Granted Patent
Utility
US 6,676,741 · App. 10/371,801
Methods for producing enhanced interference pigments
Inventors:
Roger W. Phillips, Vladimir P. Raksha
Patented Case
View Patent ↗
Granted: Jan 13, 2004
Filed: Feb 20, 2003
Inventors
Roger W. Phillips
Vladimir P. Raksha
Assignee (at issue)
Flex Products, 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.