Granted Patent
Utility
US 5,994,463 · App. 09/047,598
Polycarbonate/graft polymer moulding compositions with reduced deposit formation
Inventors:
Thomas Eckel, Dieter Wittmann, Heinrich Alberts, Bahman Sarabi, Herbert Eichenauer, Edgar Leitz
Patented Case
View Patent ↗
Granted: Nov 30, 1999
Filed: Mar 25, 1998
Inventors
Thomas Eckel
Dieter Wittmann
Heinrich Alberts
Bahman Sarabi
Herbert Eichenauer
Edgar Leitz
Assignee (at issue)
Bayer Aktiengesellschaft
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.