Heat exchange Patent Leaders 2025

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	Jianlong Jiang	5	Sanhua (Hangzhou) Micro Channel Heat Exchanger Co.
2	Nobuhide Hara	5	Mitsubishi Electric
3	Tsuneo Endo	5	Honda Motor Co.
#4	Yoji ONAKA	5	Mitsubishi Electric
#5	Yuta KUROSAWA	5	Honda Motor Co.
#6	Achim Gotterbarm	4	Wieland-Werke Ag
#7	Hiroyuki Nakaharai	4	Mitsubishi Electric
#8	James F. Wiedenhoefer	4	RTX (Raytheon)
#9	Kathryn L. Kirsch	4	Hamilton Sundstrand
#10	Kotaro Oka	4	Fujitsu General Limited
#11	Koichi Tanimoto	4	Mitsubishi Electric
#12	Qiang Gao	4	Sanhua (Hangzhou) Micro Channel Heat Exchanger Co.
#13	Shunsaku Eguchi	4	Mitsubishi Electric
#14	Shohei NAKATA	4	Fujitsu General Limited
#15	Takuo Oda	4	Mitsubishi Electric
#16	Yoshinari MAEMA	4	Fujitsu General Limited
#17	Daniel Jason Erno	3	GE
#18	Dawid Szostek	3	Valeo Autosystemy Sp. Z O.O.
#19	Gottfried Duerr	3	Mahle International Gmbh
#20	Guanjun WANG	3	Zhejiang Dunan Artificial Environment Co.
#21	Jen-Chih Cheng	3	Cooler Master Co.
#22	Jean-Pierre Libert	3	Evapco
#23	Ji Hun Han	3	Hanon Systems
#24	Masaya Hatanaka	3	Mitsubishi Electric
#25	Martin Sievers	3	Mahle International Gmbh
#26	Masahiro Suemitsu	3	Osaka Gas Co.
#27	Michal Belzowski	3	Valeo Autosystemy Sp. Z O.O.
#28	Peter Konowalczyk	3	Octopus Energy Heating Limited
#29	Robert H. Dold	3	Hamilton Sundstrand
#30	Ryan Enright	3	MIT
#31	Ryan John Lewis	3	Kelvin Thermal Technologies
#32	Shota Chatani	3	Denso
#33	Sheng-Huang Lin	3	Asia Vital Components Co.
#34	Sung Hong SHIN	3	Hanon Systems
#35	Tomohiko Nakamura	3	Denso
#36	Yoshihiro Machida	3	Shinko Electric Industries Co.
#37	Yoichi Uefuji	3	Mitsubishi Electric
#38	Alexander Poltorak	2	Fractal Heatsink Technologies
#39	Alexander Schechner	2	—
#40	Balaji Hosadurgam Ravindranath	2	Transportation Ip Holdings
#41	Byron C. Owens	2	Vesture
#42	Cédric De Vaulx	2	Valeo Systemes Thermiques
#43	Chih-Peng Chen	2	Asia Vital Components Co.
#44	Cheng-Wen Hsieh	2	Acer Incorporated
#45	Cody R. Montoya	2	Stoneage
#46	Cyrille GRIMAUD	2	CEA
#47	Elmar Grussmann	2	Benteler Automobiltechnik Gmbh
#48	Ergang DING	2	Zhejiang Dunan Artificial Environment Co.
#49	Gerhard IHLE	2	—
#50	Guenter FORTMEIER	2	Benteler Automobiltechnik Gmbh
#51	Harald Gaibler	2	Wieland-Werke Ag
#52	Hai Huang	2	Unknown
#53	Haobo Jiang	2	Hangzhou Sanhua Research Institute Co.
#54	Hajime Sotokawa	2	Mitsubishi Electric
#55	Helge Nielsen	2	Danfoss A/S
#56	Hirofumi Aoki	2	Nec
#57	Hiroshi Hamada	2	Sharp Kabushiki Kaisha
#58	Hideo Iizuka	2	Toyota
#59	Hubert Siudzinski	2	Hamilton Sundstrand
#60	Ichio Kamei	2	Denso
#61	Isao Tamada	2	Denso
#62	Jau-Han Ke	2	Acer Incorporated
#63	James Streeter	2	Hamilton Sundstrand
#64	Jeungku CHOI	2	Samsung
#65	Jeffrey Douglas Rambo	2	GE
#66	Jens Romlund	2	Alfa Laval Corporate Ab
#67	Joseph A. Schneider	2	Stoneage
#68	Joseph Turney	2	Hamilton Sundstrand
#69	John Andrew Weems	2	USAA
#70	Julien Tissot	2	Valeo Systemes Thermiques
#71	Kamel Azzouz	2	Valeo Systemes Thermiques
#72	Kevin Mercer	2	Carrier
#73	Kenji Wada	2	Fujifilm
#74	Kenji Yamashita	2	Adeka
#75	Laurens Daniël VAN VLIET	2	Nederlandse Organisatie Voor Toegepast-Natuurwetenschappelijk Onderzoek Tno
#76	Lei Liu	2	Foxconn
#77	Leon Sanders	2	—
#78	Linjie Huang	2	Hangzhou Sanhua Research Institute Co.
#79	Louane GRIMAUD	2	CEA
#80	Masakazu Enomura	2	M. Technique Co.
#81	Masaya Kasai	2	Daikin Industries
#82	Manfred Knab	2	Wieland-Werke Ag
#83	Mateusz Lipowski	2	Valeo Systemes Thermiques
#84	Martin Mohana	2	Nederlandse Organisatie Voor Toegepast-Natuurwetenschappelijk Onderzoek Tno
#85	Masashi Nakamura	2	Mitsubishi Electric
#86	Mateusz Nawrocki	2	Valeo Autosystemy Sp. Z O.O.
#87	Milosz Augustyn	2	Valeo Autosystemy Sp. Z O.O.
#88	Michael A. Disori	2	RTX (Raytheon)
#89	Michael Scheuss	2	Wieland-Werke Ag
#90	Naoki Chiku	2	Mitsubishi Electric
#91	Nikolaj BITTNER	2	Mahle International Gmbh
#92	Nicolas Kristopher Sabo	2	GE
#93	Pavol Bodis	2	Nederlandse Organisatie Voor Toegepast-Natuurwetenschappelijk Onderzoek Tno
#94	Philipp Hofmann	2	BMW
#95	Prabhu Sathyamurthy	2	Frore Systems
#96	Qian Gao	2	Bedford Systems
#97	Raffaele Luca Amalfi	2	Nokia Technologies Oy
#98	Rami M. Saeed	2	Phasestor
#99	Reyad I. Sawafta	2	Phase Change Energy Solutions
#100	Reima Viinikkala	2	Vahterus Oy

