# Top 30 companies with in-house R&D in the Eure-et-Loir department
Tamtam tracks 33 companies with in-house R&D headquartered in the Eure-et-Loir department. This list ranks the 30 largest by number of employees on LinkedIn, led by Eurofeu, ITAS and CERIB. Their median headcount is 59. Half of them were founded in 1985 or later. The most common headquarters are Chartres (7).
The companies in Eure-et-Loir with in-house R&D are primarily mid-sized firms, with a strong presence in manufacturing and industrial services. For example, Eurofeu manufactures and distributes fire extinguishers, while GROUPE LATTY produces sealing solutions. DELPHARM SAINT REMY is a contract manufacturer for pharmaceutical labs, and CERIB is a technical research center for the concrete industry. GFP_tech develops SaaS software for medical insurance.
Industrial machinery manufacturing is well-represented, with companies like Paker specializing in multipack machines and OCT脡, Lift Equipment designing elevator components. There is also a notable cluster of companies founded in the mid-20th century, such as SACRED GROUP (1946) in rubber products and Fillon Technologies (1954) in paint mixing machines.
馃嚝馃嚪 Eure-et-Loir 路 30 companies 路 Updated Nov 11, 2026
| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Eurofeu](https://www.tamtam.ai/c/eurofeu) (eurofeu.fr)
Eurofeu manufactures and distributes certified fire extinguishers, with a focus on innovation and sustainability, leading in the French fire safety market #letssharetheflame | Wholesale | 馃嚝馃嚪 Senonches | 1,153 | 1972 |
| 2 | [ITAS](https://www.tamtam.ai/c/itas) (itas.fr)
Designs and manufactures broadcast and base station antennas, tower systems, and provides visual integration solutions for broadcast and wireless operators, including tower operations for TV and telecom. | Telecommunications | 馃嚝馃嚪 Anet | 267 | 1989 |
| 3 | [CERIB](https://www.tamtam.ai/c/cerib) (cerib.com)
A technical research and innovation center specializing in construction and concrete industry, providing support, testing, certification, and training services to various industrial sectors | Research Services | 馃嚝馃嚪 脡pernon | 215 | 1967 |
| 4 | [DELPHARM SAINT REMY](https://www.tamtam.ai/c/delpharm-saint-remy) (delpharm.com)
Leading European contract manufacturer producing various forms of medicines with high quality, punctuality, and economic balance for global pharmaceutical labs. | Pharmaceutical Manufacturing | 馃嚝馃嚪 Saint-R茅my-sur-Avre | 215 | |
| 5 | [GROUPE LATTY](https://www.tamtam.ai/c/groupe-latty) (latty.com)
Manufacturing sealing solutions, gaskets, and mechanical seals for mining, oil & gas, energy, chemical, and agribusiness industries worldwide. | Manufacturing | 馃嚝馃嚪 Brou | 175 | 1920 |
| 6 | [GFP_tech](https://www.tamtam.ai/c/gfp-tech) (gfptechnologies.fr)
Development of comprehensive SaaS software for medical insurance and risk management, including CRM, BI, and mobile applications. | Software Development | 馃嚝馃嚪 Chartres | 139 | 2020 |
| 7 | [Paker](https://www.tamtam.ai/c/paker) (paker.fr)
A company specializing in multipack machines and end of line equipment, ensuring all project dimensions are considered for optimal packaging solutions | Industrial Machinery Manufacturing | 馃嚝馃嚪 Fontenay-sur-Eure | 127 | 1985 |
| 8 | [SACRED GROUP](https://www.tamtam.ai/c/sacred-group) (sacredgroup.com)
A company in the Rubber & Polymers industry with global presence, specialized in designing, selling raw materials, and producing parts for automotive OEMs | Rubber Products Manufacturing | 馃嚝馃嚪 Saint-Lubin-des-Joncherets | 126 | 1946 |
