Granted Patent
Utility
US 6,313,182 · App. 09/304,607
Acetylenic diol ethylene oxide/propylene oxide adducts and processes for their manufacture
Inventors:
Kevin Rodney Lassila, Paula Ann Uhrin
Patented Case
View Patent ↗
Granted: Nov 6, 2001
Filed: May 4, 1999
Inventors
Kevin Rodney Lassila
Paula Ann Uhrin
Assignee (at issue)
Air Products and Chemicals, 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.