Granted Patent
Utility
US 5,724,177 · App. 08/434,159
Electrochromic devices and methods
Inventors:
Frank Ellis, John E. Van Dine, V. D. Parkhe
Patented Case
View Patent ↗
Granted: Mar 3, 1998
Filed: May 2, 1995
Inventors
Frank Ellis
John E. Van Dine
V. D. Parkhe
Assignee (at issue)
Sun Active Glass Electrochromics, Inc.
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.