| 9 | [MULLER AUTOMOTIVE](https://www.tamtam.ai/c/muller-automotive) (mullerautomotive.fr)
Design and manufacture vehicle inspection equipment including measurement chains, pollution control devices, and mobile stations with global customer support and maintenance services. | Industrial Machinery Manufacturing | 馃嚝馃嚪 Chartres | 115 | 1919 |
| 10 | [Fillon Technologies](https://www.tamtam.ai/c/fillon-technologies) (fillontech.com)
Designs and manufactures advanced paint mixing machines, spray gun washers, and aerosol fillers for automotive bodyshop repair worldwide. | Machinery Manufacturing | 馃嚝馃嚪 Faverolles | 108 | 1954 |
| 11 | [humelab hospitality](https://www.tamtam.ai/c/humelab-hospitality) (humelab-hospitality.com)
This company provides digital and audiovisual equipment installation and comprehensive digital solutions for hospitality, health, and public sector clients, including Wifi, IPTV, and digital signage | IT Services and IT Consulting | 馃嚝馃嚪 Dreux | 78 | 2002 |
| 12 | [Systech - TR2E](https://www.tamtam.ai/c/systech-tr2e) (systech-ste.fr)
Specializing in electronic prototypes and small to medium series, the company offers research, development, design, manufacturing, quality control, and certifications services | Appliances, Electrical, and Electronics Manufacturing | 馃嚝馃嚪 Gallardon | 78 | 1991 |
| 13 | [FUTUROL](https://www.tamtam.ai/c/futurol) (futurol.fr)
French manufacturer of roller shutters, garage doors, and adjustable sunshades Products designed, tested, and certified in five production units across France | Wholesale | 馃嚝馃嚪 Thimert-G芒telles | 69 | 2015 |
| 14 | [Ets Denis Brou](https://www.tamtam.ai/c/ets-denis-brou) (denis.fr)
Established in 1855, we design, manufacture, and market mechanical handling and cleaning equipment for various bulk products with expertise and quality | Machinery Manufacturing | 馃嚝馃嚪 Brou | 63 | 1855 |
| 15 | [OCT脡, Lift Equipment](https://www.tamtam.ai/c/octe-lift-equipment) (octe.eu)
Design and manufacture electrical and mechanical elevator components, provide modernization solutions, and distribute parts across multiple countries with innovation focus. | Industrial Machinery Manufacturing | 馃嚝馃嚪 Ch芒teauneuf-en-Thymerais | 59 | 1962 |
| 16 | [ITC ELASTOMERES](https://www.tamtam.ai/c/itc-elastomeres) (itc-elastomeres.com)
Specialized in technical elastomer parts since 1974, this company serves industries with high standards such as aerospace, defense, motorsports, energy, and medical sectors | Rubber Products Manufacturing | 馃嚝馃嚪 Toury | 44 | 1974 |
| 17 | [B.2.E.I](https://www.tamtam.ai/c/b-2-e-i) (b2ei.com)
This company specializes in electrical cabinet design and wiring, offering services such as schematic drawing, complete studies, panel assembly, and transportation | Appliances, Electrical, and Electronics Manufacturing | 馃嚝馃嚪 Chartres | 39 | |
| 18 | [COOK INOV](https://www.tamtam.ai/c/cook-inov) (cookinov.fr)
Design and manufacture of organic, gourmet, and dietetic culinary products with customized packaging and certified quality standards. | Food and Beverage Manufacturing | 馃嚝馃嚪 Nogent-le-Rotrou | 37 | 1997 |
| 19 | [Coop茅rative Bonneval Beauce et Perche](https://www.tamtam.ai/c/cooperative-bonneval-beauce-et-perche) (bonnevalbeauceetperche.coop)
A cooperative based in Eure-et-Loir specializing in large-scale crop production, offering research, consulting, input sales, market placement, and technical innovations for member sustainability | Farming | 馃嚝馃嚪 Bonneval | 33 | 1933 |
