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Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Technologies › Earth drilling and mining

Earth drilling and mining Patent Leaders in 2018 2018

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 29 Halliburton Energy Services
2 Aaron W. Logan 26 Evolution Engineering
3 Dennis P. Nguyen 21 Cameron International
#4 David A. Switzer 20 Evolution Engineering
#5 Burkay Donderici 17 Halliburton Energy Services
#6 Justin C. Logan 17 Evolution Engineering
#7 Randy C. Tolman 17 ExxonMobil
#8 Zachary Ryan Murphree 17 Halliburton Energy Services
#9 Patrick R. Derkacz 13 Evolution Engineering
#10 Roger L. Schultz 13 Thru Tubing Solutions
#11 William Mark Richards 13 Halliburton Energy Services
#12 James Dan Vick, Jr. 11 Halliburton Energy Services
#13 Michael T. Pelletier 11 Halliburton Energy Services
#14 Richard Thomas Hay 11 Halliburton Energy Services
#15 Stephen Michael Greci 11 Halliburton Energy Services
#16 Zachary William Walton 11 Halliburton Energy Services
#17 Daniel Jon Themig 10 Packers Plus Energy Service
#18 Hsu-Hsiang Wu 10 Halliburton Energy Services
#19 Kirk P. Guidry 10 Cameron International
#20 Danny E. Scott 9 Baker Hughes Holdings
#21 D. V. Satyanarayana Gupta 9 —
#22 Jason A. Allen 9 —
#23 Philip D. Nguyen 9 Halliburton Energy Services
#24 Scott G. Nelson 9 —
#25 Shilin Chen 9 Halliburton Energy Services
#26 Brock Watson 8 Thru Tubing Solutions
#27 Chaitanya K. Vempati 8 Baker Hughes Holdings
#28 Daniel George Purkis 8 Petrowell Limited
#29 Jean-Marc Lopez 8 Halliburton Energy Services
#30 Michael H. Johnson 8 Baker Hughes Holdings
#31 Michael C. Romer 8 ExxonMobil
#32 Thomas F. Bailey 8 Weatherford/Lamb
#33 Thomas Jules Frosell 8 Halliburton Energy Services
#34 Timothy I. Morrow 8 ExxonMobil
#35 YingQing Xu 8 —
#36 Anthony A. DiGiovanni 7 Baker Hughes Holdings
#37 Andy Ferguson 7 Thru Tubing Solutions
#38 Don Getzlaf 7 Ncs Multistage
#39 Harold Dean Brannon 7 Baker Hughes Holdings
#40 James W. Chambers 7 Weatherford Technology Holdings
#41 Jason D. Dykstra 7 Halliburton Energy Services
#42 Jason M. Harper 7 —
#43 Jili Liu 7 Evolution Engineering
#44 John Ravensbergen 7 Ncs Multistage
#45 Jørgen Hallundbæk 7 Welltec A/S
#46 Junichi Sugiura 7 Schlumberger Technology
#47 Phillip Sollami 7 The Sollami
#48 Rafael Adolfo Lastra 7 Saudi Arabian Oil
#49 Robert S. O'Brien 7 Baker Hughes Holdings
#50 Shaohua Kevin Zhou 7 Siemens Healthcare Limited
#51 Suresh G. Patel 7 Baker Hughes Holdings
#52 Christopher Magnuson 6 Nabors Drilling Technologies Usa
#53 Duke VanLue 6 Downhole Technology
#54 Garrett S. Boyd 6 Flowco Production Solutions
#55 Gunther HH von Gynz-Rekowski 6 Workover Solutions
#56 James G. King 6 Baker Hughes Holdings
#57 Jili Liu 6 —
#58 John T. Hardesty 6 Geodynamics
#59 Joe Noske 6 Weatherford Technology Holdings
#60 John P. Rodgers 6 Halliburton Energy Services
#61 Lev Ring 6 Shell Oil Compny
#62 Mathew Dennis Rowe 6 Halliburton Energy Services
#63 Reed W. Spencer 6 Baker Hughes Holdings
#64 Robert P. Freese 6 Halliburton Energy Services
#65 Simon J. Harrall 6 Weatherford/Lamb
#66 Steven R. Radford 6 Baker Hughes Holdings
#67 Steve Rosenblatt 6 Baker Hughes Holdings
#68 Thomas G. Hill, Jr. 6 Tejas Research & Engineering
#69 Timothy G. Benish 6 ExxonMobil
#70 Andrew Jaffrey 5 Cameron International
#71 Bhargav Gajji 5 Halliburton Energy Services
#72 B. Raghava Reddy 5 Saudi Arabian Oil
#73 Bo Yu 5 Schlumberger Technology
#74 Bruno Lecerf 5 Schlumberger Technology
#75 Christopher L. Drenth 5 Longyear Tm
#76 David R. Hall 5 Hall Labs
#77 Derek H. Willman 5 —
#78 Diederick Bernardus Wijning 5 Itrec B.V.
#79 Edward George Parkin 5 Schlumberger Technology
#80 Edward T. Wood 5 Baker Hughes Holdings
#81 Eric C. Sullivan 5 Baker Hughes Holdings
#82 Evan Lloyd Davies 5 The Wellboss Company
#83 Garrett T. Olsen 5 Halliburton Energy Services
#84 Gary E. Weaver 5 Halliburton Energy Services
#85 G. Leon Starnes 5 Tejas Tubular Products
#86 Gregory L. Hern 5 Baker Hughes Holdings
#87 Ian Mitchell 5 Halliburton Energy Services
#88 Jan-Jette Blangé 5 Shell Oil Compny
#89 Jack Gammill Clemens 5 Halliburton Energy Services
#90 James S. Sanchez 5 —
#91 Jan Veit 5 Halliburton Energy Services
#92 Jimmie R. Williamson, Jr. 5 Halliburton Energy Services
#93 Joop Roodenburg 5 Itrec B.V.
#94 Juan Miguel Bilen 5 Baker Hughes Holdings
#95 Juan Carlos Flores 5 —
#96 Karsten Heidecke 5 Weatherford Technology Holdings
#97 Kelly D. Ireland 5 Baker Hughes Holdings
#98 Kennedy J. Kirkhope 5 Halliburton Energy Services
#99 Keith H. Lawson 5 —
#100 Matthew Manning 5 Weatherford Technology Holdings

