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 |
| 7044140 | Device for obtaining a hair-styling and a permanent An appliance for hairstyles and for applying a perm includes a flat portion (9); at least one anchorage device (8) formed on the inner surface (99) of the flat portion (9) for deflecting and anchoring a strand of hair. At least one fasten... | 05/16/2006 |
| 5810026 | Electric hair-curling apparatus The present invention features an electric, hair-curling apparatus. The hair curler is designed to prevent the heated wand from coming into unwanted contact with other surfaces and parts of the body. Its purpose is to prevent accidental injuries or burns ... | 09/22/1998 |
| 5664588 | Curling iron having skin protecting shield A shield for protecting the facial skin of a person using a heated curling iron that provides two pairs of sleeves cooperatively carried on the heating element and the clamp member of the curling iron so that the portion of hair to be curled may be wound ... | 09/09/1997 |
| 4791272 | PTC hair roller A heat generating curling implement includes a generally cylindrical body member about which hair may be wound and containing two heat radiating U-shaped plates with interlinking base portions with a positive temperature coefficient heating element sandwi... | 12/13/1988 |
