Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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David Ruff — 4 Patents

Xerox: 2 patents #3,932 of 8,622Top 50%
PSPsc Scanning: 1 patents #57 of 77Top 75%
Sherwood, OR: #93 of 276 inventorsTop 35%
Oregon: #8,577 of 28,073 inventorsTop 35%
Overall (All Time): #1,080,739 of 4,157,543Top 30%
4 Patents All Time
David Ruff has been granted 4 US patents while listed as an inventor at Xerox. The first was granted in 2001 and the most recent in January 2020. David Ruff ranks #1,080,739 of 4,157,543 US inventors in our database (top 26.0%). Patent records list David Ruff in Sherwood, OR, US.

Patents per Year

Patents granted per year, 2001 to 2020Bar chart with a peak of 1 patents in 2001.peak 12001: 1 patents20012011: 1 patents20112012: 1 patents20122020: 1 patents2020

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
10526601 Haploidome determination by digitized transposons Lei Xi, Xiaohui Wang, Marc Unger 2020-01-07
8256886 Materials and methods to produce desired image drum surface topography for solid ink jet Sean W. Harris, Mark S. Taft, Katherine D. Weston, Barry D. Reeves, Jignesh P. Sheth +4 more 2012-09-04 $1,774,000
8052244 Moveable sensor array and method of detecting location of calibration fault Cary Eric Sjolander, Scott J. Phillips, Kenneth R. Ossman, Barry D. Reeves 2011-11-08 $2,562,000
6230976 Pinless dithering assembly for data reading Christopher Sautter, James J. Jensen, Charles A. Orlick 2001-05-15