Wikipedia
Post-it note
A Post-it note is a piece of stationery with a re-adherable strip of adhesive on the back, designed for temporarily attaching notes to documents and to other surfaces: walls, desks, computer displays, and so forth. While now available in a wide range of colors, shapes, and sizes, Post-it Brand notes are most commonly a square, canary yellow in color. The notes use a unique low-tack adhesive that enables Post-it Brand notes to be easily attached and removed without leaving marks or residue, unless used on white boards.
It was invented by 3Ms Art Fry using an adhesive developed by a colleague, Spencer Silver. Until the 1990s, when the patent expired, Post-it Brand notes were only produced in the 3M plant in Cynthiana, Kentucky. Although other companies now produce sticky or repositionable notes, most of the worlds Post-it Brand notes are still made in Cynthiana.
The term "Post-it" and the canary yellow color are trademarks of 3M. Accepted generic terms for competitors include "sticky notes", "repositionable notes", and "repositional notes." 3M manufactures other products related to the Post-it Brand note concept, leveraging the success of the brand. Computerized versions of Post-it Brand notes include 3Ms own "Post-it Brand Software Notes," and Apples "Stickies."
History
In 1968, Dr. Spencer Silver, a scientist at 3M in the United States, with the help of Jesse Kops, a fellow scientist, accidentally developed a "low-tack", reusable pressure sensitive adhesive. For five years, Silver promoted his invention within 3M, both informally and through seminars, but without much success. In 1974, a colleague of his, Art Fry,
who had attended one of Silvers seminars, came up with the idea of using the adhesive to anchor his bookmark in his hymnbook."useful"> Fry then developed the idea by taking advantage of 3Ms officially sanctioned "permitted bootlegging" policy."useful" /> 3M launched the product in 1977, but it failed as consumers had not tri read more at » http://en.wikipedia.org/wiki/Post-it+note