Granted Patent
Utility
US 6,315,931 · App. 09/367,591
Method of producing a foamed granulate
Inventors:
Juergen Bruning, Otto Deseke, Joachim Meyke
Patented Case
View Patent ↗
Granted: Nov 13, 2001
Filed: Nov 5, 1999
Inventors
Juergen Bruning
Otto Deseke
Joachim Meyke
Assignee (at issue)
Gefinex Polymerschaume GmbH
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.