Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Darrell E. Jefferson — 7 Patents

Xerox: 5 patents #2,266 of 8,622Top 30%
LILandis+Gyr Innovations: 2 patents #47 of 137Top 35%
Roswell, GA: #195 of 1,104 inventorsTop 20%
Georgia: #5,052 of 35,610 inventorsTop 15%
Overall (All Time): #680,018 of 4,157,543Top 20%
7 Patents All Time
Darrell E. Jefferson has been granted 7 US patents while listed as an inventor at Xerox. The first was granted in 1993 and the most recent in March 2020. Darrell E. Jefferson ranks #680,018 of 4,157,543 US inventors in our database (top 16.4%). Patent records list Darrell E. Jefferson in Roswell, GA, US.

Issued Patents All Time

Showing 1–7 of 7 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
10609573 Switching PANs while maintaining parent/child relationships Christopher Scott Hett, Lawrence Harris, James Patrick Hanley 2020-03-31
9270529 Distributed data transmission in data networks John Jacob 2016-02-23
5745596 Method and apparatus for performing text/image segmentation 1998-04-28 $7,797,000
5682250 Method and apparatus for reproducing an image without salt and pepper specks 1997-10-28 $7,671,000
5426514 Method of gray scaling facsimile images 1995-06-20 $14,922,000
5299018 System and method for storing received facsimile image data in computer memory 1994-03-29 $4,478,000
5241589 System and method for implementing telephone dialing rules 1993-08-31 $1,611,000