Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Earth drilling and mining Patent Leaders in 2022 2022

Primary CPC class E21 · Section E

Rankings count each patent once by its primary Cooperative Patent Classification. All-time pages aggregate the full database; year pages use patent grant year.

Recent years: 2016201720182019202020212022202320242025

Patents per Year

Patents granted per year, 1996 to 2025Bar chart with a peak of 3,238 patents in 2019.peak 3,2381996: 634 patents19961997: 557 patents1998: 796 patents1999: 838 patents19992000: 974 patents2001: 1,102 patents2002: 1,020 patents20022003: 1,014 patents2004: 1,046 patents2005: 877 patents20052006: 1,183 patents2007: 1,049 patents2008: 1,132 patents20082009: 1,088 patents2010: 1,656 patents2011: 1,495 patents20112012: 1,736 patents2013: 1,847 patents2014: 2,135 patents20142015: 2,318 patents2016: 2,454 patents2017: 2,612 patents20172018: 2,721 patents2019: 3,238 patents2020: 3,076 patents20202021: 2,876 patents2022: 2,754 patents2023: 2,767 patents20232024: 2,676 patents2025: 2,630 patents2025

Top Inventors

Rank ↑ Inventor ↕ Patents ↕ Primary Company ↕
1 Michael Linley Fripp 59 Halliburton Energy Services
2 Stephen Michael Greci 29 Halliburton Energy Services
3 Chinthaka Pasan Gooneratne 27 Macquarie University
#4 Lonnie Carl Helms 25 Halliburton Energy Services
#5 Tony Yeung 23 Bj Energy Solutions
#6 Ricardo Rodriguez-Ramon 21 Bj Energy Solutions
#7 Timothy E. Moellendick 21 Saudi Arabian Oil
#8 Bodong Li 20 Saudi Arabian Oil
#9 Guodong Zhan 19 Saudi Arabian Oil
#10 Christopher Michael Jones 18 Halliburton Energy Services
#11 Dale E. Jamison 18 Halliburton Energy Services
#12 Ronald Glen Dusterhoft 16 Halliburton Energy Services
#13 Ahmed Al-Mousa 15 Saudi Arabian Oil
#14 Burkay Donderici 15 Halliburton Energy Services
#15 Christian Eitschberger 14 Dynaenergetics Europe Gmbh
#16 Joseph Foster 14 Bj Energy Solutions
#17 Min Mark Yuan 13 Halliburton Energy Services
#18 Ahmed A. Al-Ramadhan 12 Saudi Arabian Oil
#19 Frank Acosta 12 Halliburton Energy Services
#20 Mathew Dennis Rowe 11 Halliburton Energy Services
#21 Neelesh Deolalikar 11 Halliburton Energy Services
#22 Richard Decena Ornelaz 11 Halliburton Energy Services
#23 Srinath Madasu 11 Landmark Graphics
#24 Bin Dai 10 Halliburton Energy Services
#25 Carl J. Moberg 10 Caterpillar
#26 James Dan Vick, Jr. 10 Halliburton Energy Services
#27 Justin Fraczek 10 Ameriforge Group
#28 Mikko Jaaskelainen 10 Halliburton Energy Services
#29 Michael C. Romer 10 ExxonMobil
#30 Philip D. Nguyen 10 Halliburton Energy Services
#31 Rajesh Parameshwaraiah 10 Halliburton Energy Services
#32 Robello Samuel 10 Landmark Graphics
#33 Jinjiang Xiao 9 Saudi Arabian Oil
#34 John L. Maida 9 Halliburton Energy Services
#35 Kenneth Mikalsen 9 Canrig Robotic Technologies As
#36 Keshava Prasad Rangarajan 9 Landmark Graphics
#37 Richard Wayne Bradley 9 Hunting Titan
#38 Stanley V. Stephenson 9 Halliburton Energy Services
