
View Patent ↗
Granted: Feb 4, 1992
Filed: Jun 1, 1990
Inventor
Victor E. Quintana
Assignee (at issue)
Polaroid 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.