Granted Patent
Utility
US 4,855,403 · App. 06/768,445
Connected branch copolymers, methods for their production, and copying materials including same
Inventors:
Debra J. Meschke, Kenneth L. Hoy
Patented Case
View Patent ↗
Granted: Aug 8, 1989
Filed: Aug 22, 1985
Inventors
Debra J. Meschke
Kenneth L. Hoy
Assignee (at issue)
Union Carbide 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.