#39 Thomas Jules Frosell 9 Halliburton Energy Services
#40 Xiaoguang Allan Zhong 9 Halliburton Energy Services
#41 Abdulaziz S. Al-Qasim 8 Saudi Arabian Oil
#42 Dale Langford 8 Hunting Titan
#43 David Joe Steele 8 Halliburton Energy Services
#44 Faraidoon Pundole 8 Hunting Titan
#45 Hsu-Hsiang Wu 8 Halliburton Energy Services
#46 Liam McNelis 8 Dynaenergetics Europe Gmbh
#47 Mohamed Ibrahim Saraya 8 Vertice Oil Tools
#48 Randall S. Shafer 8 —
#49 Sameeh Issa Batarseh 8 Saudi Arabian Oil
#50 Thilo Scharf 8 Dynaenergetics Europe Gmbh
#51 Volker Peters 8 Baker Hughes Holdings
#52 Zachary William Walton 8 Halliburton Energy Services
#53 Andres Alvarez 7 Bj Energy Solutions
#54 Andrew Penno 7 Halliburton Energy Services
#55 Anthony Herman Van Zuilekom 7 Halliburton Energy Services
#56 Brock Watson 7 Thru Tubing Solutions
#57 Christopher C. Hoelscher 7 Halliburton Energy Services
#58 Donn J. Brown 7 Halliburton Energy Services
#59 Erik Van Steveninck 7 Baker Hughes Oilfield Operations
#60 Garrett S. Boyd 7 Flowco Production Solutions
#61 Larry T. Palmer 7 Baker Hughes Holdings
#62 Marius Neacsu 7 Saudi Arabian Oil
#63 Michael Affleck 7 Saudi Arabian Oil
#64 Mitchell A. Boyd 7 Flowco Production Solutions
#65 Michael Finke 7 Halliburton Energy Services
#66 Neil Hepburn 7 Halliburton Energy Services
#67 Paul Carragher 7 Bisn Tec
#68 Philippe Quero 7 Halliburton Energy Services
#69 Ravi P. Nanayakkara 7 Halliburton Energy Services
#70 Roger L. Schultz 7 Thru Tubing Solutions
#71 Stephen Yeldell 7 Schlumberger Technology
#72 Abdullah Al-Yami 6 Saudi Arabian Oil
#73 Andreas Peter 6 Baker Hughes Holdings
#74 Austin Johnson 6 Ameriforge Group
#75 Bandar S. Al-Malki 6 Saudi Arabian Oil
#76 Baris Guner 6 Halliburton Energy Services
#77 Chad Lawman 6 National Service Alliance—Houston
#78 Christopher Brian Sokolove 6 Hunting Titan
#79 David Kubricht 6 National Service Alliance—Houston
#80 Daniel Joshua Stark 6 Halliburton Energy Services
#81 David Todd 6 National Service Alliance—Houston
#82 Etienne M. Samson 6 Halliburton Energy Services
#83 Jay Paul Deville 6 Halliburton Energy Services
#84 Jeffrey Pollack 6 National Service Alliance—Houston
#85 John J. Crosetto 6 National Service Alliance—Houston
#86 John Fischer 6 National Service Alliance—Houston
#87 John T. Hardesty 6 Geodynamics
#88 Kjetil Naesgaard 6 Canrig Robotic Technologies As
#89 Larry DeLynn Chambers 6 Halliburton Energy Services
#90 Leslie David Jarvis 6 Metrol Technology Limited
#91 Mark Andreychuk 6 Kobold
#92 Nicholas J. Cannon 6 Downing Wellhead Equipment
#93 Ossama R. Sehsah 6 Saudi Arabian Oil
#94 Per Angman 6 Tescom
#95 Qadir Looni 6 Saudi Arabian Oil
#96 Qingyun Di 6 Institute Of Geology And Geophysics, Chinese Academy Of Sciences
#97 Richard Cheatham 6 National Service Alliance—Houston
#98 Ronnie B. Beason 6 Downing Wellhead Equipment
#99 Tyler Nolen 6 National Service Alliance—Houston
#100 Ubong Inyang 6 Halliburton Energy Services

