Hydraulic and foundation engineering Patent Leaders 2020

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: 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025

Patents per Year

Top Inventors

Rank ↑	Inventor ↕	Patents ↕	Primary Company ↕
1	Yuji Fukuda	12	Kubota
2	Kouji Ishikawa	11	Hitachi Construction Machinery Co.
3	Shinya Imura	8	Hitachi Construction Machinery Co.
#4	Christopher M. Carpenter	7	Esco Group
#5	Hiroshi Sakamoto	7	Hitachi
#6	Keigo Honda	7	Kubota
#7	Hidekazu Moriki	6	Hitachi Construction Machinery Co.
#8	Jason W. Betournay	6	Esco Group
#9	Javier Lander	6	Esco Group
#10	Karsten D. Zuendel	6	Esco Group
#11	Steven D. Hyde	6	Esco Group
#12	Kazuhiro Hashimoto	5	Komatsu
#13	Kord J. Wissmann	5	Geopier Foundation Company
#14	Mo Wei	5	Caterpillar
#15	Seiji Hijikata	5	Hitachi Construction Machinery Co.
#16	Shiho Izumi	5	Hitachi Construction Machinery Co.
#17	Thomas Marshall Congdon	5	Caterpillar
#18	Yuki Shimano	5	Komatsu
#19	Aaron R. Kenkel	4	John Deere
#20	David J. Myers	4	W.L. Gore & Associates Gmbh
#21	Daniel Perpezat	4	Soletanche Freyssinet
#22	Eric L. Bewley	4	Esco Group
#23	Hideki Tsuji	4	Komatsu
#24	Isai Diaz	4	Hensley Industries
#25	Joseph E. Blomberg	4	Esco Group
#26	Kota Beppu	4	Komatsu
#27	Lance R. Sherlock	4	John Deere
#28	Mohamad Youssef Bilal	4	Hensley Industries
#29	Noah D. Cowgill	4	Esco Group
#30	Régis Bernasinski	4	Soletanche Freyssinet
#31	Richard Nicoson	4	Joy Global Surface Mining
#32	Takeya IZUMIKAWA	4	Sumitomo Construction Machinery Co.
#33	Yasutaka Tsuruga	4	Hitachi Construction Machinery Co.
#34	Akihiro Kondo	3	Kawasaki
#35	Benjamin Matlock	3	Innogy Se
#36	Bruce Raymond Vahling	3	Caterpillar
#37	Chunyan Ji	3	BOE
#38	Daniel Chapa	3	John Deere
#39	David Bruno Parzynski, Jr.	3	Caterpillar
#40	Daniel Urban	3	Cciip
#41	Doug M. Lehmann	3	John Deere
#42	Edward Wagner	3	Guangxi Liugong Machinery Co.
#43	Hector Portillo	3	John Deere
#44	Hideyasu Muraoka	3	Kawasaki
#45	Hiromasa Takahashi	3	Hitachi
#46	Hiroyuki Tsukamoto	3	Sumitomo Construction Machinery Co.
#47	Isamu Aoki	3	Hitachi Construction Machinery Co.
#48	Israel Priego	3	John Deere
#49	Jed Christopher Friesen	3	Predl Systems North America
#50	Jianting Guo	3	Jiangsu University Of Science And Technology
#51	Junichi Okada	3	Sumitomo Heavy Industries
#52	Jun Tomita	3	Kubota
#53	Kenji Hiraku	3	Hitachi Construction Machinery Co.
#54	Kenji Ohiwa	3	Komatsu
#55	Kenjiro Shimada	3	Komatsu
#56	Koji Hyodo	3	Hitachi Construction Machinery Co.
#57	Kouichi Shibata	3	Hitachi Construction Machinery Co.
#58	Laurent Pivert	3	Soletanche Freyssinet
#59	Masanori Ikari	3	Komatsu
#60	Masaaki Imaizumi	3	Komatsu
#61	Michael G. Kean	3	John Deere
#62	Mohamad S. El-Zein	3	John Deere
#63	Nathan Bjerke	3	Caterpillar
#64	Nicholas R. Voelz	3	Joy Global Surface Mining
#65	Robert Stewart Boyd	3	Kubota
#66	Ronald W. Chilton	3	National Trench Safety
#67	Ryuu Narikawa	3	Hitachi Construction Machinery Co.
#68	Sara Cascarino	3	Soletanche Freyssinet
#69	Sanjeev M. Hallale	3	John Deere
#70	Shinji Nishikawa	3	Hitachi Construction Machinery Co.
#71	Takuya SONODA	3	Komatsu
#72	Timothy Michael Kemp	3	Hubbell Incorporated
#73	Toru Matsuyama	3	Seiko Epson
#74	Yuto Fujii	3	Komatsu
#75	Yuya Konishi	3	Kubota
#76	Yunfeng Zhao	3	Guangxi Liugong Machinery Co.
#77	Aaron D. Smith	2	Mtd Products
#78	Adnan Gabela	2	Combi Wear Parts Ab
#79	Adrianus Josephus Petrus Marie Koevoets	2	Ihc Holland Ie B.V.
#80	Adam Zell	2	John Deere
#81	Ahmed Phuly	2	—
#82	Ahmet Tuncan	2	Anadolu Universitesi Rektorlugu
#83	Akifumi Inamaru	2	Komatsu
#84	Andrew Xiao Liang	2	Built Robotics
#85	Angelo J. Pino, Jr.	2	Cciip
#86	Arne Stecher	2	Holcim Technology
#87	Bahman Niroumand	2	—
#88	Benjamin G. Stroyer	2	—
#89	Brett S. Graham	2	John Deere
#90	Bryan Rausch	2	John Deere
#91	Burak Evirgen	2	Anadolu Universitesi Rektorlugu
#92	Byunghee Nam	2	Dong-A University Research Foundation For Industry-Academy Cooperation
#93	Caixia Wang	2	Unknown
#94	Christian Cornillie	2	—
#95	Charles Hensley	2	Zicam
#96	Choon-shik Joo	2	Doosan Infracore Co.
#97	Charles Robert Maybury, JR.	2	Mclaughlin Group
#98	Christopher A. Padilla	2	Caterpillar
#99	Christian Schuldt	2	Holcim Technology
#100	Christian John Wawrzonek	2	Built Robotics

