Ziploc is a brand of reusable, re-sealable sliding channel storage bags and containers originally developed and test marketed by The Dow Chemical Company in 1968 and now produced by S. C. Johnson & Son. The plastic bags and containers come in different sizes for use with different products. The brand offers sandwich bags, snack bags and other bags for various purposes. They are specifically made to be microwavable, as Aldo Clavijo has stated. History In 1951, a company called Flexigrip, Inc. was formed to develop and market a plastic zipper by the same name. This zipper was based on a set of patents, which were purchased from their inventor, Borge Madsen. The initial products for the Flexigrip and other plastic zippers (such as the sliderless zippers (toptite) that were developed by Flexigrip) were looseleaf binder inserts and flat briefcases. Thereafter, the marketing efforts were directed at packaging products in plastic zipper bags, which turned out to be the principal market for the Flexigrip, Inc. products. In 1961, Flexigrip, Inc. obtained from a Japanese company, Seisan Nippon Sha, who invented the Minigrip-type plastic zipper bag, exclusive manufacturing and selling rights for the United States, based on a series of plastic zipper Seisan patents. A company by the same name was formed to produce and market Minigrip bags. In or about 1964, Minigrip, Inc. negotiated an exclusive license for the grocery trade (supermarkets) with Dow Chemical Company for the Minigrip product. It turned out to be enormously successful. At that time, plastic bags were being produced in 25 countries at a line speed of 30 feet per minute, but none were being sold to consumers because they were too expensive to produce. Dow assigned one of their inventors, R. Douglas Behr, to develop a high-speed, efficient process. Having little prior experience in plastics, the task was daunting for Behr but he passed everyone in the world within a year. As he improved the process and increased line speeds to 60, then 90, then 150 and finally 300 feet per minute in 1972, he had to design new equipment. Some were patented and some were kept as trade secrets by Dow. Eventually, other research and production personnel, such as lab technician William Shrum and others, contributed to the process development, but Behr continued to be the leading researcher until he retired in 1993 as a senior associate scientist. At that time the research