Did You Know...
...that the Slinky toy was the result of a failed attempt by engineer Richard James to produce an antivibration device for ship instruments? His goal was to develop a spring that would instantaneously counterbalance the wave motion that rocks a ship at sea. Instead, he developed the Slinky.
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 |
| 7947616 | Pavement marking, reflective elements, and methods of making microspheres Presently described are retroreflective articles, such as pavement markings, that comprise transparent microspheres partially embedded in a (e.g., polymeric) binder. Also described are (e.g., glass-ceramic) microspheres, methods of making microspheres, as well as co... | 05/24/2011 |
| 7745360 | Pavement marking, reflective elements, and methods of making microspheres Presently described are retroreflective articles, such as pavement markings, that comprise transparent microspheres partially embedded in a (e.g., polymeric) binder. Also described are (e.g., glass-ceramic) microspheres, methods of making microspheres, as well as co... | 06/29/2010 |
| 7585799 | Microspheres having a high index of refraction The present disclosure relates to microspheres (i.e., beads) having a high index of refraction. The disclosure also relates to retroreflective articles, and in particular pavement markings, comprising such microspheres. ... | 09/08/2009 |
| 7579293 | Pavement marking, reflective elements, and methods of making microspheres Presently described are retroreflective articles, such as pavement markings, that comprise transparent microspheres partially embedded in a (e.g., polymeric) binder. Also described are (e.g., glass-ceramic) microspheres, methods of making microspheres, as well as co... | 08/25/2009 |
| 7524779 | Microspheres having a high index of refraction The present invention relates to microspheres (i.e., beads) having a high index of refraction. The invention also relates to retroreflective articles, and in particular pavement markings, comprising such microspheres. ... | 04/28/2009 |
| 7312168 | Glass beads and uses thereof In one aspect, the invention provides glass beads and optical devices comprising the glass beads. In other aspects, the invention provides methods of making said glass beads and rapid glass screening methods that use glass beads. Glass beads of the invention compris... | 12/25/2007 |
| 7144633 | Glass compositions Disclosed are glass compositions, glass fiber compositions, glass fiber battery separators, glass fiber filter media, battery additives and active materials formed with glass compositions disclosed, glass fiber radiation shields, and glass fiber paper compositions. ... | 12/05/2006 |
| 7045475 | High refractive index glass beads for high retroreflectivity surfaces Glass formulations, and a method of converting such glass formulations to glass beads having a refractive index of at least 1.59 and a high level of retroreflectivity, are provided. The methods and formulations provide beads also having high levels of resistance to ... | 05/16/2006 |
| 6800574 | Glass beads and uses thereof In one aspect, the invention provides glass beads and optical devices comprising the glass beads. In other aspects, the invention provides methods of making said glass beads and rapid glass screening methods that use glass beads. Glass beads of the invention compris... | 10/05/2004 |
| 6695908 | Method of producing aggregate products using glass A method of producing an improved aggregate product from in inferior initial aggregate material base material. A percentage weight of crushed glass material is introduced into the initial aggregate material to form said aggregate product.... | 02/24/2004 |
| 6514892 | Transparent beads and their production method Transparent solid, fused microspheres are provided. In one embodiment, the microspheres contain alumina, zirconia, and silica in a total content of at least about 70% by weight, based on the total weight of the solid, fused microspheres, wherein the total... | 02/04/2003 |
| 6479417 | Glass-ceramic microspheres that impart yellow color to retroreflected light The present invention relates to transparent microspheres (i.e., beads) that impart yellow color to retroreflected light. The microsphere preferably comprise titania plus alumina, zirconia, and/or silica and iron oxide, manganese oxide, or mixtures thereo... | 11/12/2002 |
| 6461988 | Transparent microspheres Transparent solid microspheres that contain titania plus alumina, zirconia, and/or silica in a total content of at least about 75% by weight, based on the total weight of the solid microspheres, wherein the total content of alumina, zirconia, and titania ... | 10/08/2002 |
| 6245700 | Transparent microspheres Transparent solid microspheres that contain titania plus alumina, zirconia, and/or silica in a total content of at least about 75% by weight, based on the total weight of the solid microspheres, wherein the total content of alumina, zirconia, and titania ... | 06/12/2001 |
