Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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David W. Hufford — 12 Patents

KTKey Technology: 8 patents #4 of 131Top 4%
CRConagra Foods Rdm: 2 patents #151 of 330Top 50%
Walla Walla, WA: #13 of 148 inventorsTop 9%
Washington: #8,631 of 76,902 inventorsTop 15%
Overall (All Time): #396,045 of 4,157,543Top 10%
12 Patents All Time
David W. Hufford has been granted 12 US patents while listed as an inventor at Key Technology. The first was granted in 1994 and the most recent in April 2018. David W. Hufford ranks #396,045 of 4,157,543 US inventors in our database (top 9.5%). Patent records list David W. Hufford in Walla Walla, WA, US.

Issued Patents All Time

Showing 1–12 of 12 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
9950917 Beverage preservation and dispensing device Brian A. Chapman 2018-04-24
9598246 Fluid-based article distribution and sorting system William Thomas Hockett, Frederick D. Webb, Michael Christopher Metcalf, Ronald R. Huff, Charles Denio Kirkbride +1 more 2017-03-21
9102477 Article distribution and sorting system Charles Denio Kirkbride, Greg Robert Lambier, Rudy Sanchez, Steve Crawford, James Ruff 2015-08-11
9027759 Sorting apparatus Peter T. Jones, Brandon T. Hall, Timothy L. Justice, Tracy L. McGowen, Gerald R. Richert +2 more 2015-05-12 $545,000
8714362 Sorting apparatus Peter T. Jones, Brandon T. Hall, Timothy L. Justice, Tracy L. McGowen, Gerald R. Richert +3 more 2014-05-06 $664,000
8708153 Grape processing apparatus Tracy L. McGowen, Quentin Kemph 2014-04-29 $703,000
8517168 Spring for a vibratory conveyor 2013-08-27 $740,000
8517169 Article distribution and sorting system Charles Denio Kirkbride, Greg Robert Lambier, Rudy Sanchez, Steve Crawford, James Ruff 2013-08-27
6460680 Diverter assembly for use with a vibratory conveyor 2002-10-08 $535,000
6286658 Vibratory conveyor 2001-09-11
5555967 Vibratory distributor for bulk articles 1996-09-17 $1,600,000
5289759 Forced steam bulk food cooker/blancher 1994-03-01 $591,000