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Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Technologies › Hydraulic and foundation engineering

Hydraulic and foundation engineering Patent Leaders in 2018 2018

Primary CPC class E02 · 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 913 patents in 2024.peak 9131996: 398 patents19961997: 303 patents1998: 407 patents1999: 447 patents19992000: 429 patents2001: 443 patents2002: 442 patents20022003: 459 patents2004: 388 patents2005: 349 patents20052006: 391 patents2007: 290 patents2008: 293 patents20082009: 345 patents2010: 438 patents2011: 403 patents20112012: 371 patents2013: 530 patents2014: 692 patents20142015: 728 patents2016: 681 patents2017: 735 patents20172018: 678 patents2019: 826 patents2020: 788 patents20202021: 716 patents2022: 741 patents2023: 717 patents20232024: 913 patents2025: 904 patents2025

Top Inventors

Rank ↑ Inventor ↕ Patents ↕ Primary Company ↕
1 Shinya Imura 8 Hitachi Construction Machinery Co.
2 Thomas Marshall Congdon 7 Caterpillar
3 Phillip J. Kunz 6 Caterpillar
#4 Chunnan Wu 5 Sumitomo Heavy Industries
#5 Joseph J. Colwell 5 —
#6 Don M. Buckner 4 Vac-Tron Equipment
#7 Habib Ur-Rehman Ahmed 4 KFUPM
#8 Hiroyuki Tsukamoto 4 Sumitomo Construction Machinery Co.
#9 Kouji Ishikawa 4 Hitachi Construction Machinery Co.
#10 Nathan Bjerke 4 Caterpillar
#11 Sahel Nishat Abduljauwad 4 KFUPM
#12 Tsutomu Iwamura 4 Komatsu
#13 Ahmet Umran Dogan 3 KFUPM
#14 Akinori Ishii 3 Hitachi Construction Machinery Co.
#15 Cody L. Sewell 3 The Charles Machine Works
#16 David Worth 3 Caterpillar
#17 James Robert LaHood 3 Caterpillar
#18 Jin Kitajima 3 Komatsu
#19 Jitsutaka Takeo 3 Sumitomo Construction Machinery Co.
#20 Jorge Triginer Boixeda 3 Metalogenia Research & Technologies, S.L.
#21 Kiwamu Takahashi 3 Hitachi Construction Machinery Tierra Co.
#22 Larry W. Kiest, Jr. 3 Lmk Technologies
#23 Masafumi HITA 3 Hitachi Construction Machinery Co.
#24 Mark N. Howell 3 General Motors
#25 Masashi Ichihara 3 Komatsu
#26 Mariko Mizuochi 3 Hitachi Construction Machinery Co.
#27 Patrick Simon Campomanes 3 Caterpillar
#28 Reece Attwood 3 Bradken Resources Pty Limited
#29 Richard Nicoson 3 Joy Global Surface Mining
#30 Ronald Armstrong 3 —
#31 Samuel Joseph Frei 3 Caterpillar
#32 Seiji Hijikata 3 Hitachi Construction Machinery Co.
#33 Stewart Kriegstein 3 —
#34 Takashi Yokoo 3 Komatsu
#35 Xinyu Ge 3 Caterpillar
#36 Yoshiro Iwasaki 3 Komatsu
#37 Aaron R. Shatters 2 Caterpillar
#38 Albertus Knol 2 Ihc Holland Ie B.V.
#39 Amber C. Boyce 2 Mono Slab Ez Form
#40 Arun Venugopal 2 Caterpillar
#41 Azumi Nomura 2 Komatsu
#42 Bertin Castonguay 2 Oldcastle Building Products Canada
#43 Bo Vigholm 2 Volvo Construction Equipment Ab
#44 Bradley P. Krone 2 Caterpillar
#45 Brant Douglas Kukuk 2 The Charles Machine Works
#46 Brandon G. Strom 2 Subsurface
#47 Brad Robert Van De Veer 2 Caterpillar
#48 Charles G. Ollinger, IV 2 Esco Group
#49 Christopher A. Padilla 2 Caterpillar
#50 Clifford O. Jeske 2 Caterpillar
#51 Colby Barrett 2 R&B Leasing
#52 Cory Ott 2 John Deere
#53 Daiki Arimatsu 2 Komatsu
#54 Daniel A. Jones 2 Progressive Games Partners
#55 Daniel Oliver 2 Oliver Technologies
#56 Daniel Schlegel 2 Case Gmbh
#57 Daniel M. Sulzer 2 John Deere
#58 Doug Serrurier 2 Caterpillar
#59 Douglas C. Serrurier 2 Caterpillar
#60 Doo Sub Sim 2 —
#61 E. John Greeves 2 Versabar
#62 Eric W. Cler 2 Caterpillar
#63 Fernando Benjamin Fischmann Torres 2 Crystal Lagoons (Curacao) B.V.
#64 Gaetano Lombardo 2 —
#65 Gary H. Strom 2 Subsurface
#66 Giedre Simanskaite 2 Caterpillar
#67 Hayato Kawano 2 Kubota
#68 Haruhiko Kawasaki 2 Kayaba Industry Co.
#69 Haifeng Qi 2 Power China Huadong Engineering Corporation Limited
#70 Hea-Gyoon Joung 2 Volvo Construction Equipment Ab
#71 Henricus Gerardus Andreas Van Vessem 2 Ihc Holland Ie B.V.
#72 Hiroaki AMANO 2 Hitachi Construction Machinery Co.
#73 Hiroyuki Anami 2 Kubota
#74 Hideto Magaki 2 Sumitomo Construction Machinery Co.
#75 Hidetoshi Satake 2 Hitachi Construction Machinery Co.
#76 Hiromasa Takahashi 2 Hitachi
#77 Jason Knuth 2 —
#78 James Lee 2 Wws Acquisition
#79 Jan-Erik Lindholm 2 K. Hartwall Oy Ab
#80 James Oliver 2 Oliver Technologies
#81 Jeffrey Graham Fletcher 2 Caterpillar
#82 Jing HOU 2 Power China Huadong Engineering Corporation Limited
#83 Ji Hyun Park 2 Samsung
#84 Joseph Faivre 2 Caterpillar
#85 Joseph Edward Forcash 2 Caterpillar
#86 Joel S. Hankland 2 Esco Group
#87 Jon Khachaturian 2 Versabar
#88 John Oliver 2 Oliver Technologies
#89 Joan Tuto 2 Metalogenia Research & Technologies, S.L.
#90 Junya Kawamoto 2 Hitachi Construction Machinery Co.
#91 Julia Kay Nitti 2 Caterpillar
#92 Justin Petersen 2 R&B Leasing
#93 Kazuyoshi Hanakawa 2 Hitachi Construction Machinery Co.
#94 Kazushige Mori 2 Hitachi Construction Machinery Tierra Co.
#95 Kazuyuki Suzuki 2 Komatsu
#96 Kenji Hiraku 2 Hitachi Construction Machinery Co.
#97 Keigo Kikuchi 2 Kcm
#98 Keisuke Kobayashi 2 Hitachi
#99 Kensuke Sato 2 Hitachi Construction Machinery Co.
#100 Kenny Scott 2 Hesco Bastion Limited

