Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Hydraulic and foundation engineering Patent Leaders in 2023 2023

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 Yuji Fukuda 15 Kubota
2 Douglas C. Serrurier 9 Caterpillar
3 Andrew Xiao Liang 8 Built Robotics
#4 Eric T. Sinn 8 Caterpillar
#5 Noah Austen Ready-Campbell 8 Built Robotics
#6 Akihiro Kondo 7 Kawasaki
#7 Thomas Marshall Congdon 7 Caterpillar
#8 Jason Jura 6 Caterpillar
#9 Jun Tomita 6 Kubota
#10 Michael G. Kean 6 John Deere
#11 Ryota HAMAMOTO 6 Kubota
#12 Seiji Saiki 6 Kobelco Construction Machinery Co.
#13 Yoichiro Yamazaki 6 Kobelco Construction Machinery Co.
#14 David Bruno Parzynski, Jr. 5 Caterpillar
#15 Gaurav Jitendra Kikani 5 Built Robotics
#16 Hiroaki Tanaka 5 Denso
#17 Hiroyuki Tsukamoto 5 Sumitomo Construction Machinery Co.
#18 David A. Veasy 4 John Deere
#19 Duqiang Wu 4 Cnh Industrial America
#20 Hisami NAKANO 4 Hitachi Construction Machinery Co.
#21 Hiroshi Sakamoto 4 Hitachi
#22 Hitoshi Sasaki 4 Kobelco Construction Machinery Co.
#23 Jason Carlson 4 Great Plains Manufacturing
#24 Jiguang Wu 4 Beijing Hengxiang Hongye Foundation Reinforcement Technology Co.
#25 Joonhyun Kim 4 Built Robotics
#26 Junji Harada 4 Komatsu
#27 Kenjiro Shimada 4 Komatsu
#28 Nathan Bjerke 4 Caterpillar
#29 Naoki Hata 4 Kawasaki
#30 Seonggeun Yun 4 Volvo Construction Equipment Ab
#31 Shinya Imura 4 Hitachi Construction Machinery Co.
#32 Shinji Nishikawa 4 Hitachi Construction Machinery Co.
#33 Takaaki CHIBA 4 Hitachi Construction Machinery Co.
#34 Taerang Jung 4 Volvo Construction Equipment Ab
#35 Tengyue Cui 4 Beijing Hengxiang Hongye Foundation Reinforcement Technology Co.
#36 Xuedong Cui 4 Beijing Hengxiang Hongye Foundation Reinforcement Technology Co.
#37 Yusuke Sano 4 Sumitomo Heavy Industries
#38 Adam Nackers 3 Caterpillar
#39 Akihiro Narazaki 3 Hitachi Construction Machinery Co.
#40 Charles Almy 3 Ojjo
#41 Christopher M. Carpenter 3 Esco Group
#42 Christian John Wawrzonek 3 Built Robotics
#43 Chunnan Wu 3 Sumitomo Heavy Industries
#44 Chunyi Xiu 3 Ludong University
#45 Corey Lee Gorman 3 Caterpillar
#46 Corey Michael Wells 3 Caterpillar
#47 Craig Christofferson 3 John Deere
#48 Cyrus McMann Ready-Campbell 3 Built Robotics
#49 Danish Ahmed 3 Prince Mohammad Bin Fahd University
#50 David Garcia Corrochano 3 J. C. Bamford Excavators Limited
#51 David J. Myers 3 W.L. Gore & Associates Gmbh
#52 Daijirou Tanaka 3 Komatsu
#53 Edward Stephen Walker, Jr. 3 Built Robotics
#54 Eiji Ishibashi 3 Komatsu
#55 Fuaad Sayeed 3 Caterpillar
#56 Giovanni A. Wuisan 3 John Deere
#57 Hiroaki AMANO 3 Hitachi Construction Machinery Co.
#58 Hideki Nakajima 3 Caterpillar
#59 Jeffrey K. Berry 3 Caterpillar
#60 John M. Relph 3 Great Plains Manufacturing
#61 Jorge Triginer Boixeda 3 Metalogenia Research & Technologies, S.L.
#62 Junichi Okada 3 Sumitomo Heavy Industries
#63 Kazuhiro Hatake 3 Komatsu
#64 Kazuki Kure 3 Komatsu
#65 Kento KUMAGAI 3 Hitachi Construction Machinery Co.
#66 Kiwamu Takahashi 3 Hitachi Construction Machinery Tierra Co.
#67 Kohei NAGAO 3 Kubota
#68 Lance R. Sherlock 3 John Deere
#69 Linus Page Chou 3 Built Robotics
#70 Masanori Aizawa 3 Toyo Seikan Co.
#71 Masanori Minagawa 3 Komatsu
#72 Mihai Mircea Balan 3 Caterpillar
#73 Michael D. Peat 3 John Deere
#74 Monta Kondou 3 Komatsu
#75 Nathaniel K. Harshman 3 Caterpillar
#76 Nobuyuki Kinoshita 3 Kawasaki
#77 Rammagy Yoeu 3 Caterpillar
#78 Riley A. Albers 3 Caterpillar
#79 Rustin Glenn Metzger 3 Caterpillar
#80 Ryota HAMA 3 Kobelco Construction Machinery Co.
#81 Ryu NARIKAWA 3 Hitachi Construction Machinery Co.
#82 Shaun D. Currier 3 Caterpillar
#83 Tatsuo Aira 3 Komatsu
#84 Tahar Ayadat 3 Prince Mohammad Bin Fahd University
#85 Takeshi Ishii 3 Hitachi Construction Machinery Tierra Co.
#86 Takanori Nagata 3 Komatsu
#87 Takashi Nishi 3 Sumitomo Construction Machinery Co.
#88 Takashi Yamamoto 3 Mitsubishi Electric
#89 Thomas L. Kennedy 3 John Deere
#90 Tomoki KONDA 3 Komatsu
#91 Toshihiko Takemura 3 Kubota
#92 Todd F. Velde 3 John Deere
#93 Xueyan Li 3 Ludong University
#94 Yudai Furudate 3 Komatsu
#95 Yusuke Saigo 3 Komatsu
#96 Yukihisa Takaoka 3 Komatsu
#97 Zhi Cheng 3 Shenzhen Futaihong Precision Industry Co.
#98 Aaron R. Kenkel 2 John Deere
#99 Adam M. Dean 2 Caterpillar
#100 Albert Ben Currey 2 —