Top Companies

Rank ↑ Company ↕ Patents ↕
1 Halliburton Energy Services 421
2 Baker Hughes Holdings 272
3 Schlumberger Technology 147
#4 Weatherford Technology Holdings 110
#5 Cameron International 86
#6 Saudi Arabian Oil 56
#7 ExxonMobil 43
#8 Smith International 32
#9 Evolution Engineering 27
#10 GE 25
#11 Shell Oil Compny 22
#12 Chevron 21
#13 Landmark Graphics 20
#14 National Oilwell Varco 20
#15 Onesubsea Ip Uk Limited 19
#16 Phillips Petroleum 17
#17 Nabors Drilling Technologies Usa 16
#18 Thru Tubing Solutions 14
#19 M-I L.L.C. 12
#20 Us Synthetic 12
#21 Statoil Petroleum As 11
#22 Vetco Gray 11
#23 Welltec A/S 11
#24 Caterpillar 11
#25 Unknown 10
#26 Forum Us 9
#27 Joy Global Underground Mining 9
#28 Nov Downhole Eurasia Limited 9
#29 China University Of Mining And Technology 8
#30 Geodynamics 8
#31 Harris 8
#32 Ncs Multistage 8
#33 Aker Solutions As 7
#34 Epiroc Rock Drills Aktiebolag 7
#35 Frank'S International 7
#36 KFUPM 7
#37 Scientific Drilling International 7
#38 The Sollami 7
#39 Ashmin Holding 6
#40 Downhole Technology 6
#41 Dril-Quip 6
#42 Ensco International Incorporated 6
#43 Flowco Production Solutions 6
#44 Longyear Tm 6
#45 Sandvik Intellectual Property Ab 6
#46 Sandvik Mining And Construction Oy 6
#47 Tejas Research & Engineering 6
#48 Bisn Tec 5
#49 Fmc 5
#50 Itrec B.V. 5
#51 Joy Mm Delaware 5
#52 Klx Energy Services 5
#53 Kureha 5
#54 Maersk Olie Og Gas A/S 5
#55 Nabors Industries 5
#56 Packers Plus Energy Service 5
#57 Tejas Tubular Products 5
#58 Veolia Water Technologies 5
#59 Aps Technology 4
#60 Axon Pressure Products 4
#61 Bly Ip 4
#62 Dover Bmcs Acquisition 4
#63 Dreco Energy Services Ulc 4
#64 Drillmec S.P.A. 4
#65 Fci Holdings Delaware 4
#66 Herrenknecht Aktiengesellschaft 4
#67 Impact Selector International 4
#68 Innovex Downhole Solutions 4
#69 Oceaneering International 4
#70 Q.E.D. Environmental Systems 4
#71 Resman As 4
#72 Saltel Industries 4
#73 Siemens Aktiengesellschaft 4
#74 Superior Energy Services 4
#75 Team Oil Tools, Lp 4
#76 University Of Texas System 4
#77 The Charles Machine Works 4
#78 Total Sa 4
#79 Tracto-Technik Gmbh & Co., Kg 4
#80 U.S. Well Services 4
#81 Vallourec Oil And Gas France 4
#82 Abrado 3
#83 Adler Hot Oil Service 3
#84 Ameriforge Group 3
#85 Applied Technologies Associates 3
#86 Bitswave 3
#87 Bp Exploration Operating Company Limited 3
#88 Center Rock 3
#89 Element Six Limited 3
#90 Eni S.P.A. 3
#91 Epiroc Drilling Tools Aktiebolag 3
#92 Expro North Sea Limited 3
#93 Fhe Usa 3
#94 Foro Energy 3
#95 Gas Technology Institute 3
#96 Halliburton Manufacturing And Services Limited 3
#97 Hunt Energy Enterprises, L.L.C. 3
#98 Husky Oil Operations Limited 3
#99 Hydril Usa Distribution 3
#100 Impact Technology Systems As 3