Top Companies

Rank ↑ Company ↕ Patents ↕
1 Halliburton Energy Services 535
2 Saudi Arabian Oil 296
3 Schlumberger Technology 147
#4 Baker Hughes Oilfield Operations 102
#5 Weatherford Technology Holdings 51
#6 Baker Hughes Holdings 50
#7 ExxonMobil 27
#8 Phillips Petroleum 25
#9 Bj Energy Solutions 23
#10 Landmark Graphics 23
#11 Fmc 19
#12 Hunting Titan 19
#13 Southwest Petroleum University 19
#14 Unknown 18
#15 Cameron International 17
#16 Dynaenergetics Europe Gmbh 17
#17 Nabors Drilling Technologies Usa 17
#18 National Oilwell Varco 16
#19 Chevron 16
#20 Caterpillar 15
#21 Equinor Energy As 13
#22 China University Of Mining And Technology 12
#23 Canrig Robotic Technologies As 11
#24 Institute Of Geology And Geophysics, Chinese Academy Of Sciences 11
#25 Geodynamics 10
#26 The Charles Machine Works 10
#27 Thru Tubing Solutions 10
#28 Joy Global Underground Mining 9
#29 Tracto-Technik Gmbh & Co., Kg 9
#30 Ameriforge Group 8
#31 China University Of Petroleum (East China) 8
#32 Dril-Quip 8
#33 Innovex Downhole Solutions 8
#34 Bisn Tec 7
#35 Bp Corporation North America 7
#36 Cnpc Usa 7
#37 Flowco Production Solutions 7
#38 KFUPM 7
#39 Ncs Multistage 7
#40 Onesubsea Ip Uk Limited 7
#41 Pruitt Tool & Supply 7
#42 Vallourec Oil And Gas France 7
#43 Vertice Oil Tools 7
#44 Welltec Oilfield Solutions Ag 7
#45 Ads Services 6
#46 Ardyne Holdings, Limited 6
#47 China Petroleum & Chemical 6
#48 China University Of Mining And Technology-Beijing 6
#49 Downing Wellhead Equipment 6
#50 Exacta-Frac Energy Services 6
#51 Metrol Technology Limited 6
#52 National Service Alliance—Houston 6
#53 Noetic Technologies 6
#54 Spm Oil & Gas 6
#55 Swellfix Uk Limited 6
#56 Upwing Energy 6
#57 Welltec A/S 6
#58 Expro North Sea Limited 5
#59 Hunan University Of Science And Technology 5
#60 Kobold 5
#61 Maersk Drilling A/S 5
#62 Merlin Technology 5
#63 National Oilwell Varco Norway As 5
#64 Petrochina Company Limited 5
#65 Sanvean Technologies 5
#66 Sc Asset 5
#67 Shandong University Of Science And Technology 5
#68 Silverwell Technology Limited 5
#69 Spex Corporate Holdings Limited 5
#70 Tco Group As 5
#71 Us Synthetic 5
#72 U.S. Well Services 5
#73 Workover Solutions 5
#74 Yantai Jereh Petroleum Equipment & Technologies Co. 5
#75 Bench Tree Group 4
#76 Black Diamond Oilfield Rentals 4
#77 Bp Exploration Operating Company Limited 4
#78 Downhole Products Limited 4
#79 Epiroc Rock Drills Aktiebolag 4
#80 Forum Us 4
#81 Frank'S International 4
#82 Globaltech Corporation Pty 4
#83 Helmerich & Payne Technologies 4
#84 Hydril 4
#85 Hydril Usa Distribution 4
#86 Interwell Norway As 4
#87 Magnetic Variation Services 4
#88 Mako Rentals 4
#89 National Technology & Engineering Solutions Of Sandia 4
#90 Nippon Steel 4
#91 Ntdrill Holdings 4
#92 Petróleo Brasileiro S.A.—Petrobras 4
#93 Petroleum Technology Company As 4
#94 Sandvik Mining And Construction Oy 4
#95 The Sollami 4
#96 Typhon Technology Solutions (U.S.) 4
#97 Ulterra Drilling Technologies 4
#98 Variperm Energy Services 4
#99 Vault Pressure Control 4
#100 Vetco Gray Scandinavia As 4