Granted Patent
Utility
US 6,277,922 · App. 08/999,922
Disperant system for making polyvinyl chloride which produces low color chlorinated polyvinyl chloride
Inventors:
Zaev Sharaby, Robert G. Vielhaber
Patented Case
View Patent ↗
Granted: Aug 21, 2001
Filed: Oct 15, 1990
Inventors
Zaev Sharaby
Robert G. Vielhaber
Assignee (at issue)
PMD Holdings Corp.
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.