Heat exchange Patent Leaders 2024

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	James F. Wiedenhoefer	7	RTX (Raytheon)
2	Kathryn L. Kirsch	6	Hamilton Sundstrand
3	Qiang Gao	6	Sanhua (Hangzhou) Micro Channel Heat Exchanger Co.
#4	Yoshikatsu Inagaki	6	Furukawa Electric Co.
#5	Hirofumi Aoki	5	Nec
#6	Jen-Chih Cheng	5	Cooler Master Co.
#7	Joseph Turney	5	Hamilton Sundstrand
#8	Tobias H. Sienel	5	Carrier
#9	Wenjian Wei	5	Danfoss Micro Channel Heat Exchanger (Jiaxing) Co.
#10	Adam Horoszczak	4	Hamilton Sundstrand
#11	Hanchoon Lee	4	LG
#12	Han-Min Liu	4	Asia Vital Components (China) Co.
#13	Helge Nielsen	4	Danfoss A/S
#14	Jeffrey Douglas Rambo	4	GE
#15	Jianlong Jiang	4	Sanhua (Hangzhou) Micro Channel Heat Exchanger Co.
#16	Lei Liu	4	Foxconn
#17	Nobuhide Hara	4	Mitsubishi Electric
#18	Ram Ranjan	4	Hamilton Sundstrand
#19	Robert H. Dold	4	Hamilton Sundstrand
#20	Sven Andersson	4	Swep International Ab
#21	Tomas Dahlberg	4	Swep International Ab
#22	Wenyong Ma	4	Zhejiang Dunan Artificial Environment Co.
#23	Abbas A. Alahyari	3	Hamilton Sundstrand
#24	Alfred Erhard	3	—
#25	Alexander Poltorak	3	Fractal Heatsink Technologies
#26	Arindom Joardar	3	Carrier
#27	CHING-MING YANG	3	Amulaire Thermal Technology
#28	Derek Sumsion	3	—
#29	Ercan Mehmet Dede	3	Stanford University
#30	Hansjorg Brentrop	3	—
#31	Henrik Stiesdal	3	Siemens Aktiengesellschaft
#32	Hirokazu Fujino	3	Daikin Industries
#33	Hiroyuki Nakaharai	3	Mitsubishi Electric
#34	Jean-Pierre Libert	3	Evapco
#35	Joseph B. Staubach	3	RTX (Raytheon)
#36	Kenya Kawabata	3	Furukawa Electric Co.
#37	Kimberly Rae Saviers	3	Hamilton Sundstrand
#38	Koichi Tanimoto	3	Mitsubishi Electric
#39	Linjie Huang	3	Hangzhou Sanhua Research Institute Co.
#40	Masaya Hatanaka	3	Mitsubishi Electric
#41	Mark Huber	3	Evapco
#42	Paul M. Colson	3	Hamilton Sundstrand
#43	Prabhu Sathyamurthy	3	Frore Systems
#44	Rémi Tournois	3	Valeo Systemes Thermiques
#45	Robert Louis Runk	3	Mahle International Gmbh
#46	Ronggui Yang	3	Kelvin Thermal Technologies
#47	Seshagiri Rao Madhavapeddy	3	Frore Systems
#48	Shunsaku Eguchi	3	Mitsubishi Electric
#49	Shekhar Halakatti	3	Frore Systems
#50	Suryaprakash Ganti	3	Frore Systems
#51	Takuo Oda	3	Mitsubishi Electric
#52	TZE-YANG YEH	3	Amulaire Thermal Technology
#53	William Dwight Gerstler	3	GE
#54	Yoshihiro Machida	3	Shinko Electric Industries Co.
#55	Yoichi Uefuji	3	Mitsubishi Electric
#56	Yung-Cheng Lee	3	Kelvin Thermal Technologies
#57	Aaswath Pattabhi Raman	2	Stanford University
#58	Akira Koizumi	2	Mayekawa Mfg. Co.
#59	Alexandru Cadar	2	Hamilton Sundstrand
#60	Ali CHEHADE	2	Ovh
#61	Allen DeMars	2	Hoffman Enclosures
#62	Alexander HEITBRINK	2	Erwin Quarder Systemtechnik Gmbh
#63	Alan Retersdorf	2	Hamilton Sundstrand
#64	Andrey Petrov	2	Abb Schweiz Ag
#65	Atsushi Endo	2	Tokyo Electron Limited
#66	Berthold Adomat	2	Hyfra Industriekuhlanlagen Gmbh
#67	Ben Hildebrandt	2	Evapco
#68	Bruno Agostini	2	Abb Schweiz Ag
#69	Byron C. Owens	2	Vesture
#70	Cédric De Vaulx	2	Valeo Systemes Thermiques
#71	Chi-Lung Chen	2	Cooler Master Co.
#72	Cheng-Wen Hsieh	2	Acer Incorporated
#73	Chun-Hung Lin	2	TSMC
#74	Chunyu Shao	2	Hangzhou Sanhua Research Institute Co.
#75	Chun-Lung Wu	2	Amulaire Thermal Technology
#76	Chaochao Zhang	2	Stmicroelectronics Asia Pacific Pte
#77	Cong Zhou	2	Foxconn
#78	David Andrew Aaron	2	Baltimore Aircoil Company
#79	Daniele Torresin	2	Abb Schweiz Ag
#80	Dhruv Chanakya Hoysall	2	Carrier
#81	Donald E. Army	2	Hamilton Sundstrand
#82	Donald R. Drolet	2	—
#83	Dongfa Shen	2	China Petroleum & Chemical
#84	Doug Vanderwees	2	Dana Canada
#85	Eden Rephaeli	2	Verily Life Sciences
#86	Edgar Fernando Yajure	2	Tescom
#87	Emmanuel Henon	2	Valeo Systemes Thermiques
#88	Eric Clavelle	2	Nova Chemicals (International) S.A.
#89	Fabien Bireaud	2	Valeo Systemes Thermiques
#90	Feras Eid	2	Intel
#91	Gaiken O	2	Fujitsu General Limited
#92	Gabriel Ruiz	2	Hamilton Sundstrand
#93	George W. Lynch	2	Kelvin Thermal Energy
#94	Georg SIEWERT	2	Erwin Quarder Systemtechnik Gmbh
#95	Grazyna Petela	2	Nova Chemicals (International) S.A.
#96	Guoqing Wang	2	Honeywell
#97	Guanjun WANG	2	Zhejiang Dunan Artificial Environment Co.
#98	Hai Huang	2	Unknown
#99	Han Gil Youn	2	Hanon Systems
#100	Hideaki KAWABATA	2	Kddi

