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 |
| 8002234 | Device for forming concrete A device 10 for forming concrete includes a first form 12 dimensioned to surround substantially one-half of a predetermined object 13, such as a vertical column 13, from a preselected distance; a second form 14 dimensioned to surro... | 08/23/2011 |
| 7147197 | Concrete home building A system of building concrete homes and apartment buildings. The system creates a structure that is well insulated and that is very practical and economical to build. The system uses standard components such as wall ties, concrete forms, rigid foam insulation, and c... | 12/12/2006 |
| 7024831 | Concrete floor system and method of making floor components A concrete floor system used in a building structure and a method of making floor components used with the floor system. The concrete floor system, if installed on grade, provides for expansion and contraction due to expansive soils and eliminates cracks, which here... | 04/11/2006 |
| 6397535 | Height-adjustable concrete mold supporting system and method for constructing concrete building Disclosed are a height-adjustable concrete mold supporting system and a method for constructing concrete floors and concrete walls, by which a concrete building can be easily and precisely constructed with enhanced cost-effectiveness. The system has a bot... | 06/04/2002 |
| 6322046 | Form panel clamp A concrete form panel clamp includes a threaded rod having a first pin mounted at a first end generally perpendicular to the rod. A second pin spaced away from and generally parallel to the rod is slidably mounted on the rod. A nut threaded onto the rod s... | 11/27/2001 |
| 6317915 | Energy efficient deck framing system and method An energy efficient deck framing system and method is disclosed. In a deck framing system having structural framing members that support a deck panel structure, individual deck panels are inserted between pairs of the framing members. Supporting rods exte... | 11/20/2001 |
| 5676874 | Floor form assembly and apparatus used therewith A floor form assembly is adapted for use in the construction of a concrete floor of a structure that is enclosed by surrounding walls, and includes a plurality of mounting devices adapted to be mounted on the surrounding walls at a top portion of the stru... | 10/14/1997 |
| 5643487 | Beam and prop system for supporting concrete formwork A formwork frame for supporting decking and a fresh concrete floor on the decking includes a horizontal beam whose upper surface contacts the concrete and a vertical shaft that supports the beam. The beam is formed in three separable extruded aluminium se... | 07/01/1997 |
| 4880203 | Adjustable form brace A cradle for an adjustable brace used for supporting an elevated concrete form floor between support beams during the curing of the concrete is provided. The cradle is adapted to receive the upper portion of two legs such that the legs can pivot towards a... | 11/14/1989 |
| 4660800 | Bridge overhang bracket and hanger A hanger and bracket attached to the hanger for supporting formwork for steel and concrete during the curing stage of a bridge deck overhang is described. A hanger attached to the beam of the bridge supports a connector carrying the bracket. The connector... | 04/28/1987 |
| 4608005 | Clamping device A clamping device of this invention is constructed of bases on which molds are slidably moved, regulating portions each provided above the corresponding base and having a clamping surface which is inclined relative to the base, shifting means provided bes... | 08/26/1986 |
| 4450120 | Concrete form and method of assembling and dismantling the same A form for supporting from below a layer of concrete during pouring and hardening has several square or rectangular panels having neighboring marginal portions with downwardly extending reinforcing skirts which are separably connected to each other by bol... | 05/22/1984 |
| 4349491 | Method for forming a concrete deck The method for forming a concrete deck includes top adjustable removable hangers depending from opposed walls, beams or girders to support length adjustable ledgers, which ledgers support deck joists and decking associated therewith and upon which concret... | 09/14/1982 |
| 4348002 | Hanger for concrete deck forming apparatus Top adjustable removable hangers depend from opposed walls, beams or girders to support length adjustable ledgers, which ledgers support deck joists and decking associated therewith and upon which a concrete deck will be poured to form a slab supported up... | 09/07/1982 |
| 4342440 | Concrete deck forming apparatus Apparatus for forming a concrete deck includes top adjustable removable hangers depending from opposed walls, beams or girders to support length adjustable ledgers, which ledgers support deck joists and decking associated therewith and upon which a concre... | 08/03/1982 |
| 4254932 | Concrete wall forming system A concrete wall form includes a support structure comprising a beam capable of functioning as a stringer or stiffback and which includes a bolt holding channel, a nailer channel and an internal channel for telescopically receiving an extension splice. A t... | 03/10/1981 |
| 4231977 | Method and apparatus for in-situ production of concrete slabs A reinforced elongated concrete slab is progressively formed on longitudinal supports following the installation of the supports by mounting carriages for movement along the length of the supports, providing the carriages with a leading platform portion t... | 11/04/1980 |
| 4123031 | Improvements in concrete roadway-slab forming and form-elevation adjusting means Concrete-slab forming means and more particularly improvements in means for supporting and adjusting the elevation of the forms for concrete roadway slabs which bridge the space between spaced-apart pairs of in-place girders. The forming means per se comp... | 10/31/1978 |
