Granted Patent
Utility
US 6,556,754 · App. 09/927,655
Three dimensional optical circuit
Inventors:
Richard L. Simmons, Curtis L. Shoemaker, Kenneth L. Kornele, Harry A. Loder, Edward B. Lurie
Patented Case
View Patent ↗
Granted: Apr 29, 2003
Filed: Aug 10, 2001
Inventors
Richard L. Simmons
Curtis L. Shoemaker
Kenneth L. Kornele
Harry A. Loder
Edward B. Lurie
Assignee (at issue)
3M INNOVATIVE PROPERTIES 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.