Granted Patent
Utility
US 5,785,940 · App. 08/617,456
Silicate reactor with submerged burners
Inventors:
J. Randol Carroll, William E. Breitenbach, William C. Combs
Patented Case
View Patent ↗
Granted: Jul 28, 1998
Filed: Mar 18, 1996
Inventors
J. Randol Carroll
William E. Breitenbach
William C. Combs
Assignee (at issue)
PQ 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.