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
UR
Union Pacific Railroad
Rank (All Time):
#20548
of 106,127
Top 20%
46 inventors
30
Patents All Time
Top Inventors at Union Pacific Railroad
All Time
Showing 1–46 of 46 inventors
Rank
Name
Patents
1
Michael E. Iden
12
2
Wayne A. Kennedy
5
3
John P. Haenggi
4
3
Matthew M. Larson
4
#5
Brian L. Davis
3
#5
Srinivas Chundru
3
#7
Butch Lunsford
2
#7
Eric John Gehringer
2
#7
Mark Horne
2
#7
Michael Brückner
2
#7
Todd Snyder
2
#7
Troy N. James, Jr.
2
#13
Daniel Simkin
1
#13
Divya Kadam
1
#13
Evan Milton
1
#13
Glenn Allan Millar
1
#13
Hans Iwand
1
#13
James McDaniel
1
#13
Jake Wagner
1
#13
Jeffrey M. Girbach
1
#13
John Birkmann
1
#13
Joseph C. Budnick
1
#13
John M. Peters
1
#13
Jonathan Rodriguez
1
#13
Kathleen Ann Fenn
1
#13
Kevin David Oldknow
1
#13
Mark Anthoney Henry, Jr.
1
#13
Mark Victor Holland
1
#13
Moses LeDee
1
#13
Patrick J. Student
1
#13
Randy Groh
1
#13
Ryan Grudle
1
#13
Srini Nedunoori
1
#13
Steve Packwood
1
#13
Supriya Deshmukh
1
#13
Thomas Bartlett
1
#13
Thomas A. Kennedy
1
#13
Tim L. Prince
1
#13
Wayne L. Ronci
1
#13
Zach Royer
1
#13
Evan Freilich
1
#13
Kelechi Nwogu
1
#13
Tyler Chrisman
1
#13
Adrian Hernandez
1
#13
Allen H. Buchheit
1
#13
Andrew Bokenkamp
1