| 20 | [LCA Pharmaceutical](https://www.tamtam.ai/c/lca-pharmaceutical) (lca-pharma.com)
Specializing in medical implant devices for ophthalmology, rheumatology, and dermatology, this company focuses on innovation, technology, and customer satisfaction, holding numerous patents globally | Medical Equipment Manufacturing | 馃嚝馃嚪 Chartres | 32 | 1977 |
| 21 | [KE Outdoor Design France](https://www.tamtam.ai/c/ke-outdoor-design-france) (keoutdoordesign.com)
A French company specializing in custom outdoor shading solutions, including awnings and pergolas, known for high-quality, environmentally friendly products with Italian design and French craftsmanship | Architecture and Planning | 馃嚝馃嚪 Tremblay-les-Villages | 32 | |
| 22 | [FORMATYPE](https://www.tamtam.ai/c/formatype) (formatype.com)
Designing and manufacturing complex metal parts in prototype, pre-series, or small series using CAD, stamping, laser cutting, and welding techniques with various materials. | Motor Vehicle Manufacturing | 馃嚝馃嚪 Cherisy | 27 | 1987 |
| 23 | [The Innovation Company庐](https://www.tamtam.ai/c/the-innovation-company) (theinnovationcompany.fr)
The company designs innovative raw materials for cosmetics, with divisions specializing in color cosmetics, sun care, and skin care globally | Personal Care Product Manufacturing | 馃嚝馃嚪 Dreux | 24 | 1987 |
| 24 | [Sicofor Packaging & Solutions](https://www.tamtam.ai/c/sicofor-packaging-and-solutions) (sicofor.com)
Specializing in designing and manufacturing sample and single-dose sales items for over 45 years, offering standard or unique innovative solutions for various clients | Personal Care Product Manufacturing | 馃嚝馃嚪 Ch芒teaudun | 23 | |
| 25 | [CXR ANDERSON JACOBSON](https://www.tamtam.ai/c/cxr-anderson-jacobson) (cxr.com)
A communication equipment vendor offering innovative solutions for Telecom, Defense, Utility markets Specializing in Ethernet, wireless, TDM over IP, optical multiplexing, and network management | Telecommunications | 馃嚝馃嚪 Abondant | 23 | 1974 |
| 26 | [Impact Pro](https://www.tamtam.ai/c/impact-pro) (impact-pro.fr)
Develops and manufactures sustainable, profitable fertilizer formulations for agriculture and hygiene products. Provides quality French-made solutions, support, and advice to clients. | Manufacturing | 馃嚝馃嚪 Chartres | 22 | 1995 |
| 27 | [ELOKENCE](https://www.tamtam.ai/c/elokence) (elokence.com)
The company develops and markets intelligent services for man-machine dialogue, making complex information databases accessible through natural language on internet and mobile devices | Technology, Information and Internet | 馃嚝馃嚪 Chartres | 20 | 2007 |
| 28 | [Groupe JOGAM](https://www.tamtam.ai/c/groupe-jogam) (jogam.fr)
Specializes in machining and sheet metal fabrication, supporting major international aerospace companies with complementary industrial expertise since 1992. | Industrial Machinery Manufacturing | 馃嚝馃嚪 Pierres | 20 | 1992 |
| 29 | [Atecmaa Packaging](https://www.tamtam.ai/c/atecmaa-packaging) (atecmaa-packaging.com)
French company specializing in designing, manufacturing, and maintaining pallet wrapping systems with focus on safety, reliability, and productivity. | Machinery Manufacturing | 馃嚝馃嚪 Terminiers | 18 | 1985 |
| 30 | [BYOME LABS](https://www.tamtam.ai/c/byome-labs) (byomelabs.com)
Research and analysis of cosmetic product compatibility with skin, providing scientific expertise and substantiation of marketing claims. | Biotechnology Research | 馃嚝馃嚪 Chartres | 16 | 2023 |
