# The 40 largest companies with in-house R&D in Aargau

Tamtam tracks 40 companies with in-house R&D headquartered in Aargau. This list ranks all of them by number of employees on LinkedIn, led by Franke Group, Omya and University of Applied Sciences and Arts Northwestern Switzerland FHNW. Their median headcount is 237. Half of them were founded in 1947 or later.

These Aargau-based companies with in-house R&D span manufacturing, higher education, and specialized services. Franke Group supplies kitchen products and services, while Omya produces industrial minerals and specialty chemicals. Montana Aerospace manufactures components for aerospace and electromobility, and Siegfried specializes in pharmaceutical APIs. The Paul Scherrer Institut operates large research facilities, and Accelleron is a leader in turbocharging solutions.

The companies listed are largely well-established, with Omya, Siegfried, Zehnder Group, and Psychiatrische Dienste Aargau AG all founded in the 19th century. A significant number of these firms are involved in manufacturing, particularly in specialized areas like pharmaceuticals, aerospace, and industrial machinery, indicating a strong regional focus on advanced industrial production and research.

🇨🇭 Aargau · 40 companies · Updated Nov 11, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Franke Group](https://www.tamtam.ai/c/franke-group) (franke.com)<br>Leading global supplier of kitchen products and services including sinks, taps, foodservice equipment, and professional coffee machines worldwide. | Manufacturing | 🇨🇭 Aarburg | 4,448 |  |
| 2 | [Omya](https://www.tamtam.ai/c/omya) (omya.com)<br>Global producer of industrial minerals and distributor of specialty chemicals, offering innovative products for various industries and environmental solutions worldwide | Chemical Manufacturing | 🇨🇭 Ch-4665 | 4,415 | 1884 |
| 3 | [University of Applied Sciences and Arts Northwestern Switzerland FHNW](https://www.tamtam.ai/c/university-of-applied-sciences-and-arts-northwestern-switzerland-fhnw) (fhnw.ch)<br>Leading Swiss university offering practical degree programs, innovative research, continuing education, and strong industry partnerships in applied sciences and arts. | Higher Education | 🇨🇭 Windisch | 4,379 | 2006 |
| 4 | [Montana Aerospace](https://www.tamtam.ai/c/montana-aerospace) (montana-aerospace.com)<br>A global manufacturer of system components and assemblies for aerospace, electromobility, and energy industries, using aluminum, titanium, composites, copper, and steel | Aviation and Aerospace Component Manufacturing | 🇨🇭 Reinach | 2,821 | 2008 |
| 5 | [Siegfried](https://www.tamtam.ai/c/siegfried) (siegfried.ch)<br>Contract development and manufacturing organization specializing in pharmaceutical APIs, intermediates, and drug products including tablets and sterile forms. | Pharmaceutical Manufacturing | 🇨🇭 Zofingen | 2,254 | 1873 |
| 6 | [Accelleron](https://www.tamtam.ai/c/accelleron) (accelleron.com)<br>Global leader in turbocharging, fuel injection, and digital solutions supporting marine and energy industries for efficient, sustainable heavy-duty applications. | Industrial Machinery Manufacturing | 🇨🇭 Baden | 1,878 |  |
| 7 | [PSI Paul Scherrer Institut](https://www.tamtam.ai/c/psi-paul-scherrer-institut) (psi.ch)<br>Development, construction, and operation of large research facilities supporting national and international scientific communities in technology, energy, health, and nature. | Research Services | 🇨🇭 Villigen PSI | 1,848 | 1988 |
| 8 | [dsm-firmenich Animal Nutrition & Health](https://www.tamtam.ai/c/dsm-firmenich-animal-nutrition-and-health) (dsm-firmenich.com)<br>Supplier of science-based products and innovation for sustainable health, well-being, and efficiency in farm animal production to meet industry demands | Farming | 🇨🇭 Kaiseraugst | 1,710 |  |
