Granted Patent
Utility
US 4,849,469 · App. 07/099,193
Void control in thermoplastics containing silicone interpenetrating polymer networks
Inventors:
Jane M. Crosby, MaryGail K. Hutchins, Susan K. Ward
Patented Case
View Patent ↗
Granted: Jul 18, 1989
Filed: Sep 21, 1987
Inventors
Jane M. Crosby
MaryGail K. Hutchins
Susan K. Ward
Assignee (at issue)
ICI Americas, 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.