Granted Patent
Utility
US 5,488,073 · App. 08/457,244
Azeotropic compositions of 1,1,1,4,4,4-hexafluorobutane and N-pentane and the use thereof in the production of foams
Inventors:
Joachim Werner, Scott A. Kane, Herman P. Doerge, Eric F. Boonstra
Patented Case
View Patent ↗
Granted: Jan 30, 1996
Filed: Jun 1, 1995
Inventors
Joachim Werner
Scott A. Kane
Herman P. Doerge
Eric F. Boonstra
Assignee (at issue)
Bayer Aktiengesellschaft
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.