Granted Patent
Utility
US 5,594,097 · App. 08/472,204
Polyether polyols
Inventors:
Pierre CHAFFANJON, Peter Frans Eugeen Maria Stroobants, Gerhard Jozef Bleys
Patented Case
View Patent ↗
Granted: Jan 14, 1997
Filed: Jun 7, 1995
Inventors
Pierre CHAFFANJON
Peter Frans Eugeen Maria Stroobants
Gerhard Jozef Bleys
Assignee (at issue)
IMPERIAL CHEMICAL INDUSTRIES 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.