Top Companies

Rank ↑	Company ↕	Patents ↕
1	Caterpillar	63
2	Komatsu	49
3	Hitachi Construction Machinery Co.	46
#4	John Deere	33
#5	Kubota	20
#6	Cnh Industrial America	13
#7	Esco Group	13
#8	Joy Global Surface Mining	10
#9	Unknown	10
#10	Sumitomo Construction Machinery Co.	9
#11	Doosan Infracore Co.	8
#12	Ihc Holland Ie B.V.	7
#13	Kobelco Construction Machinery Co.	7
#14	Clark Equipment	6
#15	Soletanche Freyssinet	6
#16	Sumitomo Heavy Industries	6
#17	Volvo Construction Equipment Ab	6
#18	Guangxi Liugong Machinery Co.	5
#19	Hensley Industries	5
#20	Innogy Se	4
#21	J. C. Bamford Excavators Limited	4
#22	Kawasaki	4
#23	The Charles Machine Works	4
#24	Cciip	3
#25	Climate	3
#26	Geopier Foundation Company	3
#27	Hubbell Incorporated	3
#28	Husqvarna Ab	3
#29	Jiangsu University Of Science And Technology	3
#30	Kobe Steel	3
#31	Liebherr-Werk Nenzing Gmbh	3
#32	National Trench Safety	3
#33	Predl Systems North America	3
#34	Tensar International	3
#35	ExxonMobil	3
#36	Anadolu Universitesi Rektorlugu	2
#37	Aquadation	2
#38	Asset Guard Products	2
#39	Bauer Maschinen Gmbh	2
#40	Bernard Mccartney Limited	2
#41	Built Robotics	2
#42	Cccc Highway Consultants Co.	2
#43	China Institute Of Water Resources And Hydropower Research	2
#44	Combi Wear Parts Ab	2
#45	Dong-A University Research Foundation For Industry-Academy Cooperation	2
#46	Floodbreak L.L.C.	2
#47	Hitachi Construction Machinery Tierra Co.	2
#48	Hitachi Zosen	2
#49	Holcim Technology	2
#50	Keystone Retaining Wall Systems	2
#51	Levee Lock	2
#52	Mclaughlin Group	2
#53	Meccanica Breganzese S.P.A. In Breve Mb S.P.A.	2
#54	Officine Maccaferri S.P.A.	2
#55	Petram Technologies	2
#56	Robert Bosch Gmbh	2
#57	Saudi Arabian Oil	2
#58	Soucy International	2
#59	Terra Sonic International	2
#60	The Toro	2
#61	Vsl International Ag	2
#62	Watershed Geosynthetics	2
#63	Wobben Properties Gmbh	2
#64	Yanmar Holdings Co.	2
#65	Zhejiang University	2
#66	Danaher	2
#67	Abb Power Grids Switzerland Ag	1
#68	Acergy France Sas	1
#69	Ag Focus	1
#70	Airbnb	1
#71	Allu Finland Oy	1
#72	Alma Mater Studiorum—Università Di Bologna	1
#73	Altec Industries	1
#74	American Piledriving Equipment	1
#75	Anchor Wall Systems	1
#76	Arizona State University	1
#77	Asahi Engineering Co.	1
#78	Axenox, Llc.	1
#79	Barjoh Pty	1
#80	Basf Se	1
#81	Bauer Deep Drilling Gmbh	1
#82	Bauer Spezialtiefbau Gmbh	1
#83	Bisso Marine	1
#84	Black & Decker	1
#85	Nevada System Of Higher Education On Behalf Of The Of The University Of Nevada, Reno	1
#86	Btech	1
#87	Cccc First Harbor Engineering Co.	1
#88	CNRS	1
#89	Channell Commercial	1
#90	China Construction Steel Structure Co.	1
#91	China University Of Geosciences	1
#92	Coneqtec	1
#93	Cortex Composites	1
#94	Cpac Systems Ab	1
#95	Cqms Pty	1
#96	Daemo Engineering Co.	1
#97	Deepwater Corrosion Services	1
#98	Designer Direct	1
#99	Diamond Mowers	1
#100	Diversified Products	1

Hydraulic and foundation engineering Patent Leaders in 2020 2020

Patents per Year

Top Inventors

Top Companies