These Japanese companies are primarily large, established firms in the medical device and related manufacturing sectors. Hitachi, founded in 1910, is a technology and innovation company, while Olympus Corporation, founded in 1919, specializes in medical equipment. Asahi Kasei and Toray Industries, both chemical manufacturers, also contribute to healthcare solutions. Sysmex Corporation is a global leader in in vitro diagnostics, and PHC Holdings Corporation focuses on diabetes management and healthcare solutions.
A notable pattern is the concentration of headquarters in Tokyo, including Hitachi, Asahi Kasei, Canon Inc., PENTAX Medical, and Terumo, indicating a central hub for these large-scale operations. Several companies, such as Olympus Corporation, Canon Inc., HORIBA, and KONICA MINOLTA, INC., were founded between 1919 and 1953, suggesting a strong historical presence and long-standing expertise in their respective fields.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
Hitachihitachi.com
A technology and innovation company committed to creating a more sustainable society through advanced social infrastructure systems and improving quality of life |
40,513 | |||
| 2 |
Olympus Corporationolympus-global.com
A global company dedicated to developing medical solutions to improve lives by detecting, preventing, and treating diseases while ensuring public safety |
13,679 | |||
| 3 |
Asahi Kaseiasahi-kasei.com
Global company providing healthcare products, residential solutions, and advanced materials to improve life quality and support sustainable development worldwide. |
10,369 | |||
| 4 |
Canon Inc.global.canon
Manufacturing and marketing of imaging equipment, printers, cameras, medical systems, and semiconductor manufacturing equipment with global presence and R&D. |
6,597 | |||
| 5 |
Sysmex Corporationsysmex.co.jp
A global leader in in vitro diagnostics, dedicated to innovating personalized medicine and novel treatments to improve healthcare worldwide |
4,045 | |||
| 6 |
HORIBAhoriba.com
The company provides instruments and systems for various industries including automotive, medical diagnostics, semiconductor manufacturing, and scientific research with proven quality and performance |
3,531 | |||
| 7 |
Toray Industries, Inc.toray.com
Development of fibers, textiles, performance chemicals, carbon fiber composites, environment engineering, pharmaceuticals, and medical products using advanced chemical technologies worldwide. |
3,225 | |||
| 8 |
PHC Holdings Corporationphchd.com
Global healthcare company specializing in diabetes management, healthcare solutions, life sciences, and diagnostics with a mission to improve lives worldwide |
2,610 | |||
| 9 |
KONICA MINOLTA, INC.konicaminolta.us
Development manufacturing sales multifunctional peripherals printers healthcare systems measuring instruments electronic materials optical products functional films |
2,344 | |||
| 10 |
Teijin Limitedteijin.com
Innovative global group specializing in materials, healthcare, and IT solutions, focused on environmental value, safety, and health consciousness |
1,882 | |||
| 11 |
SHIMADZU CORPORATIONshimadzu.com
Providing world-class analytical instruments, medical imaging systems, aircraft equipment, and industrial machinery for health, safety, and industry advancement. |
1,858 | |||
| 12 |
Santensanten.com
This specialized company in ophthalmology conducts research, development, marketing, and sales of pharmaceuticals, over-the-counter products, and medical devices worldwide |
1,848 | |||
| 13 |
SEKISUI CHEMICALsekisui.co.jp
Global chemical manufacturer established in 1947, operating in housing, social infrastructure, high-performance materials, and life sciences for a sustainable society. |
1,455 | |||
Want more companies than this list?This page shows the largest ones only. Connect to Tamtam to see every company that matches, filter by size, industry or growth, and reach their decision-makers. | |||||
| 14 |
PENTAX Medicalpentaxmedical.com
Global provider of endoscopic products and services focused on improving patient care through quality, innovation, and simplicity in healthcare delivery |
1,066 | |||
| 15 |
Fujirebiofujirebio.com
R&D-driven global teams develop new technologies and biomarkers for healthcare, focusing on high quality diagnostic solutions through partnerships and collaborations |
701 | |||
| 16 |
Terumoterumo.com
A global leader in medical technology providing innovative solutions in vascular intervention, cardio-surgical, blood transfusion, cell therapy, and diabetes care |
641 | |||
| 17 |
ARKRAY, Inc.arkray.co.jp
For over 50 years, we have been dedicated to providing high-quality diabetes care products and clinical chemistry equipment to improve patient outcomes |
458 | |||
| 18 |
Nihon Kohden Corporationnihonkohden.co.jp
A leading Japanese manufacturer of medical electronic equipment such as EEG, patient monitors, AEDs, and defibrillators Providing comprehensive healthcare solutions |
449 | |||
| 19 |
Sumitomo Heavy Industries, Ltd.shi.co.jp
A technology-focused organization providing first-class products and services globally, with a spirit of manufacturing excellence and a commitment to customer satisfaction |
383 | |||
| 20 |
Terumo Interventional Systemstis.terumo.com
A global leader in minimally invasive medical technologies, offering solutions for coronary, peripheral endovascular, and urological treatments to enhance patient outcomes |
348 | |||
| 21 | 344 | ||||
| 22 |
Nisshanissha.com
Global company creating technology & economic value through core technologies like Laminating, Coating, Molding, and Printing in 4 diverse segments |
324 | |||
| 23 |
Tosoh Corporationtosoh.com
Global chemical company supplying specialty and commodity chemicals to industries including automotive, electronics, bioscience, construction, and environmental sectors. |
188 | |||
| 24 |
Global Medical Business at Canon Inc.global.medical.canon
Development of advanced medical imaging and diagnostic solutions focused on improving patient care, treatment accuracy, and healthcare professional support worldwide. |
186 | |||
| 25 |
Canon Electronics Inc.canon-elec.co.jp
Develops, produces, sells precision machines, instruments, electric and electronic machines, information devices, and software. Now entering the newspace industry. |
80 | |||
| 26 |
B dot Medical Inc.bdotmed.co.jp
Developing a super-compact proton therapy system to enable global adoption of proton therapy for medical treatment |
29 | |||
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Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 12, 2026.
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