In 1608, Dutch eyeglass maker Hans Lipperhey filed the first patent for a working telescope. The patent was denied.
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| Number | Title | Issue Date |
| 8166722 | Modular floor tile system with transition edge The present invention provides a modular flooring system including a ramp to facilitate entry and exit from the flooring system. The ramp may be modular and interconnect with all or parts of a perimeter of the flooring system, and the ramp may also interconnect with... | 05/01/2012 |
| 8156705 | Groutless tile system and method for making the same A groutless tile system including groutless tiles, wherein each groutless tile includes a substrate, a durable surface disposed within a groove defined by the substrate, the durable surface having bottom surface, and a first coupling member disposed on an edge of th... | 04/17/2012 |
| 8146318 | Building panels Flooring material comprising sheet-shaped floor elements with a mainly square or rectangular shape. The floor elements are provided with edges, a lower side and an upper decorative layer. The floor elements are intended to be joined by means of joining members. The ... | 04/03/2012 |
| 8141313 | Interlocking roofing panel system A roofing system includes a plurality of roofing panel assemblies. Each roofing panel assembly includes a base having a substantially planar surface, a plurality of I-joists having an upper flange and a lower flange, wherein the base is attached to the lower flanges... | 03/27/2012 |
| 8136324 | Snap-fit pultrusion for housing elements The invention provides snap fit pultrusion housing elements for joining structurally insulated panels suitable for housing and shelter construction. The housing elements include a pultruded panel body member having at least one edge, and a pultruded snap lock fittin... | 03/20/2012 |
| 8099924 | Panel, in particular floor panel A panel, in particular a floor panel, includes a core of a wood material or wood material/plastic mixture. The panel includes a top side and an underside. The panel has a profile corresponding to one another on at least two side edges (I, II) lying opposite one anot... | 01/24/2012 |
| 8096092 | Lightweight structural panel What is described is a lightweight structural panel which comprises a planarly extended outer skin of given thickness and stiffening elements which are connected to this outer skin and are arranged at a given distance from one another. According to the invention, th... | 01/17/2012 |
| 8082717 | Panel, in particular floor panel The invention relates to a panel having means for the detachable connection of adjacent panels by means of pivoting, the means provided comprising, on a first edge, a projecting tongue (3) with a lower and upper tongue surface (4, 5) which divides the ... | 12/27/2011 |
| 8069629 | Process for manufacturing insulated siding A siding panel assembly includes an ornamental facing and a first insulation layer made from fibrous insulating material. That fibrous insulating material includes polymer fibers and glass fibers, polymer fibers, natural fibers and mixtures thereof. A method for mak... | 12/06/2011 |
| 8046969 | Roofing panel assembly A roofing panel assembly is made of a base and a cap as well as a plurality of I-joists having an upper flange, a lower flange and a web. The base is attached to the lower flanges of one or more of the plurality of I-joists and the cap is attached to the upper flang... | 11/01/2011 |
| 8028486 | Floor panel with sealing means Floor panels and floor elements therefore are made of sheet-shaped cores which before application of the surface of the floor panels are formed with sealing means for counteracting changes in the properties of the floor panels caused by moisture. ... | 10/04/2011 |
| 8011155 | Locking system for mechanical joining of floorboards and method for production thereof A locking system for mechanical joining of floorboards (1, 1′) which have a body (30), a lower balancing layer (34) and an upper surface layer (32). A strip (6) is integrally formed with the body (30) of the floorboard ( | 09/06/2011 |
| 7984600 | Groutless tile system and method for making the same A groutless tile system including: a plurality of groutless tiles, wherein each groutless tile includes: a durable surface disposed on a substrate; and a first coupling member disposed on an edge of the substrate; wherein at least a portion of the substrate extends ... | 07/26/2011 |
| 7980043 | Panels with coupling means The invention relates to panels comprising coupling means which permit the panels to be interconnected by form fit. A first panel comprises a projecting edge positioned laterally on its underside as the coupling element. A second panel comprises a projecting edge po... | 07/19/2011 |
| 7895807 | Segmented composite panel with false joints A building panel includes a facer sheet having opposed side joints, a liner sheet, a core material bonded between the facer and liner sheets, and at least one false joint formed in the facer sheet extending between the side joints such that the facer sheet is a cont... | 03/01/2011 |
| 7895806 | Interlocking wall sections for refrigerated enclosures Interlocking insulated wall sections (20-24), each of which contains a shell (30) having an outer panel (33) and a pair of end walls (35-36). A cover (31) is having an inner panel (38) and two end walls (39 | 03/01/2011 |
| 7886497 | Floorboard, system and method for forming a flooring, and a flooring formed thereof A system for forming a flooring includes rectangular floorboards (1, 1′) including first and second types of floorboards (A, B), on which first and second locking devices are arranged in pairs on opposing short edges (5a, 5b) and... | 02/15/2011 |
| 7866111 | Profiled rail and floorboard for flooring system Floor laying system for joining together floorboards, including grooves made in opposing side edges of the boards, and a separate profiled rail, which is disposed between the side edges of the boards and couples together the boards and which has legs projecting to o... | 01/11/2011 |
| 7861483 | Floor panel with the tongue more elastic than the locking element The invention relates to a panel, with a tongue on a longitudinal and a transverse edge, projecting beyond said longitudinal or transverse edge, with essentially parallel tongue surfaces and a groove on the opposing longitudinal or transverse edge, enclosed by later... | 01/04/2011 |
| 7856785 | Floor panel with a tongue, groove and a strip A thin rectangular laminate floor panel with one pair of long edges and one pair of short edges, the floor panel having an upper decorative wear layer; a core layer arranged beneath the upper decorative wear layer, the core layer being made of a material that is not... | 12/28/2010 |
