Did You Know...
...that while attempting to develop a super strong glue, 3M employee Spencer Silver accidentally developed a glue that was so weak it would barely hold two pieces of paper together? However, his colleague Art Fry needed the glue. Fry sang with his church choir and marked the pages of his hymnal with small scraps of paper that often fell out. He used Silver's glue to hold the papers in place. Today we call this invention Post-it Notes.
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| Number | Title | Issue Date |
| 7704011 | Structural module A sub-base layer for use in construction, comprises a plurality of connected substantially cuboid modules each having spaced-apart, substantially parallel top and bottom walls joined by a peripheral sidewall defining an enclosed volume. The connection between the mo... | 04/27/2010 |
| 7404690 | Temporary road element A road element is formed of a one-piece cage that includes two layers of orthogonally arranged rebars which are welded together. The layers are connected by connecting rebars that are welded to the rebars of the layers at the intersections and the one-piece cage is ... | 07/29/2008 |
| 7344334 | Paver system A paver system comprising a plurality of paver pieces and at least one substrate. Each of the paver pieces has a top surface and a bottom surface. The bottom surface of the paver pieces is configured for mating with the upper surface of the substrate, whereby paver ... | 03/18/2008 |
| 7270497 | Paving element A cluster of paving elements is formed with a peripheral edge having a re-entrant formation formed between the upper supporting surface and the lower, supported surface. The formation engages a complimentary formation on an adjacent cluster to inhibit relative movem... | 09/18/2007 |
| 7168884 | Reinforced permeable paving structure A paving structure (11) of the type having an upper wear layer (12) and an underlying sub-base layer (15) of rigid insoluble hard particulate material forming voids for the collection of water permeating through the permeable surface where layer... | 01/30/2007 |
| 7160052 | Paving system using arrays of vertically interlocking paving blocks A continuous covered area, such as a sidewalk or patio, is formed by vertically interlocking tessellated components. One embodiment, termed PORTAPAVE™, achieves this interlocking via an array of uniquely configured two-sectioned pavers. Each paver has a first sect... | 01/09/2007 |
| 7121575 | Motorcycle trailer A motorcycle trailer with an aerodynamic storage compartment and a two-wheel independent suspension. Swing arm suspensions for the wheels include swing arms pivotally mounted to the trailer above the wheel axle, wherein the swing arms are supported by wheel suspensi... | 10/17/2006 |
| 7004674 | Pre-fabricated warped pavement slab, forming and pavement systems, and methods for installing and making same A pre-fabricated warped pavement slab and a forming system for making the slabs. The forming system includes a plurality of forming sections which can be adjusted so as to form a warped-plane pavement slab. Also disclosed are methods for making the pavement slab and... | 02/28/2006 |
| 6942420 | Ground covering elements of artificial stone material The invention relates to an artificial stone floor element with a basic shape that corresponds to the combination of a plurality of square basic elements, especially to an angular floor element. The floor element includes projections and recesses along its periphera... | 09/13/2005 |
| 6726400 | Vehicle arresting bed systems Vehicle arresting beds, for installation at the ends of aircraft runways, are effective to safely decelerate aircraft entering the bed. The arresting bed is assembled of a large number of blocks of cellular concrete having predetermined compressive gradient strength... | 04/27/2004 |
| 6709192 | Method of forming, installing and a system for attaching a pre-fabricated pavement slab to a subbase and the pre-fabricated pavement slab so formed A pre-fabricated pavement slab having a binder distribution system and an interconnection system formed for attachment of the bottom surface of the slab, wherein both the binder distribution system and the interconnection system are accessible from the top surface o... | 03/23/2004 |
| 6663315 | Method and forming, installing and a system for attaching a pre-fabricated pavement slab to a subbase and the pre-fabricated pavement slab so formed A pre-fabricated pavement slab having a binder distribution system and an interconnection system formed for attachment of the bottom surface of the slab, wherein both the binder distribution system and the interconnection system are accessible from the to... | 12/16/2003 |
| 6607329 | Method of forming, installing and a system for attaching a pre-fabricated pavement slab to a subbase and the pre-fabricated pavement slab so formed A pre-fabricated pavement slab having a binder distribution system and an interconnection system formed for attachment of the bottom surface of the slab, wherein both the binder distribution system and the interconnection system are accessible from the to... | 08/19/2003 |
| 6146054 | Lightweight embankment The lightweight embankment (1) comprises blocks (3) stacked in successive layers, the blocks of the same layer being separated by gaps (7). The blocks can in particular be made of expanded polystyrene. Application to embankments to support roads.... | 11/14/2000 |
| 5885025 | Vehicle arresting bed systems Vehicle arresting beds, for installation at the ends of aircraft runways, are effective to safely decelerate aircraft entering the bed. The arresting bed is assembled of a large number of blocks of cellular concrete having predetermined compressive gradie... | 03/23/1999 |
| 5496129 | Frangible interlocking paving stone A paving stone (10) is provided which includes individual sectors (20, 30) of uniform size and shape. Each sector (20, 30) is joined together to form a unique pattern such as a cross-paver (10), a Z-paver (110) or an S-paver (210). Some sectors (20, 30) a... | 03/05/1996 |
| 5342141 | Movable surface paving apparatus and method for using the same A surface paving apparatus (10) and a method for using the apparatus is disclosed herein. The apparatus is comprised of a mesh material (12) having parallel ribs (14) attached, laid upon a surface to be paved. A paving material (16) with grooves (24) cut ... | 08/30/1994 |
| 5251997 | Embeddable paving block intended for the surfacing of roadways and other areas of ground and the roadways or other areas of ground which are surfaced with such paving blocks The embeddable paving block intended for surfacing roadways and other areas of ground, of the type including four identical arms disposed at right-angles to one another, each of the arms having shoulders distributed over the lateral faces and the ends of ... | 10/12/1993 |
| 5184917 | Method of hydrocarbon decontamination The method of treating a waste liquid or solid hydrocarbon to reduce risk of environmental contamination by the waste hydrocarbon, that includes forming a flowable cementitious paste of Portland cement and additives; introducing the hydrocarbon into the m... | 02/09/1993 |
