Inogen, Inc. is a medical technology company, which engages in the development, manufacture, and marketing of portable oxygen concentrators used to deliver supplemental long-term oxygen therapy to patients suffering from chronic respiratory conditions. The company is headquartered in Goleta, California and currently employs 766 full-time employees. The company went IPO on 2014-02-14. The company supports patient respiratory care by developing, manufacturing, and marketing portable oxygen concentrators used to deliver supplemental long-term oxygen therapy to patients suffering from chronic respiratory conditions. Its Inogen One and Inogen Rove systems concentrate the air around the patient to offer a source of supplemental oxygen with a battery and can be plugged into an outlet when at home, in a car, or in a public place with outlets available. Its Inogen One and Inogen Rove systems reduce the patient’s reliance on stationary concentrators and scheduled deliveries of tanks with a finite supply of oxygen. Inogen Connect is a wireless connectivity platform for the Inogen One G4, Inogen One G5, Inogen Rove 4, and Inogen Rove 6, consisting of a front-end mobile application for use by long-term oxygen therapy users. The company offers Simeox, which is an airway clearance device.