| 7823359 | Floor panel with a tongue, groove and a strip Floorboards with substantially planar and parallel upper top sides and lower undersides and panel material located between the upper and lower top sides, and a mechanical locking system for locking a first edge of a first floor board to a second edge of a substantia... | 11/02/2010 |
| 7779597 | Floor covering Hard panels formed from a wood-based material and having a decorative layer for floor coverings are provided, at least on two opposite edges, with coupling devices made in one piece with the panels wherein similar panels may be coupled together to form a floor cover... | 08/24/2010 |
| 7779596 | Locking system for mechanical joining of floorboards and method for production thereof The invention relates to a locking system for mechanical joining of floorboards (1, 1′) which have a body (30), a lower balancing layer (34) and an upper surface layer (32). A strip (6) is integrally formed with the body (30) of ... | 08/24/2010 |
| 7762035 | Floor panel and floor covering composed of such floor panels Floor panel in a board shape having at least at two opposite edges coupling parts enabling several of the panels to be coupled to each other, wherein the coupling parts have contact portions forcing the floor panels in the coupled condition with a tension force at l... | 07/27/2010 |
| 7757453 | Floor panels with edge connectors Floor covering, including hard floor panels which, at least at the edges of two opposite sides, are provided with coupling parts, cooperating which each other, substantially in the form of a tongue and a groove, wherein the coupling parts are provided with integrate... | 07/20/2010 |
| 7726089 | Floor panels with edge connectors Floor covering, including hard floor panels which, at least at the edges of two opposite sides, are provided with coupling parts, cooperating which each other, substantially in the form of a tongue and a groove, wherein the coupling parts are provided with integrate... | 06/01/2010 |
| 7716896 | Floorboards, flooring systems and method for manufacturing and installation thereof Floorboards with a format corresponding to a traditional parquet block for laying of mechanically joined floating flooring. Rectangular floorboards include a surface layer and a core with two long sides and two short sides, for making a floating flooring, which floo... | 05/18/2010 |
| 7712280 | Floor panels with edge connectors Floor covering, including hard floor panels which, at least at the edges of two opposite sides, are provided with coupling parts, cooperating which each other, substantially in the form of a tongue and a groove, wherein the coupling parts are provided with integrate... | 05/11/2010 |
| 7707792 | Flooring system with grout line A flooring panel includes a decorative upper surface and a lower surface. The flooring panel further includes a plurality of edges extending between the decorative upper surface and the lower surface. The plurality of edges are shaped and dimensioned for selective c... | 05/04/2010 |
| 7698869 | Floor panels with edge connectors Floor covering, including hard floor panels which, at least at the edges of two opposite sides, are provided with coupling parts, cooperating which each other, substantially in the form of a tongue and a groove, wherein the coupling parts are provided with integrate... | 04/20/2010 |
| 7698868 | Floor panels with edge connectors Floor covering, including hard floor panels which, at least at the edges of two opposite sides, are provided with coupling parts, cooperating which each other, substantially in the form of a tongue and a groove, wherein the coupling parts are provided with integrate... | 04/20/2010 |
| 7681371 | Floor panels with edge connectors Floor covering, including hard floor panels which, at least at the edges of two opposite sides, are provided with coupling parts, cooperating which each other, substantially in the form of a tongue and a groove, wherein the coupling parts are provided with integrate... | 03/23/2010 |
| 7677008 | Floor panels with edge connectors Floor covering, including hard floor panels which, at least at the edges of two opposite sides, are provided with coupling parts, cooperating which each other, substantially in the form of a tongue and a groove, wherein the coupling parts are provided with integrate... | 03/16/2010 |
| 7673431 | Floor panels with edge connectors Floor covering, including hard floor panels which, at least at the edges of two opposite sides, are provided with coupling parts, cooperating which each other, substantially in the form of a tongue and a groove, wherein the coupling parts are provided with integrate... | 03/09/2010 |
| 7669376 | Floor panels with edge connectors Floor covering, including hard floor panels which, at least at the edges of two opposite sides, are provided with coupling parts, cooperating which each other, substantially in the form of a tongue and a groove, wherein the coupling parts are provided with integrate... | 03/02/2010 |
| 7665266 | Floor panels with edge connectors Floor covering, including hard floor panels which, at least at the edges of two opposite sides, are provided with coupling parts, cooperating which each other, substantially in the form of a tongue and a groove, wherein the coupling parts are provided with integrate... | 02/23/2010 |
| 7665265 | Floor panels with edge connectors Floor covering, including hard floor panels which, at least at the edges of two opposite sides, are provided with coupling parts, cooperating which each other, substantially in the form of a tongue and a groove, wherein the coupling parts are provided with integrate... | 02/23/2010 |
| 7665267 | Floor panels with edge connectors Floor covering, including hard floor panels which, at least at the edges of two opposite sides, are provided with coupling parts, cooperating which each other, substantially in the form of a tongue and a groove, wherein the coupling parts are provided with integrate... | 02/23/2010 |
| 7665268 | Floor panels with edge connectors Floor covering, including hard floor panels which, at least at the edges of two opposite sides, are provided with coupling parts, cooperating which each other, substantially in the form of a tongue and a groove, wherein the coupling parts are provided with integrate... | 02/23/2010 |
| 7661238 | Floor panels with edge connectors Floor covering, including hard floor panels which, at least at the edges of two opposite sides, are provided with coupling parts, cooperating which each other, substantially in the form of a tongue and a groove, wherein the coupling parts are provided with integrate... | 02/16/2010 |