Top Companies

Rank ↑ Company ↕ Patents ↕
1 Caterpillar 79
2 Komatsu 52
3 John Deere 42
#4 Kubota 21
#5 Hitachi Construction Machinery Co. 20
#6 Volvo Construction Equipment Ab 18
#7 Sumitomo Construction Machinery Co. 16
#8 Cnh Industrial America 13
#9 Kobelco Construction Machinery Co. 12
#10 Sumitomo Heavy Industries 9
#11 Built Robotics 8
#12 Unknown 8
#13 Kawasaki 7
#14 Clark Equipment 6
#15 Doosan Infracore Co. 5
#16 Esco Group 5
#17 Hitachi Construction Machinery Tierra Co. 5
#18 J. C. Bamford Excavators Limited 5
#19 Saudi Arabian Oil 5
#20 Beijing Hengxiang Hongye Foundation Reinforcement Technology Co. 4
#21 Great Plains Manufacturing 4
#22 Joy Global Surface Mining 4
#23 Yanmar Power Technology Co. 4
#24 Zhejiang University 4
#25 Husqvarna Ab 3
#26 Ludong University 3
#27 Ojjo 3
#28 Prince Mohammad Bin Fahd University 3
#29 Qingdao University Of Technology 3
#30 Robert Bosch Gmbh 3
#31 The Charles Machine Works 3
#32 Topcon Positioning Systems 3
#33 Baidu Usa 2
#34 Bauer Spezialtiefbau Gmbh 2
#35 Cccc First Harbor Engineering Co. 2
#36 Cciip 2
#37 Cqms Pty 2
#38 Doosan Bobcat North America 2
#39 Equinor Energy As 2
#40 Hensley Industries 2
#41 Hiroshima University 2
#42 Independence Materials Group 2
#43 Jdc 2
#44 Jiangsu Xcmg Construction Machinery Research Institute 2
#45 Marathon Petroleum Company Lp 2
#46 Metalogenia Research & Technologies, S.L. 2
#47 Nabtesco 2
#48 Parker-Hannifin 2
#49 Quanta Associates 2
#50 Rotech Group Limited 2
#51 Tensar International 2
#52 Terracon Consultants 2
#53 Trimble Navigation Limited 2
#54 US Air Force 2
#55 Wedgelock Equipment Limited 2
#56 Wenzhou University 2
#57 Wuhan Center, China Geological Survey (Central South China Innovation Center For Geosciences) 2
#58 Abi Attachments 1
#59 Afs Newco 1
#60 Agco 1
#61 Ag Focus 1
#62 Aim Intelligent Machines 1
#63 Anchor Wall Systems 1
#64 Aqseptence Group Pty 1
#65 Aquadation 1
#66 Arnold Jäger Holding Gmbh 1
#67 Arrowhead Center 1
#68 Artemis Intelligent Power Limited 1
#69 Asahi Kasei Construction Materials 1
#70 Baidu Online Network Technology (Beijing) Co. 1
#71 Beijing Baidu Netcom Science Technology Co. 1
#72 Bernard Mccartney Limited 1
#73 Bourgault Industries 1
#74 Cashman Dredging And Marine Contracting, Co. 1
#75 CNRS 1
#76 Changsha University Of Science And Technology 1
#77 Changzhou University 1
#78 China Institute Of Water Resources And Hydropower Research 1
#79 China University Of Mining And Technology 1
#80 China University Of Petroleum 1
#81 Climate 1
#82 Cochrane Usa 1
#83 Commonwealth Scientific And Industrial Research Organisation 1
#84 Daikin Industries 1
#85 Dalian University Of Technology 1
#86 Dana Italia S.R.L. 1
#87 Danfoss A/S 1
#88 Danfoss Power Solutions Ii Technology A/S 1
#89 Delta Subsea 1
#90 Demolition And Recycling Equipment B.V. 1
#91 Donaldson Company 1
#92 Dong-A University Research Foundation For Industry-Academy Cooperation 1
#93 Ecole Centrale De Marseille 1
#94 Electronic Power Design 1
#95 Epiroc Rock Drills Aktiebolag 1
#96 Ewald Dörken Ag 1
#97 Exposure Illumination Architects 1
#98 Geophysical Technology 1
#99 Geopier Foundation Company 1
#100 Ghw Solutions 1