Patents by Inventor Robert A. Sallavanti
Robert A. Sallavanti has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 7344774Abstract: A weldable workpiece having a surface deposition including an absorber dye possessing strong absorption and a high extinction coefficient. The dye is deposited at a uniform density and thereby has the capacity to convert inbound radiant energy over about 0.1 J per square millimeter into thermal energy via vibronic relaxation and exothermic decomposition. In optical applications, the workpiece forms welds of high photopic and optical transmission. The improved transmission results from the solvent residues, additives, dyes and by-products being mutually miscible with the workpiece surface. A method for preprocessing the workpiece describes steps for selecting polymers, dyes and vehicles.Type: GrantFiled: April 6, 2007Date of Patent: March 18, 2008Assignee: Gentex CorporationInventors: Scott M. Hartley, Robert A. Sallavanti
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Publication number: 20080047668Abstract: Selection criteria for dyes that predicts efficiency and performance for plastics welding. A first stage quantitative calculation screens dyes that possess an absorption band that can be matched to a laser that is suitable for plastic welding. It also identifies absorption troughs in the visible spectrum and establishes relationships between the relative optical densities of the absorption band and trough. A second stage quantitative calculation screens dyes for their contribution to the transparency of the substrate. By combining these two stages, the usefulness of a candidate dye can be quickly, easily and inexpensively determined.Type: ApplicationFiled: September 17, 2007Publication date: February 28, 2008Inventors: Robert Sallavanti, L. Frieder
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Publication number: 20070286877Abstract: A reactive and adsorptive (i.e., multi-functional protective) textile and methods for constructing and using same which possess at least chemically reactive and biocidal properties. Nanoparticles from different classes such as metal oxides, metal hydroxides, metal hydrates and POMs are incorporated into elements which can be utilized in a wide variety of protective materials. The nanoparticles may be treated to reduce water solubility or combined with halogens, alkali metals or secondary metal oxides to specifically engineer the nanoparticle to address a particular chemical or biocidal threat.Type: ApplicationFiled: August 22, 2007Publication date: December 13, 2007Inventors: HOLLY AXTELL, Scott Hartley, Robert Sallavanti
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Patent number: 7276136Abstract: Selection criteria for dyes that predicts efficiency and performance for plastics welding. A first stage quantitative calculation screens dyes that possess an absorption band that can be matched to a laser that is suitable for plastic welding. It also identifies absorption troughs in the visible spectrum and establishes relationships between the relative optical densities of the absorption band and trough. A second stage quantitative calculation screens dyes for their contribution to the transparency of the substrate. By combining these two stages, the usefulness of a candidate dye can be quickly, easily and inexpensively determined.Type: GrantFiled: July 9, 2004Date of Patent: October 2, 2007Assignee: Gentex CorporationInventors: Robert A. Sallavanti, Leonard Peter Frieder, III
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Patent number: 7268269Abstract: A reactive and adsorptive (i.e., multi-functional protective) textile and methods for constructing and using same which possess at least chemically reactive and biocidal properties. Nanoparticles from different classes such as metal oxides, metal hydroxides, metal hydrates and POMs are incorporated into elements which can be utilized in a wide variety of protective materials. The nanoparticles may be treated to reduce water solubility or combined with halogens, alkali metals or secondary metal oxides to specifically engineer the nanoparticle to address a particular chemical or biocidal threat.Type: GrantFiled: June 8, 2004Date of Patent: September 11, 2007Assignee: Gentex CorporationInventors: Holly C. Axtell, Scott M. Hartley, Robert A. Sallavanti
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Publication number: 20070187029Abstract: A reactive and adsorptive (i.e., multi-functional protective) textile and methods for constructing and using same which possess at least chemically reactive and biocidal properties. Nanoparticles from different classes such as metal oxides, metal hydroxides, metal hydrates and POMs are incorporated into elements which can be utilized in a wide variety of protective materials. The nanoparticles may be treated to reduce water solubility or combined with halogens, alkali metals or secondary metal oxides to specifically engineer the nanoparticle to address a particular chemical or biocidal threat.Type: ApplicationFiled: June 8, 2004Publication date: August 16, 2007Inventors: Holly Axtell, Scott Hartley, Robert Sallavanti
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Patent number: 7256156Abstract: A reactive-adsorptive protective material having an activated carbon adsorbent, including those manufactured from a gel-type ion exchange resin. The activated carbon adsorbent has adsorptive properties for adsorbing chemical impurities. The activated carbon is wettlerized to further impart reactive properties onto the activated carbon for providing protection against blood agents in the atmosphere. Advantageously, a superior reactive-adsorptive material is provided having the ability to neutralize chemical substances, in particular, blood agents, while at the same time not diminishing the effectiveness of the carbon's adsorption capabilities.Type: GrantFiled: February 24, 2003Date of Patent: August 14, 2007Assignee: Gentex CorporationInventors: Holly C. Axtell, Scott M. Hartley, Robert A. Sallavanti
