Granted Patent
Utility
US 6,569,397 · App. 09/638,977
Very high purity fine powders and methods to produce such powders
Inventors:
Tapesh Yadav, Karl Pfaffenbach
Patented Case
View Patent ↗
Granted: May 27, 2003
Filed: Aug 15, 2000
Inventors
Tapesh Yadav
Karl Pfaffenbach
Assignee (at issue)
Tapesh Yadav
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.