Granted Patent
Utility
US 6,569,525 · App. 09/843,427
Highly dispersible reinforcing polymeric fibers
Inventors:
Klaus-Alexander Rieder, Neal S. Berke, Michael Macklin, Anandakumar Ranganathan
Patented Case
View Patent ↗
Granted: May 27, 2003
Filed: Apr 25, 2001
Inventors
Klaus-Alexander Rieder
Neal S. Berke
Michael Macklin
Anandakumar Ranganathan
Assignee (at issue)
W.R. Grace & Co. Conn.
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.