Did You Know...
...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7371339 | Prismatic retroreflector having a multi-plane facet A retroreflective structure includes a retroreflective sheeting having an array of transparent prisms formed into pairs of prisms. Each prism includes a base aperture and three intersecting lateral faces meeting at an apex. Each of the lateral faces includes a base ... | 05/13/2008 |
| 7182829 | Cube corner cavity based retroreflectors with transparent fill material Retroreflective sheeting includes a body layer having a structured surface with recessed faces forming cube corner cavities. A reflective film is disposed at least on the recessed faces, and a fill material fills the cube corner cavities. The fill material comprises... | 02/27/2007 |
| 7179406 | Method and apparatus for making reflective pavement marker An apparatus and a method are provided for fabricating a one-piece, polymeric raised reflective pavement marker. The apparatus includes a polished cavity segment which have an inclined angular disposition with respect to the mold base horizontal and vertical ... | 02/20/2007 |
| 7077600 | Multiple sensory road marking tape A roadway marking system, comprising a roadway marking tape and a plurality of spaced reflective roadway markers having a white reflective front surface, a red reflective rear surface and a elevated crest, is applied to an upper surface of a roadway. The roadway mar... | 07/18/2006 |
| 7037033 | Process of manufacturing one-piece reflective pavement marker and method of making A reflective pavement marker is used for delineating roadways, having at least one retro-reflective face, including a plurality of cube-corner reflective elements. The marker may comprise two similar portions agglutinated to each other along a vertical back wall of ... | 05/02/2006 |
| 7025528 | Multi-sided unitary body for reflective pavement marker Improved multi-sided reflective pavement marker is disclosed having an integrally molded hollow structural body and two retro-reflective lens means for attachments. The lens means integrally includes retro-reflective cube corner elements within cell like area... | 04/11/2006 |
| 7018131 | Long life intelligent illuminated road marker Self-contained solar-powered long-life intelligent illuminated road markers are provided comprising a one-piece housing formed of optionally colored plastic capable of transmitting light. Light is reflected by reflective coating or generated internally by LED which ... | 03/28/2006 |
| 6861134 | Retroreflective articles of nanoporous construction and method for the manufacture thereof A retroreflective article comprises a) a microporous substrate (52) containing a plurality of pores (56) which are less than 0.5 μm in diameter; and b) a layer of reflective material (54) located on the surface (58) of the substrate such... | 03/01/2005 |
| 6758567 | One-piece reflective marking sheet A continuously formed, low profiled reflective pavement marker comprising a multiple, inclined, low profiled reflective portions, which are integrally connected by horizontally, positioned reflective sheeting. Each raised reflective portion integrally having multipl... | 07/06/2004 |
| 6726398 | Road sign device and spontaneously emitted light sign system used for the device A road marking device comprises: a tubular, bottomed casing which has an open top end; a cover mounted over an opening in the casing and having a window; a self-luminous marking system composed of a condenser housed in the casing, an illuminant which emits light by ... | 04/27/2004 |
| 6656566 | Retroreflective luminescent articles Sheeting material is disclosed that contains a retroreflective layer and a layer of luminescent material on the bottom or lower surface of the retroreflective layer. The sheeting material can be formed into signage or decorative articles that are highly v... | 12/02/2003 |
| 6626544 | Prismatic retroreflector having a multi-plane facet A retroreflective structure includes a retroreflective sheeting having an array of transparent prisms formed into pairs of prisms. Each prism includes a base aperture and three intersecting lateral faces meeting at an apex. Each of the lateral faces inclu... | 09/30/2003 |
| 6572305 | Reflective pavement marker A reflective pavement marker includes a shell having a top wall, a side wall extending from an end of the top wall, and reflective end walls extending from an other end of said top wall, wherein the shell forms an interior cavity. The reflective pavement ... | 06/03/2003 |
| 6568817 | Retroreflecting sheet having printed layer Retroreflective sheeting comprising at least a reflective element layer made up of a large number of reflective elements and a holding body layer and a surface protective layer provided on the reflective element layer, wherein a printed layer is provided ... | 05/27/2003 |
| 6551014 | Raised pavement marker with improved lens The present disclosure relates to improved raised pavement markers having a totally-internal-reflective lens. The disclosure also relates to methods of manufacturing the raised pavement marker. The raised pavement markers described below include a housing... | 04/22/2003 |
| 6451408 | Retroreflective article A retroreflective article that exhibits suitable retroreflective luminance under dry and dynamic wet conditions. The article includes an enclosed-lens retroreflective sheeting that, under dry conditions, exhibits a coefficient of retroreflective luminance... | 09/17/2002 |
| 6413615 | Cube corner geometric structures in a substrate formed by both replicating and machining processes A cube corner article having a structured surface of geometric structures, each geometric structure having a plurality of faces at least some of which are arranged as a cube corner element, is made by providing a first substrate having a plurality of groo... | 07/02/2002 |
| 6282026 | Retroreflectors having two optical surfaces and varying retroreflectivity Retroreflective articles provide varying retroreflection using a first surface that includes a plurality of light redirecting structures and a second surface that includes retroreflective areas and separation areas. The light redirecting structures on the... | 08/28/2001 |
| 6168276 | Road safety reflector A road safety reflector assembly has a pair of oppositely disposed finger cradles with a hollow, reinforceable housing, which has one or two reflectors mounted therein.... | 01/02/2001 |
| 6139158 | Retroreflective articles with multiple size prisms in multiple locations Retroreflective sheeting and articles are formed in which the size of the retroreflective and non-retroreflective surfaces may be varied across an array of microprisms. This is accomplished by varying the location of the reflective coating applied to the ... | 10/31/2000 |
