Granted Patent
Utility
US 6,136,877 · App. 09/372,499
142b/124 blowing agent blends
Inventor:
Jinhuang Wu
Patented Case
View Patent ↗
Granted: Oct 24, 2000
Filed: Aug 11, 1999
Inventor
Jinhuang Wu
Assignee (at issue)
Elf Atochem North America, 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.