Granted Patent
Utility
US 6,582,759 · App. 10/132,942
Optical elements comprising a fluorinated surface treatment comprising urethane, ester or phosphate linkages
Inventors:
Zai-Ming Qiu, Naiyong Jing
Patented Case
View Patent ↗
Granted: Jun 24, 2003
Filed: Apr 26, 2002
Inventors
Zai-Ming Qiu
Naiyong Jing
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.