| 6127020 | Method of making wet retroreflective marking material A method of making a retroreflective marking material is provided, the method has the steps of: (a) providing an enclosed-lens retroreflective sheet having a top surface and a bottom surface and comprising a cover layer and a monolayer of retroreflective ... | 10/03/2000 |
| 6055108 | Imaging articles and methods using dual-axis retroreflective elements Imaging articles and methods are disclosed that use dual-axis retroreflective elements such as 90 degree prisms and linear lenticular elements in which the imaging is either superimposed on the imaged object or displaced therefrom. If the imaging is super... | 04/25/2000 |
| 5981113 | Curable ink composition and imaged retroreflective article therefrom Radiation curable ink compositions and coating compositions contain an aliphatic (meth)acrylate functional macromonomer, a reactive acrylate monomer, and a photoinitiator. Ink compositions also contain an effective amount of a colorant or pigment. These i... | 11/09/1999 |
| 5946134 | Raised structure retroreflective article A cube corner article and method of manufacturing the article from a series of directly machinable unitary substrates. The method of manufacture comprises the first step of providing an initial unitary directly machinable substrate of material suitable fo... | 08/31/1999 |
| 5903391 | Optical film An optical film having high light transmittance and excellent light diffusibility is provided. The optical film comprises a transparent substrate 1 and a light diffusion layer 2 formed on one or both sides of the substrate 1. As the resin 3 of the light d... | 05/11/1999 |
| 5854709 | Chameleonic cube corners A retroreflector construction comprises a first transparent layer of a relatively high refractive index having on its rear surface one or more cube corner retroreflector elements; a second thin transparent layer of relatively low refractive index in subst... | 12/29/1998 |
| 5835271 | Encased retroreflective elements and method for making A retroreflective element that exhibits exceptional wet retroreflectivity, and a method of manufacturing the same. The retroreflective element includes an assembly having a multi-sided retroreflector and a clear thermoplastic. In one embodiment, the clear... | 11/10/1998 |
| 5831767 | Asymmetric cube corner article A cube corner article has a plurality of geometric structures formed by at least three intersecting groove sets. Each geometric structure has three faces arranged as a cube corner element. Some of the geometric structures also have a fourth face which is ... | 11/03/1998 |
| 5812316 | Method for making retroreflective sheeting A method for making retroreflective sheeting comprising the steps of placing a light-transmittable protective film on glass beads in a support sheet which consists of a binder layer and a reinforcing layer, and which is provided with retroreflective glass... | 09/22/1998 |
| 5759671 | Ultraviolet luminescent retroreflective sheeting Ultraviolet luminescent retroreflective sheeting includes a retroreflective portion containing retroreflective elements and an ultraviolet luminescent portion to facilitate nighttime viewing by persons not located at or near a source of light being retror... | 06/02/1998 |
| 5657162 | Retroreflective articles with multiple size prisms in multiple locations Retroreflective sheeting and articles are formed in which the size of the retroreflective and non-retroflective surfaces may be varied across an array of microprisms. This is accomplished by varying the location of the reflective coating applied to the mi... | 08/12/1997 |
| 5501545 | Retroreflective structure and road marker employing same A retroreflective structure and a method for forming the structure are disclosed. The structure has a window side and a facet side. The facet side has a plurality of steps with treads and risers intersecting at an angle. The risers include an array of ret... | 03/26/1996 |
| 5442870 | Reflective sign A retro-reflective sign is provided having a front face member attached to a back member. The face member has a plurality of cube corners disposed along its back surface. The sign can be of any shape or color and provides superior light reflection at nigh... | 08/22/1995 |
| 5417515 | Retroreflective article with dual reflector A retroreflective article and a method for making same are taught. The retroreflective article comprises transparent microspheres and both specular and diffuse reflective pigments dispersed in a binder layer. The utilization of both types of pigments resu... | 05/23/1995 |
| 5223312 | Multiple retroreflective striping method and structure Reflective tape for pinstriping of automobiles or other vehicles. The tape has strips of retroreflective material sandwiched between a bottom release liner of polyethylene coated paper and a clear top release liner having an adhesive undersurface for reta... | 06/29/1993 |
| 5104256 | Low profile pavement marker A low profile pavement marker (30) for bonding to a pavement with an adhesive for marking traffic lanes and areas is described. The marker has a smooth upper reflective surface (36) which scatters overhead light in all horizontal directions for daytime vi... | 04/14/1992 |
| 5002424 | Reflective pavement marker with inclined reinforcing ribs A reflective pavement marker of the type having a shell-like housing of synthetic resin or other moldable material with reflective end walls of light transmitting material and a filler of epoxy or other potting material. Ribbing is formed on the inner sur... | 03/26/1991 |
| 4875799 | Traffic lane marking device A night-visible traffic lane marking device for aircraft landing and takeoff strips, roadways and the like. The markers are installed embedded into the lane with their upper surfaces flush with the traffic surface. Reflective, fluorescent or phosphorescen... | 10/24/1989 |
| 4875798 | Retroreflective pavement marker A raised retroreflective pavement marker that provides both improved retroreflectivity and longer life has a rigid opaque, synthetic resin body having at its front face septa to which a plastic cube-corner reflector has been bonded to provide a plurality ... | 10/24/1989 |
| 4726706 | Reflective pavement marker A retro-reflective roadway marker is generally comprised of a one-piece housing, having integrally molded retro-reflective faces. The reflective faces having outside surfaces with abrasing reducing raised members and inside surfaces of light reflecting element... | 02/23/1988 |
