Patent Leaderboard
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
Search
Companies
Inventors
Cities
States
ST
Stepan
Rank (All Time):
#3425
of 106,127
Top 4%
221 inventors
226
Patents All Time
Top Inventors at Stepan
All Time
Showing 1–50 of 221 inventors
Rank
Name
Patents
1
Randal J. Bernhardt
54
2
Ronald A. Masters
31
3
Patrick Shane Wolfe
29
#4
Aaron Brown
27
#5
Dennis S. Murphy
24
#6
Andrew D. Malec
23
#7
Dave R. Allen
22
#7
Gregory P. Dado
22
#9
Xue Min Dong
20
#10
Patti Skelton
19
#11
Warren A. Kaplan
18
#12
Branko Sajic
17
#13
Gary Luebke
16
#13
Irene Shapiro
16
#13
Marcos Alonso
16
#16
Brian Sook
15
#16
Renee Luka
15
#18
Michael Wiester
14
#19
Laura Lee Whitlock
12
#19
Michael R. Terry
12
#21
Brian Holland
10
#21
Irma Ryklin
10
#21
Sangeeta Ganguly-Mink
10
#24
George Magnus
9
#24
Jeremy Aaron Weitgenant
9
#24
Kelly Buchek
9
#24
Michael E. O'Brien
9
#24
Sarah Wolek
9
#24
Wilma Gorman
9
#30
David R. Allen
8
#30
Paul Knox
8
#30
Aaron W. Sanders
8
#30
Alfred K. Schultz
8
#34
Christopher A. Gariepy
7
#34
Franz J. Luxem
7
#34
John C. Hutchison
7
#34
Lourdes R. Alonso
7
#34
Marshall J. Nepras
7
#34
Melvin L. Loeb
7
#34
Rick Tabor
7
#34
Robert J. Wood
7
#42
David J. Norberg
6
#42
E. Carolina Rojas
6
#42
Lawrence A. Munie
6
#42
Matthew I. Levinson
6
#42
Paul Neill
6
#42
Adnan Siddiqui
6
#48
Brian K. Mirous
5
#48
Douglas Hillshafer
5
#48
Gregory Wallace
5
1
2
3
Next »