Inventor · disambiguated record
Hans Christopher Sowa
Also filed as: SOWA HANS C · SOWA HANS CHRISTOPHER
16 granted patents·1 pending application·228 citations·filing 1991–2018
93Inventor score
Top patents by PatentIndex Score
17 records- 0191US7123719B2Method and apparatus for providing authentication in a communication systemMOTOROLA INC·Filed 2001·Granted Oct 17, 2006·70 cites·41 claims
- 0287US7266687B2Method and apparatus for storing and distributing encryption keysMOTOROLA INC·Filed 2001·Granted Sep 4, 2007·46 cites·22 claims
- 0375US9332428B2Method and device for managing encrypted group rekeying in a radio network link layer encryption systemMOTOROLA SOLUTIONS INC·Filed 2014·Granted May 3, 2016·3 cites·6 claims
- 0473US7522727B2Method and apparatus for providing authentication in a communication systemMOTOROLA INC·Filed 2006·Granted Apr 21, 2009·4 cites·13 claims
- 0573US7424116B2Method and apparatus for providing authentication in a communication systemMOTOROLA INC·Filed 2006·Granted Sep 9, 2008·4 cites·20 claims
- 0667US7707419B2Method and apparatus for storing and distributing encryption keysMOTOROLA INC·Filed 2007·Granted Apr 27, 2010·2 cites·7 claims
- 0762US8948378B2Method and device for rekeying in a radio network link layer encryption systemMOTOROLA SOLUTIONS INC·Filed 2012·Granted Feb 3, 2015·1 cites·23 claims
- 0861US5412722AEncryption key managementMOTOROLA INC·Filed 1993·Granted May 2, 1995·48 cites·10 claims
- 0958US8964987B2Method and apparatus for storing and distributing encryption keysSOWA HANS CHRISTOPHER·Filed 2007·Granted Feb 24, 2015·1 cites·13 claims
- 1053US5619572AMethod and apparatus for providing secure communications for a requested callMOTOROLA INC·Filed 1994·Granted Apr 8, 1997·25 cites·10 claims
- 1152US7840009B2Method and apparatus for storing and distributing encryption keysMOTOROLA INC·Filed 2007·Granted Nov 23, 2010·0 cites·18 claims
- 1251US5161189AEncryption and decryption of chained messagesMOTOROLA INC·Filed 1991·Granted Nov 3, 1992·24 cites·23 claims
- 1349US8781132B2Method and device for managing encrypted group rekeying in a radio network link layer encryption systemMOTOROLA SOLUTIONS INC·Filed 2012·Granted Jul 15, 2014·0 cites·25 claims
- 1448US10524260B2Device, system and method for preventing audio lossMOTOROLA SOLUTIONS INC·Filed 2018·Granted Dec 31, 2019·0 cites·20 claims
- 1548US8817989B2Method and apparatus for storing and distributing encryption keysSOWA HANS CHRISTOPHER·Filed 2007·Granted Aug 26, 2014·0 cites·19 claims
- 1643US9402166B1Method and apparatus for assigning a talk group to a radio within a communication systemMOTOROLA SOLUTIONS INC·Filed 2015·Granted Jul 26, 2016·0 cites·10 claims
- 1741US2006233371A1Roaming encryption key rekeying apparatus and methodSOWA HANS C·Filed 2006·Application pending·0 cites
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