when were the first thermos flasks produced for commercial use
1904
title: Vacuum flask text: James Dewar created the vacuum flask, which became a significant tool for chemical experiments and also became a common household item. The flask was later developed using new materials such as glass and aluminum; however, Dewar refused to patent his invention. Dewar's design was quickly transformed into a commercial item in 1904 as two German glassblowers, Reinhold Burger and Albert Aschenbrenner, discovered that it could be used to keep cold drinks cold and warm drinks warm. The Dewar flask design had never been patented but the German men who discovered the commercial use for the product renamed it "Thermos," and title: Thermos L.L.C. text: with a lowercase "thermos," while Thermos, then called The King-Seeley Thermos Company, retained the uppercase usage. Invented in 1892 by Sir James Dewar, a scientist at Oxford University, the "vacuum flask" was not manufactured for commercial use until 1904, when two German glass blowers, "Reinhold Burger" and "Albert Aschenbrenner," formed Thermos GmbH. They held a contest to name the "vacuum flask" and a resident of Munich submitted "Thermos," which came from the Greek word "therme," meaning "heat." The thermos is commonly called the Dewar flask among chemists in recognition of its inventor, James Dewar. Dewar did not register a patent title: Vacuum flask text: liquid container. The vacuum flask went on to be used for many different types of scientific experiments and the commercial “Thermos” was transformed into a common item. "Thermos" remains a registered trademark in some countries, but it was declared a genericized trademark by court action in the United States in 1963, since it had become colloquially synonymous with vacuum flasks in general. However, there are other vacuum flasks. After the German glassblowers determined the commercial uses for the Dewar flask, the technology was sold to the Thermos company, who used it to mass-produce vacuum flasks for at-home use. Over time, title: Thermos L.L.C. text: Thermos L.L.C. Thermos L.L.C. is a manufacturer of insulated food and beverage containers and other consumer products. The original company was founded in Germany in 1904. In 1989, the Thermos operating companies in Japan, U.K, Canada and Australia were acquired by Nippon Sanso K.K., which had developed the world's first stainless steel vacuum bottle in 1978, before it renamed itself Taiyo Nippon Sanso Corporation, as which it remains known in the present day. Taiyo Nippon Sanso also acquired the original Thermos company in Germany. The word "thermos" is a genericized trademark used as a name for a vacuum flask. From title: Vacuum flask text: subsequently claimed both the rights to the commercial product and the trademark to the name. In his subsequent attempt to claim the rights to the invention, Dewar instead lost a court case to the company. The manufacturing and performance of the Thermos bottle was significantly improved and refined by the Viennese inventor and merchant Gustav Robert Paalen, who designed various types for domestic use, which he also patented, and distributed widely, through his Thermos Bottle Companies in the United States and Canada. The name later became a genericized trademark after the term "thermos" became the household name for such a