Granted Patent
Utility
US 5,770,551 · App. 08/699,314
Amido- and imido- peroxycarboxylic acid bleach granules
Inventors:
Philip A. Block, Samuel Lin, Robert Madeira Andrews, Scott D. Manske
Patented Case
View Patent ↗
Granted: Jun 23, 1998
Filed: Aug 19, 1996
Inventors
Philip A. Block
Samuel Lin
Robert Madeira Andrews
Scott D. Manske
Assignee (at issue)
Lever Brothers Company, division of Conopco, 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.