Granted Patent
Utility
US 5,685,953 · App. 08/489,077
Ozone bleaching with an organic solvent and mineral acid
Inventors:
Marco Solinas, Thomas H. Murphy, Adriaan Reinhard Pieter van Heiningen, Yonghao Ni
Patented Case
View Patent ↗
Granted: Nov 11, 1997
Filed: Jun 9, 1995
Inventors
Marco Solinas
Thomas H. Murphy
Adriaan Reinhard Pieter van Heiningen
Yonghao Ni
Assignee (at issue)
MacMillan Bloedel Limited
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.