Granted Patent
Utility
US 6,609,196 · App. 09/180,377
E-mail firewall with stored key encryption/decryption
Inventors:
Robert D. Dickinson, III, Sathvik Krishnamurthy
Patented Case
View Patent ↗
Granted: Aug 19, 2003
Filed: Nov 3, 1998
Inventors
Robert D. Dickinson, III
Sathvik Krishnamurthy
Assignee (at issue)
Tumbleweed Communications Corp.
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.