Famous Patents
3M employee and church chorister Art Fry needed something to temporarily mark pages in his hymnal. He was in luck because his colleague, Spencer Silver, accidentally developed a glue that was too weak for other purposes. After initially discouraging consumer response, Post-it Notes became a hit in 1979.
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| Number | Title | Issue Date |
| 5863652 | Tobacco smoke filter materials, fibrous cellulose esters, and production processes A tobacco smoke filter material comprises a fibrillated cellulose ester fiber with an average fiber diameter of 15 to 250 μm and a BET specific surface area of 0.5 to 4.5 m2 /g. The fibrous cellulose ester content of the material may for examp... | 01/26/1999 |
| 5813638 | Mixing bowl supporting assembly A supporting assembly for a mixing bowl is provided including a support having first and second opposing edges and at least one open end defining an interior space. First and second holding members are provided, each holding member covering at least a por... | 09/29/1998 |
| 5804621 | Polymeric composition A polymeric composition in which (D) a phenol antioxidant having a specific skeleton 5-t-butyl-3-methyl-4-hydroxyphenyl, (C) a hindered amine photostabilizer having a molecular weight of not less than 400, and (D) a specific phosphorus compound dihydrooxa... | 09/08/1998 |
| 5804296 | Cellulose ester compositions and shaped articles A composition comprises a cellulose acetate or other cellulose ester, and an anatase-type titanium oxide having (1) a specific surface area of not less than 30 m2 /g, (2) a primary particle size of 0.001 to 0.07 μm, or (3) a specific surface a... | 09/08/1998 |
