Granted Patent
Utility
US 6,578,406 · App. 10/010,478
Vapochromic LED
Inventors:
Yoshihito Kunugi, Kent R. Mann, Larry L. Miller, Christopher L. Exstrom
Patented Case
View Patent ↗
Granted: Jun 17, 2003
Filed: Nov 5, 2001
Inventors
Yoshihito Kunugi
Kent R. Mann
Larry L. Miller
Christopher L. Exstrom
Assignee (at issue)
Regents of the University of Minnesota
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.