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Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Robert J. Christopher — 10 Patents

IBM: 10 patents #10,925 of 70,183Top 20%
Chapel Hill, NC: #343 of 1,999 inventorsTop 20%
North Carolina: #5,314 of 45,564 inventorsTop 15%
Overall (All Time): #481,000 of 4,157,543Top 15%
10 Patents All Time
Robert J. Christopher has been granted 10 US patents while listed as an inventor at IBM. The first was granted in 1985 and the most recent in September 2016. Robert J. Christopher ranks #481,000 of 4,157,543 US inventors in our database (top 11.6%). Patent records list Robert J. Christopher in Chapel Hill, NC, US.

Patents per Year

Patents granted per year, 1985 to 2016Bar chart with a peak of 2 patents in 2012.peak 21985: 1 patents19851993: 1 patents19932004: 1 patents20042006: 1 patents20062012: 2 patents20122013: 2 patents20132016: 2 patents2016

Issued Patents All Time

Showing 1–10 of 10 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
9436484 Synchronization of data between an electronic computing mobile device and an electronic computing dockstation William T. Byrne, Paul D. Kangas, Daniel M. Ranck 2016-09-06 $4,975,000
9436485 Synchronization of data between an electronic computing mobile device and an electronic computing dockstation William T. Byrne, Paul D. Kangas, Daniel M. Ranck 2016-09-06 $4,975,000
8595682 Phase compensation in a differential pair of transmission lines William T. Byrne, Paul D. Kangas, Pravin Patel, Daniel M. Ranck 2013-11-26 $4,812,000
8390393 Pre-distortion based impedence discontinuity remediation for via stubs and connectors in printed circuit board design Justin P. Bandholz, Moises Cases, Daniel N. de Araujo, Bradley D. Herrman, Erdem Matoglu +3 more 2013-03-05 $6,102,000
8289101 Pre-distortion based impedence discontinuity remediation for via stubs and connectors in printed circuit board design Justin P. Bandholz, Moises Cases, Daniel N. de Araujo, Bradley D. Herrman, Erdem Matoglu +3 more 2012-10-16 $3,795,000
8185682 USB 2.0 bi-directional bus channel with boost circuitry Justin P. Bandholz, Joseph Jacobs, Pravin Patel 2012-05-22 $8,891,000
7098693 Bi-directional voltage translator Mark E. Andresen, James J. Parsonese, William Roff Thomas, Wilson Velez, David Vieira +1 more 2006-08-29 $3,832,000
6732268 Method and system for controlling orientation-dependent components in a computer system William Craig Troop 2004-05-04 $7,309,000
5220211 High speed bus transceiver with fault tolerant design for hot pluggable applications Donald J. DaCosta, Joseph Curtis Diepenbrock, Phillip R. Epley 1993-06-15 $8,023,000
4516266 Entity control for raster displays Robert F. Walker 1985-05-07 $29,981,000