Top Companies

Rank ↑ Company ↕ Patents ↕
1 Caterpillar 88
2 Komatsu 31
3 Hitachi Construction Machinery Co. 24
#4 Kubota 12
#5 Sumitomo Construction Machinery Co. 12
#6 John Deere 12
#7 Ihc Holland Ie B.V. 9
#8 Sumitomo Heavy Industries 9
#9 Cnh Industrial America 8
#10 Kobelco Construction Machinery Co. 8
#11 Unknown 7
#12 Esco Group 6
#13 Harnischfeger 6
#14 Kcm 6
#15 Doosan Infracore Co. 5
#16 Hitachi Construction Machinery Tierra Co. 5
#17 J. C. Bamford Excavators Limited 5
#18 Joy Global Surface Mining 5
#19 Kyb 5
#20 Soletanche Freyssinet 5
#21 Volvo Construction Equipment Ab 5
#22 Bradken Resources Pty Limited 4
#23 Clark Equipment 4
#24 Geopier Foundation Company 4
#25 KFUPM 4
#26 The Charles Machine Works 4
#27 Vac-Tron Equipment 4
#28 Crystal Lagoons (Curacao) B.V. 3
#29 Eaton Intelligent Power Limited 3
#30 Joint-Stock Company “Transneft Siberia” 3
#31 Lmk Technologies 3
#32 Neenah Foundry 3
#33 Public Joint Stock Company “Transneft” 3
#34 American Piledriving Equipment 2
#35 Bomag Gmbh 2
#36 Conwed Plastics Acquisition Company V 2
#37 Hensley Industries 2
#38 Hesco Bastion Limited 2
#39 Hitachi Zosen 2
#40 Hohai University 2
#41 Hubbell Incorporated 2
#42 Keystone Retaining Wall Systems 2
#43 Les Materiaux De Construction Oldcastle Canada 2
#44 Metalogenia Research & Technologies, S.L. 2
#45 Minetec S.A. 2
#46 Mono Slab Ez Form 2
#47 Nabtesco 2
#48 Oliver Technologies 2
#49 Pnd Engineers 2
#50 R&B Leasing 2
#51 Rsa Protective Technologies 2
#52 Subsurface 2
#53 US Army 2
#54 Trimble Navigation Limited 2
#55 Versabar 2
#56 Wacker Nueson Production Americas 2
#57 Comcast 2
#58 Abbott 1
#59 1708828 Ontario 1
#60 Abi Attachments 1
#61 Alstom Renewable Technologies 1
#62 Altec Industries 1
#63 Amcol International 1
#64 American Muscle Docks & Fabrication 1
#65 Ameriglobe 1
#66 Aquadation 1
#67 Asahi Kasei Construction Materials 1
#68 Awt Ip 1
#69 Bauer Maschinen Gmbh 1
#70 Bauer Spezialtiefbau Gmbh 1
#71 Bisso Marine 1
#72 Black Cat Blades 1
#73 Bradley Industrial Textiles 1
#74 Bridgeview Mfg. 1
#75 Bright Technologies 1
#76 Brokk Aktiebolag 1
#77 Btech 1
#78 Bucher Hydraulics S.P.A 1
#79 Cascade 1
#80 Combi Wear Parts Ab 1
#81 Concrete Systems 1
#82 Cornerstone Research Group 1
#83 Delft University Of Technology 1
#84 Designer Direct 1
#85 Dywidag-Systems International Gmbh 1
#86 Earth 1
#87 Eaton 1
#88 Electricite De France 1
#89 Evonik Degussa Gmbh 1
#90 Feng He Ying Zao Group Co. 1
#91 Fike 1
#92 Flanders Electric Motor Service 1
#93 Floodbreak L.L.C. 1
#94 Garland Industries 1
#95 Greenfields B.V. 1
#96 Group14 Technologies 1
#97 Habdank Pv-Montagesysteme Gmbh & Co. Kg 1
#98 Halo Maritime Defense Systems 1
#99 Hatch Pty 1
#100 Hexagon Technology Center Gmbh 1