Granted Patent
Utility
US 6,444,842 · App. 09/529,899
Continuous process for the production of carboxylic acid esters of alkylene glycol monoalkyl ethers
Inventors:
H. Robert Gerberich, R. Jay Warner
Patented Case
View Patent ↗
Granted: Sep 3, 2002
Filed: Apr 19, 2000
Inventors
H. Robert Gerberich
R. Jay Warner
Assignee (at issue)
Celanese International Corporation
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.