Yossi Gross (; born February 5, 1947) is an Israeli engineer, inventor and entrepreneur. He is a founding partner of Rainbow Medical, an operational investment company, established to launch companies based on the technological ideas and inventions of Gross. Yossi Gross first started his professional career in the 20th century as a project manager of the Lavi (IAI Lavi ) program for the Israel Air Force. From the 1990s through to the beginning of the 21st century, Gross started 27 medical device companies based on his various inventions in electronics, signal processing, nanotechnology, drug delivery and neurostimulation. Gross's various companies have developed or are currently developing treatments for diabetes, gastroenterology, stroke, ophthalmology, asthma, congestive heart failure, and urology. Gross has 567 filed patents. Gross is a conference speaker. He spoke at the American Israel Chamber meeting on the topic: Accelerating Medical Device Start-ups the Israeli Way and at the Wharton School of the University of Pennsylvania Biography Yossi Gross was born in Budapest, Hungary. He immigrated to Israel, with his Holocaust-survivor parents, at the age of three. His parents and family live on Moshav Mazor. Gross received an MSc degree in 1976 in aeronautical engineering from the Technion Israel Institute of Technology in Haifa, Israel. Engineering, inventing, and business career Following his graduation from the Technion in 1976, Gross joined Israel AirCraft Industries where he began to work as a flight test engineer from 1977 to 1985. Gross was on the management team of the IAI Lavi project, a program tasked to design and build a fighter jet, similar to the F-16, for the Israeli Air Force. The program was later cancelled. In 1985, Gross opened General Ideas and Products Ltd., where he developed several small electric consumer appliances. From 1988 to 1995, Gross also directed the R&D operations of Scientific Innovations. Gross's first medical creation was a small mini-pump to deliver drugs which he developed in an equally owned joint venture with Elan Corporation called Elan Medical Technologies, a subsidiary of Elan Pharmaceuticals. Gross spent most of the 1990s working at Elan developing drug delivery systems, the patents of which are assigned to Elan. In 1998, Elan bought Gross out. He stayed on for a short while as the vice president of research and development, before leaving to begin building his own business. Companies: 1990–2007 From the late 1990s through 2007, Gross launched 27 separate medical device companies, all