| 9 | [Zehnder Group International AG](https://www.tamtam.ai/c/zehnder-group-international-ag) (zehndergroup.com)<br>Providing tailored heating, cooling, and ventilation solutions to ensure comfortable temperatures and fresh, clean indoor air worldwide. | HVAC and Refrigeration Equipment Manufacturing | 🇨🇭 Gränichen | 917 | 1895 |
| 10 | [Swisslog Healthcare](https://www.tamtam.ai/c/swisslog-healthcare) (swisslog-healthcare.com)<br>Integrated medication supply chain solutions for hospitals and health systems, optimizing operations to improve patient care with automation and intelligent software | Hospitals and Health Care | 🇨🇭 Buchs/Aarau | 837 |  |
| 11 | [Mitsubishi Chemical Advanced Materials](https://www.tamtam.ai/c/mitsubishi-chemical-advanced-materials) (mcam.com)<br>A global leader in high-performance thermoplastic materials, specializing in engineering thermoplastics and composites for various industries and applications worldwide | Plastics Manufacturing | 🇨🇭 Lenzburg | 746 |  |
| 12 | [Solvias](https://www.tamtam.ai/c/solvias) (solvias.com)<br>Provides CMC analytical testing and API development for small molecules, biologics, and gene therapies with global GMP-certified facilities. | Pharmaceutical Manufacturing | 🇨🇭 Kaiseraugst | 712 | 1999 |
| 13 | [Psychiatrische Dienste Aargau AG (PDAG)](https://www.tamtam.ai/c/psychiatrische-dienste-aargau-ag-pdag) (pdag.ch)<br>Specializing in psychiatry, the company provides tailored inpatient and outpatient treatment for individuals of all ages, offering psychiatric care, emergency services, and educational programs | Mental Health Care | 🇨🇭 Windisch | 652 | 1872 |
| 14 | [Franke Coffee Systems](https://www.tamtam.ai/c/franke-coffee-systems) (franke.com)<br>Specializing in professional coffee solutions, they offer a range of equipment and services to enhance customer experiences and ensure high-quality coffee consistently | Food and Beverage Services | 🇨🇭 Aarburg | 571 |  |
| 15 | [Müller Martini](https://www.tamtam.ai/c/muller-martini) (mullermartini.com)<br>Global manufacturer of print finishing systems, offering innovative solutions for brochures, magazines, and books Specialized staff supports digital transformation and smart factory goals | Machinery Manufacturing | 🇨🇭 Zofingen | 462 | 1946 |
| 16 | [Dottikon Exclusive Synthesis AG](https://www.tamtam.ai/c/dottikon-exclusive-synthesis-ag) (dottikon.com)<br>Manufactures high-quality chemicals, APIs, and intermediates using hazardous reactions, advanced chemistry, and continuous processing for chemical, biotech, and pharmaceutical industries worldwide | Chemical Manufacturing | 🇨🇭 Dottikon | 400 | 1913 |
| 17 | [KWC Group](https://www.tamtam.ai/c/kwc-group) (kwc.com)<br>Designs and manufactures fittings and accessories for residential, commercial kitchens, bathrooms, and medical facilities, offering high-end solutions with a global presence | Manufacturing | 🇨🇭 Unterkulm | 393 | 1874 |
| 18 | [Brugg Cables \| Terna Energy Solutions](https://www.tamtam.ai/c/brugg-cables-terna-energy-solutions) (bruggcables.com)<br>Swiss manufacturer specializing in innovative cables and accessories for energy transmission and distribution with comprehensive service offerings. | Manufacturing | 🇨🇭 Brugg | 317 | 1896 |
| 19 | [International Luxury Group (ILG of Switzerland AG)](https://www.tamtam.ai/c/international-luxury-group-ilg-of-switzerland-ag) (interluxury.com)<br>A leading company specializing in licensed luxury, lifestyle, and fashion products, with expertise in product development, global supply chain, and distribution | Retail Luxury Goods and Jewelry | 🇨🇭 Möhlin | 302 |  |
