Ingen is an established medical device manufacturer with oxygen therapy products for the respiratory care markets. These products include a proprietary pneumatic oxygen flow meter referred to as "Oxyview", and the "Oxyview Nasal Cannula". The newest product was introduced in January of 2010 referred to as the "Oxyview Pulse Oximeter". The respiratory care market is worth an estimated $4 Billion in the US, and $8 billion globally. The company introduced its first Oxyview product in late 2007 after securing US and Foreign Patents and successful classification with the Food & Drug Administration, and licensing with the Department of Health & Human Services. In 2009, the company introduced the Oxyview Nasal Cannula for adult, children and infants. In addition to selling its respiratory products within the global medical industry, the company is selling the same products within other industries that include aviation, automotive, emergency response, military and government sources. Ingen manufacturers their respiratory products in the United States. There are 32 million US patients with Chronic Obstructive Pulmonary Disease (COPD), and 600 million COPD patients worldwide. Ingen Technologies is now the largest manufacturer of in-line gravity-independent oxygen flow meters.