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 |
| 5367278 | Magnet holding structure A magnet holding structure comprising a magnet holder for holding a permanent magnet and a mounting frame formed integrally with a container such as a plastic basket for holding the magnet holder, the mounting frame including at least one pair of projecti... | 11/22/1994 |
| 5333767 | Wrist mounted magnetic holder A wrist mounted magnetic holder for small articles such as screws, nails, bolts, drill bits and the like having a non-ferrous material housing with a ceramic magnet polarized into two distinct regions and a flux concentrator for increasing the magnetic fl... | 08/02/1994 |
| 5196818 | Wrist mounted magnetic holder A wrist mounted magnetic holder for small articles such as screws, nails, bolts, drill bits and the like having a non-ferrous material housing with a ceramic magnet polarized into two distinct regions and a flux concentrator for increasing the magnetic fl... | 03/23/1993 |
| 4838426 | Combination of needle case and needle threader for needlework A needle case for needlecraft work has a magnet on one side to allow the case to be held on the magnet board. The magnet holds the case for mounting but does not hold the needles within the case. A needle threader has a flat threader that can be inserted ... | 06/13/1989 |
| 4664302 | Threaded needle holder for needle craft projects A threaded needle holder for needle craft projects is disclosed. The needle holder is made up of a rectangular card with a magnet parallel to one long edge of the card. A plurality of slits spaced along the long edge act to receive thread carried by needl... | 05/12/1987 |
| 3982631 | Dispensing case for needles or the like A dispenser container wherein magnetizable needles, tools, or the like, are mounted upon a magnet element secured pivotally to the interior of the container by means of a fabric hinge. The pivoting motion of the magnetic bar is produced by the alternating... | 09/28/1976 |
| 3933286 | Pin cushion and method of making same A pin cushion and a simple method for making same are disclosed, the pin cushion being adapted to conveniently engage the wrist or arm of a wearer and having protective side walls engaging the cushion material. The pin cushion is formed by heating and ben... | 01/20/1976 |
