Granted Patent
Utility
US 6,390,439 · App. 09/287,370
Hybrid molds for molten solder screening process
Inventors:
Steven A. Cordes, David Danovitch, Peter A. Gruber, James L. Speidell, Joseph Zinter
Patented Case
View Patent ↗
Granted: May 21, 2002
Filed: Apr 7, 1999
Inventors
Steven A. Cordes
David Danovitch
Peter A. Gruber
James L. Speidell
Joseph Zinter
Assignee (at issue)
International Business Machines 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.