Granted Patent
Utility
US 4,356,102 · App. 06/199,589
Dichroic liquid crystal compositions containing anthraquinone-based dyes
Inventors:
Sigfried Aftergut, Herbert S. Cole, Jr.
Patented Case
View Patent ↗
Granted: Oct 26, 1982
Filed: Oct 22, 1980
Inventors
Sigfried Aftergut
Herbert S. Cole, Jr.
Assignee (at issue)
General Electric Company
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.