Granted Patent
Utility
US 6,403,821 · App. 09/677,179
Catalyst composition and method for producing diaryl carbonates using nitrile as promoter
Inventors:
Eric James Pressman, Grigorii Lev Soloveichik, Bruce Fletcher Johnson, Kirill Vladimirovich Shalyaev
Patented Case
View Patent ↗
Granted: Jun 11, 2002
Filed: Oct 2, 2000
Inventors
Eric James Pressman
Grigorii Lev Soloveichik
Bruce Fletcher Johnson
Kirill Vladimirovich Shalyaev
Assignee (at issue)
General Electric Company
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.