Top Companies

Rank ↑	Company ↕	Patents ↕
1	Hamilton Sundstrand	22
2	Mitsubishi Electric	12
3	RTX (Raytheon)	11
#4	Cooler Master Co.	10
#5	Carrier	9
#6	Mahle International Gmbh	9
#7	Valeo Systemes Thermiques	9
#8	GE	9
#9	Daikin Industries	8
#10	Denso	8
#11	Alfa Laval Corporate Ab	7
#12	Danfoss A/S	7
#13	Furukawa Electric Co.	6
#14	Hanon Systems	6
#15	Sanhua (Hangzhou) Micro Channel Heat Exchanger Co.	6
#16	Asia Vital Components (China) Co.	5
#17	Delta Electronics	5
#18	Evapco	5
#19	Zhejiang Dunan Artificial Environment Co.	5
#20	Samsung	5
#21	Toyota	5
#22	Abb Schweiz Ag	4
#23	Amulaire Thermal Technology	4
#24	Asia Vital Components Co.	4
#25	Baltimore Aircoil Company	4
#26	Hangzhou Sanhua Research Institute Co.	4
#27	L'Air Liquide, Societe Anonyme Pour L'Etude Et L'Exploitation Des Procedes Georges Claude	4
#28	Lennox Industries	4
#29	Nidec	4
#30	Purdue Research Foundation	4
#31	Swep International Ab	4
#32	LG	4
#33	City University Of Hong Kong	3
#34	Fractal Heatsink Technologies	3
#35	Frore Systems	3
#36	Fujitsu General Limited	3
#37	MIT	3
#38	Rheem Manufacturing	3
#39	Shinko Electric Industries Co.	3
#40	Sumitomo Precision Products Co.	3
#41	Vast Glory Electronics & Hardware & Plastic (Hui Zhou)	3
#42	Intel	3
#43	Aavid Thermalloy	2
#44	Acer Incorporated	2
#45	Baidu Usa	2
#46	Brentwood Industries	2
#47	China Petroleum & Chemical	2
#48	Coolit Systems	2
#49	Dana Canada	2
#50	Eagle Industry Co.	2
#51	Erwin Quarder Systemtechnik Gmbh	2
#52	Fujitsu Limited	2
#53	Hoffman Enclosures	2
#54	Honda Motor Co.	2
#55	Hs Marston Aerospace Limited	2
#56	Hyundai Motor	2
#57	Kabushiki Kaisha Toshiba	2
#58	Kawasaki	2
#59	Kelvin Thermal Energy	2
#60	Kelvin Thermal Technologies	2
#61	Khalifa University Of Science And Technology	2
#62	Kia	2
#63	Korea Atomic Energy Research Institute	2
#64	Modine Manufacturing	2
#65	Ngk Insulators	2
#66	Nova Chemicals (International) S.A.	2
#67	Ovh	2
#68	Phasestor	2
#69	Pimems	2
#70	Rolls-Royce North America	2
#71	Shenzhen Apaltek Co.	2
#72	Stoneage	2
#73	Taiwan Microloops	2
#74	Stanford University	2
#75	The Boeing	2
#76	University of Colorado, A Body Corporate	2
#77	Toshiba Materials Co.	2
#78	Triad National Security	2
#79	Tyco Electronics (Shanghai) Co.	2
#80	Tyco Fire & Security Gmbh	2
#81	Unknown	2
#82	Welcon	2
#83	Xi'An Jiaotong University	2
#84	Zhejiang Sanhua Automotive Components Co.	2
#85	Huawei	2
#86	IBM	2
#87	Panasonic	2
#88	Apple	1
#89	Applied Materials	1
#90	Advanced Semiconductor Engineering	1
#91	Advanced Thermal Solutions	1
#92	Aerco International	1
#93	Airbus Operations Sas	1
#94	Airbus (S.A.S.)	1
#95	Air Power Systems Co.	1
#96	Ampaire	1
#97	Antora Energy	1
#98	A. Raymond Et Cie	1
#99	Asetek Danmark A/S	1
#100	Asia Pacific Fuel Cell Technologies	1

Heat exchange Patent Leaders in 2024 2024

Patents per Year

Top Inventors

Top Companies