Charles Ross & Son Company (ROSS Mixers) is one of the oldest industrial mixer manufacturers in the United States, founded in 1842, and supplies battery slurry mixers in large volume through its Wuxi, China plant.
1. Company Overview
Company name: Charles Ross & Son Company (brand: ROSS Mixers)
Founded: 1842, Rochester, New York
Headquarters: Hauppauge, New York, USA (since 1965)
Ownership: Employee-owned (ESOP) — includes affiliates such as Ross Metal Fabricators
Production bases: 4 US states, 2 in China (Wuxi), 1 in India
2. History and Workforce
Founded in Rochester in 1842, the company relocated to Brooklyn in 1868 and to its current Hauppauge headquarters in 1965. In the early 20th century it expanded into the mixer/mill market for the paint, chemical, and pharmaceutical industries, and later broadened its application scope into advanced-materials fields such as battery electrode slurries, binder solutions, electrolytes, separators, catalysts, and fuel-cell pastes.
The company operates under an employee-owned (ESOP) structure in which employees jointly own the company. Detailed workforce composition is (undisclosed).
3. Core Technology and Key Equipment
The company holds a broad range of batch mixing/dispersion equipment, including dual planetary dispersers, rotor-stator high-shear mixers, three-roll mills, and kneader extruders.
- Dual Planetary Disperser — batch mixer for large-format lithium battery applications
- Rotor-stator high-shear mixer / homogenizer
- ROSS Kneader Extruder — for high-viscosity materials
- Three Roll Mill — for pigment dispersion (first developed roughly 80 years ago)
4. Production Infrastructure and Quality Assurance
The company operates a 250,000-square-foot state-of-the-art plant in Wuxi, China, dedicated to producing large-format dual planetary dispersers for lithium battery applications. The Wuxi plant states it is the top mixing-equipment supplier to China’s battery industry, having supplied over 2,000 units cumulatively.
5. Track Record and Partnerships
A published case study describes collaboration with the Battery Innovation Center (BIC) in Indiana, USA to improve lithium-ion battery electrode manufacturing processes; the company is also a corporate member of the New York Battery and Energy Storage Technology Consortium (NY-BEST).
6. Financial Status and Roadmap
Third-party business-information services estimate annual revenue at approximately USD 161 million (estimate, not an official company disclosure).
The company continues to expand supply to the Asian battery market centered on its Wuxi, China plant, and is also strengthening its North American market presence, including exhibiting at The Battery Show North America in Detroit in October 2025.
This profile was compiled from publicly available sources including the company website (mixers.com), Chemical Engineering magazine, ZoomInfo, and RocketReach. Unverified or undisclosed figures were not arbitrarily included.