## 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.
## More company lists in the Eure-et-Loir department
- [The largest companies in the Eure-et-Loir department](https://www.tamtam.ai/l/largest-companies-eure-et-loir) (225)
- [Manufacturers in the Eure-et-Loir department](https://www.tamtam.ai/l/manufacturers-eure-et-loir) (38)
## The same list elsewhere in France
- [Companies with in-house R&D in France](https://www.tamtam.ai/l/r-and-d-companies-france) (8,750)
- [Companies with in-house R&D in 脦le-de-France](https://www.tamtam.ai/l/r-and-d-companies-ile-de-france) (2,695)
- [Companies with in-house R&D in Auvergne-Rh么ne-Alpes](https://www.tamtam.ai/l/r-and-d-companies-auvergne-rhone-alpes) (1,460)
- [Companies with in-house R&D in Occitanie](https://www.tamtam.ai/l/r-and-d-companies-occitanie) (680)
- [Companies with in-house R&D in Grand Est](https://www.tamtam.ai/l/r-and-d-companies-grand-est) (640)
- [Companies with in-house R&D in Provence-Alpes-C么te d'Azur](https://www.tamtam.ai/l/r-and-d-companies-provence-alpes-cote-dazur) (613)
- [Companies with in-house R&D in Nouvelle-Aquitaine](https://www.tamtam.ai/l/r-and-d-companies-nouvelle-aquitaine) (566)
- [Companies with in-house R&D in the Hauts-de-Seine department](https://www.tamtam.ai/l/r-and-d-companies-hauts-de-seine) (510)
- [Companies with in-house R&D in the Rh么ne department](https://www.tamtam.ai/l/r-and-d-companies-rhone) (509)
- [Companies with in-house R&D in Pays de la Loire](https://www.tamtam.ai/l/r-and-d-companies-pays-de-la-loire) (480)
- [Companies with in-house R&D in Hauts-de-France](https://www.tamtam.ai/l/r-and-d-companies-hauts-de-france) (410)
- [Companies with in-house R&D in Brittany](https://www.tamtam.ai/l/r-and-d-companies-brittany) (366)
- [Companies with in-house R&D in the Haute-Garonne department](https://www.tamtam.ai/l/r-and-d-companies-haute-garonne) (323)
- [Companies with in-house R&D in the Bouches-du-Rh么ne department](https://www.tamtam.ai/l/r-and-d-companies-bouches-du-rhone) (321)
- [Companies with in-house R&D in the Is猫re department](https://www.tamtam.ai/l/r-and-d-companies-isere) (304)
- [Companies with in-house R&D in Bourgogne-Franche-Comt茅](https://www.tamtam.ai/l/r-and-d-companies-bourgogne-franche-comte) (261)
- [Companies with in-house R&D in the Nord department](https://www.tamtam.ai/l/r-and-d-companies-nord) (237)
- [Companies with in-house R&D in Normandy](https://www.tamtam.ai/l/r-and-d-companies-normandy) (227)
- [Companies with in-house R&D in the Gironde department](https://www.tamtam.ai/l/r-and-d-companies-gironde) (225)
- [Companies with in-house R&D in the Loire-Atlantique department](https://www.tamtam.ai/l/r-and-d-companies-loire-atlantique) (207)
- [Companies with in-house R&D in the Essonne department](https://www.tamtam.ai/l/r-and-d-companies-essonne) (198)
- [Companies with in-house R&D in Centre-Val de Loire](https://www.tamtam.ai/l/r-and-d-companies-centre-val-de-loire) (195)
- [Companies with in-house R&D in Paris](https://www.tamtam.ai/l/r-and-d-companies-paris) (1,249)
- [Companies with in-house R&D in Lyon](https://www.tamtam.ai/l/r-and-d-companies-lyon) (192)
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Source: https://www.tamtam.ai/l/r-and-d-companies-eure-et-loir