Celebrity Inventors
Glam girl Heddy Lamar may have used her good looks to good effect on the silver screen, but she put her smarts to better use as an inventor. During World War II, she co-patented a frequency-switching system for torpedo guidance that was considered years ahead of its time.
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| Number | Title | Issue Date |
| 7386215 | Projection system and light tunnel thereof A light tunnel includes a first optical element, a second optical element, a third optical element and a fourth optical element. The first optical element has a first recess. The second optical element is disposed opposite to the first optical element and has a seco... | 06/10/2008 |
| 7140741 | Color shifting retroreflector and method of making same Color shifting retroreflective articles can provide features such as decorative effects, evidence of tampering, security authentication or positional information. In some embodiments, the color shifting retroreflective article includes a layer of microspheres, and a... | 11/28/2006 |
| 6586067 | Encapsulated lens retroreflective sheeting Encapsulated-lens retroreflective sheeting is described which contains an improved binder layer. The binder layer is obtained from a film-forming mixture which comprises: (A) a vinyl chloride copolymer, (B) a thermoplastic polyurethane, and (C) an aminoplast r... | 07/01/2003 |
| 6487002 | Large area micro-structure template for creation of closely packed arrays A micro-structure template for fabricating ordered arrays of particles includes a top surface and a bottom surface, with the top surface having a plurality of closely-spaced depressions. Particles are disposed in the closely-spaced depressions to form at ... | 11/26/2002 |
| 6461718 | Retroreflective sheet To provide a retroreflective sheet which is suitable for co-molding by injection molding or the like, wherein the retroreflective sheet can be laid within a mold and molded with a resin to form a molded product, and, after molding, the sheet retains a sig... | 10/08/2002 |
| 6398369 | Surface covering intended to be used on marking coverings for roads, parking areas and the like Surface coverings for marking road surfaces are disclosed including elastic particles for application to the road surface, the elastic particles including a plurality of light reflectors such as glass beads or ceramic particles, which can also include var... | 06/04/2002 |
| 6327095 | Vehicle lamp and method for manufacturing the same To provide a vehicle lamp having a high quality lens and a method for manufacturing the same and make it possible to reliably separate a pre-molded lens member while being securely held in the movable die during composite lens molding in a multi-color mol... | 12/04/2001 |
| 6243201 | Retroreflective articles having polymer multilayer reflective coatings A retroreflective article that has a layer of optical elements and a multilayer reflective coating disposed on the optical elements. The reflective coating reflects light back into the optical elements so that it can be returned toward the light source. T... | 06/05/2001 |
| 6080340 | Machining techniques for retroreflective cube corner article and method of manufacture A method of machining a substrate to produce a cube corner element optical array. The method includes steps of directly machining a plurality of groove sets into a directly machinable substrate to form an array having a plurality of geometric structures i... | 06/27/2000 |
| 6074719 | Multi-layer compositions having a fluoropolymer layer A multi-layer article comprises a fluoropolymer layer comprising interpolymerized units derived from vinylidene fluoride, and a melt-processable, substantially non-fluorinated polymer layer comprising a polyamide, polyimide, polyurethane, or a carboxyl, a... | 06/13/2000 |
| 5910858 | Retroreflective sheeting with coated back surface The present invention provides a retroreflective sheeting having a front surface and a back surface, the retroreflective sheeting retroreflecting light entering through the front surface, wherein the retroreflective sheeting comprises encapsulated-lens re... | 06/08/1999 |
| 5882771 | Conformable embossable retroreflective sheeting The present invention provides a retroreflective sheeting including: optical elements arranged in substantially a monolayer; a spacing layer in which the optical elements are at least partially embedded; a specularly reflecting layer underlying the spacin... | 03/16/1999 |
| 5614286 | Conformable cube corner retroreflective sheeting Conformable cube corner retroreflective sheetings comprising a plurality of discrete cube corner segments which are conformably bonded together, each cube corner segment comprising a plastic body portion having a substantially planar front major surface a... | 03/25/1997 |
| 5610762 | Apparatus and method of making reflex molds Method and apparatus is disclosed for manufacturing a reflex mold wherein a flexible or bendable, thin plate is provided for use in the manufacturing process. A reflex prism assembly is clamped together and metal is applied over the surface of the prisms ... | 03/11/1997 |
| 5600484 | Machining techniques for retroreflective cube corner article and method of manufacture A method of machining a substrate to produce a cube corner element optical array. The method includes steps of directly machining a plurality of groove sets into a directly machinable substrate to form an array having a plurality of geometric structures i... | 02/04/1997 |
| 5585164 | Dual groove set retroreflective cube corner article and method of manufacture A retroreflective cube corner article which is a replica of a directly machined substrate in which a plurality of geometric structures including cube corner elements are machined in the substrate using only two sets of parallel grooves. At least two of th... | 12/17/1996 |
