A Polish-born Jewish Holocaust survivor who spent much of the end of World War II in various concentration camps, Orenstein became a toymaker who convinced Hasbro to start producing Transformers. He holds over 100 other patents, and aside from Transformers, the best-known of these inventions is U.S. Patent 5,451,054 which gave Orenstein the exclusive right in the United States to detect and display hole cards in poker games.
Orenstein is a noted philanthropist. In 1984, the American government built an eleven-story building for low income families, known as the Lejb and Golda Orenstein Building, in honor of Orenstein's parents, who were murdered by the Nazis. Orenstein helped pay for the apartments. There is also a Lejb and Golda Orenstein Building in Kiryat Ono, Israel which consists of housing units and recreational facilities. Orenstein contributed most of the money towards this project. Orenstein has his own chapter at Metropolitan Council for the Jewish Poor in New York. Over the past thirty years, Orenstein has assisted thousands of poor New Yorkers to pay their rent and medical bills.
I Shall Live: Surviving Against All Odds 1939-1945, a memoir of his experiences during the Nazi Holocaust and his survival in five concentration camps.
Abram: The Life of an Israeli Patriot, a biography of Abram Silberstein who emigrated to then Palestine in 1934. He enlisted in the British army in 1939 and rose from the rank of private to rank of Major. He was great help to Ben Gurion.