Granted Patent
Utility
US 5,976,411 · App. 08/991,705
Laser marking of phosphorescent plastic articles
Inventors:
Ke Feng, Jerry Alan Bodi
Patented Case
View Patent ↗
Granted: Nov 2, 1999
Filed: Dec 16, 1997
Inventors
Ke Feng
Jerry Alan Bodi
Assignee (at issue)
M.A. HannaColor
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.