| 20 | [ZURZACH Care Unternehmensgruppe](https://www.tamtam.ai/c/zurzach-care-unternehmensgruppe) (zurzachcare.ch)<br>Leading Swiss healthcare group with 21 locations, 1,200 employees offering medical, nursing, and therapeutic services, including prevention, treatment, rehabilitation, and reintegration programs | Hospitals and Health Care | 🇨🇭 Bad Zurzach | 237 | 2003 |
| 21 | [DGS Druckguss Systeme AG](https://www.tamtam.ai/c/dgs-druckguss-systeme-ag) (dgs-druckguss.com)<br>Specialized in light metal die-casting, producing high-precision aluminum and magnesium components for automotive and high-tech industries, focusing on structural castings and innovative solutions. | Motor Vehicle Manufacturing | 🇨🇭 St. Gallen | 225 | 1925 |
| 22 | [SUHNER Group](https://www.tamtam.ai/c/suhner-group) (suhner.com)<br>Innovative solutions for industrial products and manufacturing processes Diversified offerings meeting customer needs with high-quality, in-house designed products | Machinery Manufacturing | 🇨🇭 Lupfig | 210 | 1914 |
| 23 | [Rotho](https://www.tamtam.ai/c/rotho) (ch.rotho.com)<br>A leading European manufacturer of plastic consumer goods with a history of adapting to market changes and prioritizing customer needs | Manufacturing | 🇨🇭 Würenlingen | 208 | 1889 |
| 24 | [Huba Control AG](https://www.tamtam.ai/c/huba-control-ag) (hubacontrol.com)<br>Development and production of high-quality pressure switches, pressure and flow sensors contributing to energy conservation and emission reduction. | Measuring and Control Instrument Manufacturing | 🇨🇭 Würenlos | 204 | 1945 |
| 25 | [JAG Jakob AG](https://www.tamtam.ai/c/jag-jakob-ag) (jag.ch)<br>A leading automation and process technology company with over 90 years' experience, specializing in turnkey solutions for the pharmaceutical, biotech, and food industries | Engineering Services | 🇨🇭 Brugg | 183 | 1930 |
| 26 | [ROSTA Group](https://www.tamtam.ai/c/rosta-group) (rosta.com)<br>Leading global manufacturer of rubber suspension systems for over 75 years, offering highly engineered torsional rubber springs to improve productivity and efficiency with technical expertise | Machinery Manufacturing | 🇨🇭 Hunzenschwil | 104 | 1944 |
| 27 | [Richnerstutz AG](https://www.tamtam.ai/c/richnerstutz-ag) (richnerstutz.ch)<br>This company based in Villmergen specializes in transforming communication into a 3D experience through advertising technology, temporary architecture, events, and more | Advertising Services | 🇨🇭 Villmergen | 96 | 2005 |
| 28 | [Jehle AG](https://www.tamtam.ai/c/jehle-ag) (jehleag.ch)<br>Precision engineering company specializing in customized metal and plastic components, tooling, and molds for various industries, offering complete solutions from design to assembly | Fabricated Metal Products | 🇨🇭 Etzgen | 54 | 1947 |
| 29 | [REAL-TECHNIK AG](https://www.tamtam.ai/c/real-technik-ag) (realag.ch)<br>Specializing in development, toolmaking, and production of technical injection-molded parts for various industries, certified with ISO 13485 and ISO 9001 Offering assembly-ready solutions | Plastics Manufacturing | 🇨🇭 Kaiseraugst | 35 | 1971 |
| 30 | [Medivation AG](https://www.tamtam.ai/c/medivation-ag) (medivation.ch)<br>A medtech company specializing in developing and producing high-quality medical products, leveraging expertise and experience to transform ideas into reality | Medical Equipment Manufacturing | 🇨🇭 Baden | 29 | 2009 |
| 31 | [Algra Group](https://www.tamtam.ai/c/algra-group) (algragroup.ch)<br>Specializing in custom input systems, fronts, casings, industrial signs, and electronics assembly sourced globally Innovative products with in-house research and development | Industrial Machinery Manufacturing | 🇨🇭 Merenschwand | 24 |  |
