Granted Patent
Utility
US 5,112,895 · App. 07/704,169
Weatherable graft polymers having improved impact retention and improved melt flow
Inventors:
Chuan-Ju Chen, Fred M. Peng
Patented Case
View Patent ↗
Granted: May 12, 1992
Filed: May 22, 1991
Inventors
Chuan-Ju Chen
Fred M. Peng
Assignee (at issue)
Monsanto 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.