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 |
| 7275727 | Hanger for Christmas ornaments and other objects A hanger is formed as an open loop of an elastomeric material. The open loop includes an integral eyelet formed at one end and an integral latch formed at the opposite end. The latch is inserted through an orifice defined by the eyelet and is held in place by an int... | 10/02/2007 |
| 5810399 | Clamp for ground glass joint A clamp for securing ground-glass joints between first and second tubes, the first tube having a shoulder located inward of its end, intermediate the ground and unground portions thereof, adjacent the ground joint, and the second tube having an enlarged l... | 09/22/1998 |
| 5621950 | Spring biased paper clip A spring-loaded paper clip has a pair of plate elements which are hingedly connected together and which are provided with raised projections to improve gripping force so that the clip can hold large quantities of paper together without slipping or shiftin... | 04/22/1997 |
| 5094903 | Hanger for separating stored sheet material A hanger which includes two depending strips of resilient material interconnected at their upper margins by a flexible link which enables the hanger at its link to be placed over the upper marinal edge of a sheet of material with the strips straddling of ... | 03/10/1992 |
| 4280258 | Cable sleeve having a closable, longitudinal slit A cable sleeve, which has a closable, longitudinal slit and is a tubular member of shrinkable material, has a closure formed by a pair of overlapping edge portions, which extend along the longitudinal slit. The outer edge portion has a bead formed by a fo... | 07/28/1981 |
| 4189055 | Fixture for an elongated flexible member A fixture for a string, a band or the like, comprising at least two spaced vertical fixing portions and a horizontal connecting portion extending between the vertical fixing portions. The material, such as a string or a band, is helically wound or coiled ... | 02/19/1980 |
| 4148114 | High grip paper clip A paper clip incorporating metal wire inner and outer loops for strength is encapsulated by a resilient material to increase gripping power. In cross section the encapsulation is generally triangular, forming a gripping face and two ramp faces. The ramp f... | 04/10/1979 |
