Assignee
NAGEL ROBERT H
5 granted patents·1,704 citations·filing 1975–2008
Top patents by PatentIndex Score
5 records- 0198US7869591B1System and method for secure three-party communicationsNAGEL ROBERT H·Filed 2007·Granted Jan 11, 2011·157 cites·21 claims
- 0298US7181017B1System and method for secure three-party communicationsNAGEL ROBERT H·Filed 2002·Granted Feb 20, 2007·1.3k cites·25 claims
- 0397US8566247B1System and method for secure communications involving an intermediaryNAGEL ROBERT H·Filed 2008·Granted Oct 22, 2013·112 cites·20 claims
- 0496US4064490AInformation retrieval system having selected purpose variable function terminalNAGEL ROBERT H·Filed 1975·Granted Dec 20, 1977·143 cites·21 claims
- 0585US9118754B2System and method for providing a public/private telephone number systemNAGEL ROBERT H·Filed 2006·Granted Aug 25, 2015·14 cites·30 claims
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