Skip to content
Patent Leaderboard
USPTO Patent Rankings
Data through Dec 31, 2025
Search
Companies
Universities
Inventors
Cities
States
Technologies
Top Patents
Inventor 500
Select ranking year
All Time
2025
2024
2023
2022
2021
2020
2019
2018
2017
2016
2015
2014
2013
2012
2011
2010
2009
2008
2007
2006
2005
2004
2003
2002
2001
2000
1999
1998
1997
1996
1995
1994
1993
1992
1991
1990
1989
1988
1987
1986
1985
1984
1983
1982
1981
1980
Home
›
2020
›
Inventors
›
Christine M. Duncan
CD
Christine M. Duncan
— 1 Patent in 2020
Sioux Falls, SD
:
#27
of
81
inventors
Top 35%
South Dakota
:
#71
of
263
inventors
Top 30%
Overall
(2020):
#519,744
of
565,922
Top 95%
1
Patents 2020
Issued Patents
2020
Showing
1–1
of
1
patents
Patent #
Title
Co-Inventors
Date
10638860
Contoured pillow
—
2020-05-05
Nearby-Ranked Inventors
Christopher David Dunn
1
Christopher Dunn
1
Christopher Lorenzo Dunn
1
Christopher T. Dunn
1
Charlie DUNCHEON
1
Christopher Duncan
1
Christopher K. Duncan
1
Cherie M. Duncan
1
Christoph Dumschat
1