| 32 | [Hadimec AG](https://www.tamtam.ai/c/hadimec-ag) (hadimec.com)<br>A full-service provider specializing in engineering, PCB assembly, box build, cable assembly, and connectors for electronic systems, with a focus on lifecycle management and competitive advantages | Appliances, Electrical, and Electronics Manufacturing | 🇨🇭 Mägenwil | 22 | 1987 |
| 33 | [Ascom Solutions AG](https://www.tamtam.ai/c/ascom-solutions-ag) (ascom.com)<br>Global solutions provider specializing in healthcare ICT and mobile workflow solutions, closing digital information gaps for optimal decision-making in various sectors worldwide | IT Services and IT Consulting | 🇨🇭 Mägenwil | 19 | 1852 |
| 34 | [Löwenstein Medical Schweiz AG](https://www.tamtam.ai/c/lowenstein-medical-schweiz-ag) (loewensteinmedical.com)<br>A leading medtech company in sleep and respiratory medicine, providing innovative technologies, services, and products to improve patient health and quality of life | Medical Equipment Manufacturing | 🇨🇭 Neuenhof | 18 |  |
| 35 | [Partino Mobile Energie AG](https://www.tamtam.ai/c/partino-mobile-energie-ag) (partino.ch)<br>Develops comprehensive electric mobility solutions: modern charging stations, intelligent load management, and transparent billing systems. Designs innovative hardware and software from Switzerland. | Appliances, Electrical, and Electronics Manufacturing | 🇨🇭 Oberentfelden | 18 | 2013 |
| 36 | [ANAXAM - Technology transfer center for advanced manufacturing](https://www.tamtam.ai/c/anaxam-technology-transfer-center-for-advanced-manufacturing) (anaxam.ch)<br>Technology transfer center offering advanced materials analytics using neutron and synchrotron radiation for industrial applications, including consultancy, measurements, and analysis services | Nanotechnology Research | 🇨🇭 Villigen | 11 | 2019 |
| 37 | [ArrowFast Medical Device Engineering](https://www.tamtam.ai/c/arrowfast-medical-device-engineering) (arrowfast.tech)<br>A medical device development company with a global team of engineers and specialists, offering fixed budget development, timely certification, and proven processes | Medical Equipment Manufacturing | 🇨🇭 Brugg | 10 |  |
| 38 | [Excelsus Structural Solutions AG](https://www.tamtam.ai/c/excelsus-structural-solutions-ag) (excelsusss.com)<br>Provides cutting-edge synchrotron-based structural characterization services for pharmaceuticals, including polymorph detection, quantification, and R&D collaborations, using advanced X-ray diffraction solutions worldwide. | Research Services | 🇨🇭 Villigen | 9 | 2012 |
| 39 | [SMT Swiss Mains GmbH](https://www.tamtam.ai/c/smt-swiss-mains-gmbh) (swissmains.com)<br>The company specializes in developing electronics and software for virtual and life simulation, measurement technology, consulting, UHF amplifiers, and multiplexers They also offer services in GIS, wireless networks, and education software | IT Services and IT Consulting | 🇨🇭 Würenlos | 9 | 2000 |
| 40 | [SINTRATEC](https://www.tamtam.ai/c/sintratec) (urbanbrewandbbq.com)<br>Swiss manufacturer of precision 3D printers for professional use, breaking down barriers between imagination and reality to create functional components with advanced additive manufacturing solutions | Machinery Manufacturing | 🇨🇭 Brugg | 3 | 2014 |

## How this list is built

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 11, 2026.

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## The same list elsewhere in Switzerland

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Source: https://www.tamtam.ai/l/r-and-d-companies-aargau