Since 1989, Buffalo-based Harper International has engineered and manufactured custom thermal-processing furnaces, kilns and ovens for advanced-materials production. Its work spans research through commercialization, with a particular depth in carbon-fiber systems and high-temperature processing under controlled atmospheres. Harper is 100% employee owned and operates a Technology Research Center where customers can develop and pilot processes before scaling to production.
100% Employee Owned
Compliance program
Sentro TechFounded in 1998, family-owned Sentro Tech manufactures high-temperature furnaces and processing equipment from its Northeast Ohio facility. The company began by making molybdenum disilicide heating elements and expanded into custom laboratory and production furnace design in 2004, now supporting applications from dental labs to battery and ceramic manufacturing. Its Ohio team also provides technical service and keeps replacement parts in stock for customers.STRONGSVILLE, OH
CeraMaterialsFounded in 2006 by ceramic engineering PhD Jerry Weinstein, CeraMaterials manufactures and distributes high-temperature refractory materials for thermal processing, with a particular focus on carbon, graphite and carbon-fiber-composite furnace insulation and fixtures. Based in Dingmans Ferry, Pennsylvania, the company combines stocked materials and custom fabrication with application engineering and material consultation led by a founder who holds more than 46 U.S. patents. Its products serve heat-treatment customers across the United States and Canada through regional representatives and strategically placed warehouses.327110DINGMANS FERRY, PA
Heyl Patterson Thermal ProcessingFor more than 140 years, Heyl Patterson Thermal Processing has engineered and manufactured high-temperature equipment that dries, cools, and calcines difficult powders and bulk solids. Its rotary systems are built around each material’s behavior and process requirements, with pilot-scale testing available through its Innovation Center and Test Lab. Heyl Patterson is part of CPEG, a 100% employee-owned company created in 2016.CARNEGIE, PA
Onex, IncSince 1966, Onex, Inc. has been part of Erie’s industrial community and is now wholly owned by the employees who carry its work forward. Known for its hands-on support of American forging and foundry operations, the company helps industrial customers design, maintain, and restore the high-temperature furnace systems their production depends on. Its 25,000-square-foot facility gives the employee-owned team room to take on larger projects while serving customers across the United States.ERIE, PA