Granted Patent
Utility
US 4,328,366 · App. 06/124,650
Treatment of waste stream from pentaerythritol production
Inventors:
Charles E. Winslow, Jr., Leonard C. Ellis
Patented Case
View Patent ↗
Granted: May 4, 1982
Filed: Feb 25, 1980
Inventors
Charles E. Winslow, Jr.
Leonard C. Ellis
Assignee (at issue)
Virginia Chemicals 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.