1969 -1980
- Entered air pollution control industry as a catalyst manufacturer and service provider.
- Federal EPA was created in 1970 to enforce the Clean Air Act (CAA).
- Fourteen innovative product patents granted leading to growth in the nuclear power generation industry, including hydrogen recombiners.
1980-1990
- Specialized in Catalytic Oxidizers and retrofit service for a number of national accounts.
- Began development of oxidizers and floating tube heat exchangers.
- Expanded business by building new offices in Lake Zurich, IL.
1990-2000
- Developed a specialized thermal treatment device used for low volume - high BTU content waste gasses.
- Thermal oxidizer for coating applications with heavy siloxanes developed.
- Regenerative Thermal Oxidizer (RTO) entry, including flow control valves and media bed designs.
2000-2010
- Thermal Combustor System (TCS) for meeting needs in the gas and oil industry introduced.
- Developed a first-of-its kind process for treating ammonia and other nitrates in waste and water.
- Several variations of SCR products for treating nitrogen oxidize (NOx) from industrial sources.
- Developed flameless, electrically heated Catalytic Oxidizer.

2010-2020
- Developed direct and indirect low emission process heaters for industrial applications.
- Next generation Regenerative Thermal Oxidizer with vertical valve design released.
- Expanded RTO size range, to cover from 500 to 80,000 scfm.
- Innovated RTO ceramic media bed designs for Silicone, rendering, and other particulate applications.
- In 2019, celebrated 50 years of Enabling Clean Production™.

2020-Present
- Regenerative Thermal Oxidizer product line extensions for new industry applications.
- Selective Catalytic Reduction (SCR) product line expanded for increased volume.
- In 2024, celebrated 55 years of Enabling Clean Production™.

QUADRANT - NR-Series - Thermal Oxidizers Brochure