INOGEN INC., is a US company specialized in the design and manufacturing of Portable Oxygen Concentrators (POCs). A Product development based in advanced engineering (Inogen designs and manufactures all essential components of its POCs in its own facilities, including the air compressor itself) together with the use of only high quality components has allowed INOGEN POCs to become market leaders and a benchmark in the portable supplementary oxygen therapy field.
SEFAM is a French company specialized in the design and manufacturing of devices for the diagnosis and treatment of sleep respiratory diseases. SEFAM headquarters in Nancy, France, started CPAP (Continuous Positive Airway Pressure) production, for the treatment of Sleep Apnea/Hypopnea Syndrome (SAHS), in 1985. Production is still running successfully nowadays.