Granted Patent
Utility
US 4,511,639 · App. 06/365,454
Method for regenerating the carrier particles of a two-component developer consisting of carrier particles and toner
Inventors:
Joseph Knott, Walter Kopp
Patented Case
View Patent ↗
Granted: Apr 16, 1985
Filed: Apr 5, 1982
Inventors
Joseph Knott
Walter Kopp
Assignee (at issue)
Siemens 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.