Granted Patent
Utility
US 4,714,518 · App. 07/003,317
Dual layer encapsulation coating for III-V semiconductor compounds
Inventors:
Arumugam Satyanarayan, Aland K. Chin
Patented Case
View Patent ↗
Granted: Dec 22, 1987
Filed: Jan 14, 1987
Inventors
Arumugam Satyanarayan
Aland K. Chin
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.