Top Companies

Rank ↑	Company ↕	Patents ↕
1	Mitsubishi Electric	15
2	RTX (Raytheon)	11
3	Hamilton Sundstrand	10
#4	Denso	9
#5	Hanon Systems	8
#6	GE	8
#7	Mahle International Gmbh	7
#8	Alfa Laval Corporate Ab	6
#9	Daikin Industries	6
#10	Asia Vital Components Co.	5
#11	Cooler Master Co.	5
#12	Sanhua (Hangzhou) Micro Channel Heat Exchanger Co.	5
#13	Valeo Autosystemy Sp. Z O.O.	5
#14	Valeo Systemes Thermiques	5
#15	Fujitsu General Limited	4
#16	Furukawa Electric Co.	4
#17	Hangzhou Sanhua Research Institute Co.	4
#18	Honda Motor Co.	4
#19	Zhejiang Dunan Artificial Environment Co.	4
#20	Toyota	4
#21	BMW	3
#22	Delta Electronics	3
#23	Evapco	3
#24	L'Air Liquide, Societe Anonyme Pour L'Etude Et L'Exploitation Des Procedes Georges Claude	3
#25	Lenovo (Beijing) Limited	3
#26	MIT	3
#27	Stoneage	3
#28	Tyco Fire & Security Gmbh	3
#29	Uacj	3
#30	Vahterus Oy	3
#31	Wieland-Werke Ag	3
#32	Zhejiang Sanhua Automotive Components Co.	3
#33	Intel	3
#34	Samsung	3
#35	Applied Materials	2
#36	Acer Incorporated	2
#37	Baltimore Aircoil Company	2
#38	Denso International America	2
#39	Fractal Heatsink Technologies	2
#40	Frore Systems	2
#41	Goodman Manufacturing Company	2
#42	Jentech Precision Industrial Co.	2
#43	M. Technique Co.	2
#44	Nederlandse Organisatie Voor Toegepast-Natuurwetenschappelijk Onderzoek Tno	2
#45	Nokia Technologies Oy	2
#46	Octopus Energy Heating Limited	2
#47	Osaka Gas Co.	2
#48	Phasestor	2
#49	Rheem Manufacturing	2
#50	Saudi Arabian Oil	2
#51	Shinko Electric Industries Co.	2
#52	T.Rad Co.	2
#53	Transportation Ip Holdings	2
#54	Unknown	2
#55	Vast Glory Electronics & Hardware & Plastic (Hui Zhou)	2
#56	General Motors	2
#57	LG	2
#58	Aavid Thermal	1
#59	Abb Schweiz Ag	1
#60	Acleap Power	1
#61	Advanced Cooling Technologies	1
#62	Aic	1
#63	Alfa Laval Vicarb Sas	1
#64	American Air Liquide	1
#65	Amulaire Thermal Technology	1
#66	Analog Devices	1
#67	Apr Technologies Ab	1
#68	Arkema	1
#69	Asia Vital Components (China) Co.	1
#70	Atlas Copco Airpower, Naamloze Vennootschap	1
#71	Bae Systems Plc	1
#72	Baidu Usa	1
#73	B/E Aerospace	1
#74	Beam Global	1
#75	Biotherm Hydronic	1
#76	Bitzer Kühlmaschinenbau Gmbh	1
#77	Blue Origin Manufacturing	1
#78	Michigan State University	1
#79	Borsig Gmbh	1
#80	Brentwood Industries	1
#81	Brother Kogyo	1
#82	Bsh Hausgeräte Gmbh	1
#83	Canaan Creative Co.	1
#84	Carrier	1
#85	Celsia Technologies Taiwan	1
#86	Central South University	1
#87	Ci Systems (Israel)	1
#88	Ckd	1
#89	CEA	1
#90	Commonwealth Scientific And Industrial Research Organisation	1
#91	Controls Southeast	1
#92	Coolit Systems	1
#93	Dai Nippon Printing Co.	1
#94	Dalian University Of Technology	1
#95	Dana Canada	1
#96	Danfoss A/S	1
#97	Dongwoo Hst Co.	1
#98	Duke University	1
#99	Eberspächer Catem Gmbh &	1
#100	Ecolab Usa	1

Heat exchange Patent Leaders in 2025 2025

Patents per Year

Top Inventors

Top Companies