Granted Patent
Utility
US 4,235,753 · App. 06/021,214
Zeolitized composite bodies and manufacture thereof
Inventors:
Stanley M. Brown, Gerald M. Woltermann
Patented Case
View Patent ↗
Granted: Nov 25, 1980
Filed: Mar 16, 1979
Inventors
Stanley M. Brown
Gerald M. Woltermann
Assignee (at issue)
Engelhard Minerals & Chemicals 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.