| 5436762 | Glass for an optical signalling device, the glass being fitted with non-catadioptric elements The invention relates to a glass for at least one signalling lamp, in particular for a motor vehicle. The glass includes a plurality of non-catadioptric elements that have the appearance of catadioptric needles but without performing the same function. At... | 07/25/1995 |
| 5171624 | Retroreflective microprismatic material and method of making same A microprism retroreflector material has a body portion with a planar front face and closely spaced microprisms extending thereacross in a plane spaced from and parallel to the front face. The microprisms are formed with three side surfaces disposed along... | 12/15/1992 |
| 4682852 | Reflective sheeting technology A reflex light reflector comprising a laminate of water-insoluble layers including an internal specular-reflecting metal layer sealed between water-insoluble layers and formed in situ by vapor deposition of metal to a sufficient thickness to constitute a ... | 07/28/1987 |
| 4653854 | Cellular reflex-reflecting sheeting A reflex-reflecting sheeting of a type having on the surface of the sheeting many isolated small compartments which are respectively hermetically sealed in the form of cells is characterized in the structure in which a support film comprises an upper laye... | 03/31/1987 |
| 4637950 | Delamination-resistant cellular retroreflective sheeting Cellular retroreflective sheeting, which comprises a base sheet of retroreflective elements and a polymeric cover film disposed in space relation from the base sheet by a network of narrow intersecting bonds that form hermetically sealed cells. The cover ... | 01/20/1987 |
| 4340273 | Retro-reflecting sheet material The specification relates to retro-reflectors of the type used for road signs and markers and vehicle license plates to make these objects more noticeable to road users after dark. In the invention, the surface of a metal substrate is made retro-reflectiv... | 07/20/1982 |
| 4293189 | Light reflecting device A light reflecting device comprising a light reflecting surface and fine spherical glass beads arranged in front of the reflecting surface. The device comprises a light transmitting layer covering the glass beads and having an outer surface which is not p... | 10/06/1981 |
| 4265938 | Retro-reflecting sheet material and method of making same The specification relates to retro-reflectors of the type used for road signs and markers and vehicle license plates to make these objects more noticeable to road users after dark. In the invention, the surface of a metal substrate is made retro-reflectiv... | 05/05/1981 |
| 4148561 | Method for producing improved retroreflective system for sign surfaces, and improved systems produced thereby A light retroreflective system essentially of the kind described in the U.S. Pat. No. 3,981,557, comprising a primary focusing transparent body having elliptical sections in planes perpendicular to a rotary symmetry axis of such body, and an equatorial zo... | 04/10/1979 |
| 4108536 | Retroreflective roadway surface marking tape material There is described a retroreflective road surface marking tape material of the type having retroreflective systems secured at its upper surface layer, and including new retroreflective systems of elongated and cross-sectionally uniform configuration. Ther... | 08/22/1978 |
| 4072403 | Retro-reflecting assembly A new method for producing retro-reflecting assemblies of the type comprising a transparent globule having an essentially part-spherical upper portion uncoated for light impingement, and a lower portion associated to a monolayer of focusing and reflective... | 02/07/1978 |
| 4049337 | Reflex reflecting system for road surface marking The disclosure describes, in the upwardly facing surface of a layer of material forming a traffic-regulating indicium on a road pavement, a reflective system consisting of a plurality of reflex-reflective aggregates consisting each of a main element of po... | 09/20/1977 |
| 4025159 | Cellular retroreflective sheeting Cellular retroreflective sheeting, which comprises a base layer of retroreflective elements and a transparent cover film supported in spaced relation away from the base layer by a network of narrow intersecting bonds that form hermetically sealed cells wi... | 05/24/1977 |
| 4012114 | High efficiency reflecting system, and method There is described an optical system suitable for use on highway pavements or marking indicia for ensuring nighttime visibility, and consisting of a transparent sphere, a transparent layer of a binding medium having a refractive index different from that ... | 03/15/1977 |
| 3981557 | Light retroreflective system for sign surfaces A light retroreflective system comprises a primary focusing transparent body having an exposed surface adapted to project externally of the surface of a sign forming material and operative for refracting and focusing light beams impinging on portions of s... | 09/21/1976 |
| 3964821 | Reflex reflecting system for road surface marking The disclosure describes new and improved reflex reflecting systems of the type comprising a spherical transparent lens having reflex reflective means arranged about it and secured relative thereto and optically associated therewith by means of a transpar... | 06/22/1976 |
| 3964820 | Retro-reflecting element and method There is described a retro-reflecting element of generally globular configuration adapted to retro-reflect a ray of light back along its own incident path, when impinged by grazing light on a part-spherical portion of its surface, bulging above the surfac... | 06/22/1976 |
