DR

David Joseph Robertson

ZS Zixcorp Systems: 8 patents #2 of 36Top 6%
Nortel Networks Limited: 3 patents #1,060 of 5,294Top 25%
Rolls-Royce Plc: 1 patents #1,293 of 2,886Top 45%
Overall (All Time): #400,421 of 4,157,543Top 10%
12
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
12429096 Joint assembly and method of manufacturing thereof Oliver George Feaver, Daniel M. INNIS, Francisco L Palma 2025-09-30
11102192 Harvesting and distributing a certificate based on a DNS name Bryan Adam Joyner, Kelly Sue Morrison 2021-08-24
10834071 Harvesting and distributing a certificate based on a DNS name Bryan Adam Joyner, Kelly Sue Morrison 2020-11-10
10708238 Encrypted push message viewing system 2020-07-07
10567357 Secure transmission system with upgraded encryption strength 2020-02-18
10411902 Authenticating a system based on a certificate John Kalan, Charles A. Rego, Deryk Shane Agnew 2019-09-10
9602473 Secure message forwarding with sender controlled decryption John Kalan, Mark Stephen DeMichele, Bryan Adam Joyner, Charles A. Rego, Dorwin T. Shields, Jr. +1 more 2017-03-21
9509683 Multi-factor authentication Dena Terry Bauckman, Nigel Paul Johnson 2016-11-29
8984605 Multi-factor authentication Dena Terry Bauckman, Nigel Paul Johnson 2015-03-17
5027345 Digital key telephone system Timothy J. Littlewood, Ronald J. Maginley, Alan Stanley John Chapman, Terence Neil Thomas, Nadir Nizamuddin 1991-06-25
4893310 Digital key telephone system Ronald J. Maginley, Alan Stanley John Chapman, Terence Neil Thomas, Nadir Nizamuddin, John W. Williams +2 more 1990-01-09
4873682 Digital key telephone system George F. Irwin, Paul J. Smelters, Ronald J. Maginley 1989-10-10