Granted Patent
Utility
US 5,531,889 · App. 08/207,991
Method and apparatus for removing resist particles from stripping solutions for printed wireboards
Inventors:
David T. Baron, Alexander R. Taylor, Kuldip Singh Johal
Patented Case
View Patent ↗
Granted: Jul 2, 1996
Filed: Mar 8, 1994
Inventors
David T. Baron
Alexander R. Taylor
Kuldip Singh Johal
Assignee (at issue)
Atotech USA, Inc.
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.