English scientist James Dewar invented vacuum bottle technology in 1892 to solve the problem of keeping gasses cold enough to remain liquid while he studied their properties. By sealing one glass bottle within another and removing the air between, Dewar created the first vacuum bottle, but failed to patent his invention. In 1907, the American Thermos Bottle Co. of Brooklyn acquired the patent and brand name of Thermos GmBH, the German company that had found a commerical market for vacuum bottles. In a tactic employed by other marketers of the early twentieth century, American Thermos worked to make its brand name part of common terminology as a synonym for "vacuum bottle." While the company would later regret treating its trademark quite so casually, the proliferation of Thermos-brand vacuum bottles at picnics, on the beach, and for other outdoor activities helped insure that insulated bottles of all types have been part of American family life and play for more than a century.