| 6204971 | Glass microspheres for use in films and projection screen displays and methods Glass microspheres and rear projection screens containing glass microspheres, which combine a desirable index of refraction (preferably, no greater than about 1.70) and low levels of defects (e.g., bubbles, visible haziness, frostiness, or opacity, substa... | 03/20/2001 |
| 5716706 | Acid-resistant glass An acid-resistant glass article is provided comprising: about 25-45 wt-% SiO2 ; about 20-35 wt-% TiO2 ; less than about 5 wt-% B2 O3 ; about 15-40 wt-% of an alkaline earth modifier selected from the group consi... | 02/10/1998 |
| 5674616 | Glass beads having improved fracture toughness Glass beads in accordance with the present invention may be constituted of SiO2, Al2 O3, Na2 O, K2 O, BaO, SrO, TiO2, and CeO2. The glass of which the glass beads is made will general... | 10/07/1997 |
| 5516227 | Spherodized fluorescent beads for improved roadway pavement marker visibility Retroreflective glass or plastic beads have fluorescent properties when irradiated with ultraviolet light and are emplaced in signs in patterns indicative of alphanumeric characters, or embedded in a hot melt comprising road stripes or embedded in the roa... | 05/14/1996 |
| 5500287 | Thermal insulating material and method of manufacturing same Hollow microspheres produced by the present method each have a hollow interior evacuated of gases to a predetermined pressure. A reflective material layer coats the exterior of each microsphere and, optionally, an outer layer of a protective material is a... | 03/19/1996 |
| 5286682 | Yellow retroreflective pavement markings A pavement marking that has yellow-tinted, retroreflective beads partially embedded in a bead-carrier medium. The bead-carrier medium contains 0.5 to 15 volume percent of a light-scattering agent that scatters white light. The pavement marking is able to ... | 02/15/1994 |
| 4988555 | Patterned pavement marking A retroreflector sheet comprising a base sheet and integral protrusions having a top and a side surface. Selected side surfaces are covered with a bead bond layer including partially embedded retroreflector beads. A process for preparing the retroreflecto... | 01/29/1991 |
| 4931414 | Thermal extractive gelation process Solid, transparent, non-vitreous, microspheres (zirconia-silica) are formed by extractive gelation (extracting carboxylic acid away from zirconyl carboxylate) of a sol in liquid medium such as hot peanut oil. Zirconyl carboxylate precursor sol is prepared... | 06/05/1990 |
| 4772511 | Transparent non-vitreous zirconia microspheres Solid, transparent, non-vitreous, zirconia and zirconia-silica ceramic microspheres, useful as lens elements in retroreflective pavement markings. The microspheres are characterized by: (a) containing at least one additive metal oxide selected from alumina, ... | 09/20/1988 |
| 4758469 | Pavement markings containing transparent non-vitreous ceramic microspheres Pavement marking comprising ceramic microspheres held by a binder, said microspheres being solid, transparent, non-vitreous, ceramic particles which serve as lens elements in the retroreflective pavement markings. The ceramic microspheres formed by variou... | 07/19/1988 |
| 4618525 | Coated glass microbubbles and article incorporating them The invention concerns glass microbubbles having an inorganic thin-film coating not exceeding about 10 nm in thickness, especially a coating of a metal, a metalloid, or an alloy thereof. When dispersed throughout a matrix such as a polymer, the coated gla... | 10/21/1986 |
| 4367919 | Durable glass elements Glass microspheres and other glass elements based on B2 O3, BaO, SiO2 and TiO2 have an improved combination of crushing strength, index of refraction, and, especially in some formulations, chemical resistance. T... | 01/11/1983 |
| 4332354 | Process for preparing transparent iron oxide pigment dispersions This invention relates to a process for preparing transparent iron oxide pigment dispersions. The dispersions are prepared by milling a mixture of iron oxide pigment and a liquid vehicle in a bead mill containing glass beads as the grinding media. The pig... | 06/01/1982 |
| 4192576 | Ultra-high-index glass microspheres and products made therefrom Glass microspheres having an index of refraction of 2.7 or higher are prepared by (1) forming the microspheres from compositions based principally on 65-85 weight-percent Bi2 O3 and 5-35 weight-percent TiO2, and (2) rapidl... | 03/11/1980 |
| 4082427 | High refractive index glass compositions Disclosed are glass compositions that are particularly suited for making colorless and transparent reflex-reflective glass beads with refractive indices over 2.15. These lead-free glass compositions are made with TiO2 as the main constituent mi... | 04/04/1978 |
