Patent Leaderboard
USPTO Patent Rankings
Data through Dec 31, 2025
Search
Companies
Inventors
Cities
States
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
›
Companies
›
National Oilwell Dht
ND
National Oilwell Dht
— 63 Patents
Rank
(All Time):
#10,768
of
106,120
Top 15%
91
inventors
63
Patents All Time
Top Inventors at National Oilwell Dht
All Time
Showing
1–50
of
91
inventors
Rank
Name
Patents
1
Jeffery Ronald Clausen
7
1
Reza Rahmani
7
1
Russell C. Gilleylen
7
#4
Harold A. Sreshta
6
#4
Jiinjen Albert Sue
6
#4
Michael Dean Hughes
6
#7
Guodong Zhan
5
#7
Kevin W. Clark
5
#7
Nicholas Ryan Marchand
5
#10
C. Steven Isaacks
4
#10
Navid Omidvar
4
#10
Thang Vo
4
#13
Aaron Schen
3
#13
Alamzeb Hafeez Khan
3
#13
Anil Kumar
3
#13
Brandon C. Epperson
3
#13
David Ross
3
#13
Deepthi Raj Setlur
3
#13
Gregg A. Bosley
3
#13
Gregory Edward Leuenberger
3
#13
Jacob Riddel
3
#13
James R. Streater, Jr.
3
#13
Tjandra Sukendro
3
#24
Avinash Hariprasad Cuddapah
2
#24
Biju Pillai Kumar
2
#24
Bradley S. Ivie
2
#24
Brian McCarthy
2
#24
Harry P. Hiebeler
2
#24
Jeries Abujries
2
#24
Jimmy Livingston
2
#24
John F. Bradford
2
#24
John P. Smid
2
#24
Mark K. Adam
2
#24
Mark Jonathan Francis
2
#24
Michael Scott Nixon
2
#24
Mike Rossing
2
#24
Noe Tony Cordova
2
#24
Roman Kvasnytsia
2
#24
Robert Warner
2
#24
Ryan Basson Graham
2
#24
Sean Matthew Donald
2
#24
Wei Liu
2
#24
Ying Wang
2
#44
Aditya V. Soman
1
#44
Afshin Babaie Aghdam
1
#44
Alejandro Castillo
1
#44
Alan Martyn Eddison
1
#44
Alastair Henry Walter Macfarlane
1
#44
Alison Paige McVea
1
#44
Ali Akbar Moslemi
1
1
2
Next »
Related Companies
Rockspoon
63
Tempus Labs
63
Clearpath Robotics
63
Micro Mobio
63
Metabasis Therapeutics
63
Central Motor Wheel Co.
63
Foro Energy
63
Respivert
63
Zimmer Knee Creations
63