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Publication number: 20070184279Abstract: A weldable workpiece having a surface deposition including an absorber dye possessing strong absorption and a high extinction coefficient. The dye is deposited at a uniform density and thereby has the capacity to convert inbound radiant energy over about 0.1 J per square millimeter into thermal energy via vibronic relaxation and exothermic decomposition. In optical applications, the workpiece forms welds of high photopic and optical transmission. The improved transmission results from the solvent residues, additives, dyes and by-products being mutually miscible with the workpiece surface. A method for preprocessing the workpiece describes steps for selecting polymers, dyes and vehicles.Type: ApplicationFiled: April 6, 2007Publication date: August 9, 2007Inventors: Scott Hartley, Robert Sallavanti
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Patent number: 7201963Abstract: A weldable workpiece prepared by depositing on a surface of the workpiece, an absorber dye possessing strong absorption and a high extinction coefficient. The dye is deposited at a uniform density and thereby has the capacity to convert inbound radiant energy over about 0.1 J per square millimeter into thermal energy via vibronic relaxation and exothermic decomposition. In optical applications, the workpiece forms welds of high photopic and optical transmission. A method for preprocessing the workpiece describes steps for selecting polymers, dyes and vehicles.Type: GrantFiled: January 15, 2002Date of Patent: April 10, 2007Assignee: Gentex CorporationInventors: Scott M. Hartley, Robert A. Sallavanti
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Patent number: 7008056Abstract: The present invention provides eye protection systems. The eye protection systems include a lens capable of being mounted in and being interchangeable between a plurality of different lens-mounting platforms. These platforms may include spectacles or goggles with release mechanisms, which permit the lens to be removed while providing full ballistic protection when installed in the platform. The lens of the present invention protects against a plurality of threats including spectrums of light, such as sun light, ultraviolet light, or laser light, wind, dust, projectiles, etc. The lens may include a laminate structure, which protects sensitive technologies from exposure to environmental conditions, such as chemicals, weather, etc.Type: GrantFiled: July 22, 2005Date of Patent: March 7, 2006Assignee: Gentex CorporationInventors: Scott M. Hartley, Robert A. Sallavanti, Brad Sutter
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Publication number: 20050264753Abstract: The present invention provides eye protection systems. The eye protection systems include a lens capable of being mounted in and being interchangeable between a plurality of different lens-mounting platforms. These platforms may include spectacles or goggles with release mechanisms, which permit the lens to be removed while providing full ballistic protection when installed in the platform. The lens of the present invention protects against a plurality of threats including spectrums of light, such as sun light, ultraviolet light, or laser light, wind, dust, projectiles, etc. The lens may include a laminate structure, which protects sensitive technologies from exposure to environmental conditions, such as chemicals, weather, etc.Type: ApplicationFiled: July 22, 2005Publication date: December 1, 2005Inventors: Scott Hartley, Robert Sallavanti, Brad Sutter
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Patent number: 6951681Abstract: A method for optically coupling a thermoplastic material to an outer surface layer of an organic, dielectric, optical film and the resulting optical filter. Initially, a dielectric film is selected that includes (i) repeating optical layers of at least two polymers having different refractive indexes from each other, (ii) an exterior film surface, (iii) a refractive boundary along the exterior film surface, and (iv) a delamination threshold based on total thermal energy delivered to the film. A thermoplastic material which is miscible with the exterior film surface is fused to the refractive boundary with thermal energy below the delamination threshold to form a polydisperse region having a higher optical transmission than the refractive boundary. Add-on filters in the form of hardcoat layers, anti-reflection layers, holograms, metal dielectric stacks and combinations of these may be combined with the thermoplastic-film construct.Type: GrantFiled: December 12, 2003Date of Patent: October 4, 2005Assignee: GENTEX CorporationInventors: Scott M. Hartley, Robert A. Sallavanti
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Patent number: 6923537Abstract: The present invention provides eye protection systems. The eye protection systems include a lens capable of being mounted in and being interchangeable between a plurality of different lens-mounting platforms. These platforms may include spectacles or goggles with release mechanisms, which permit the lens to be removed while providing full ballistic protection when installed in the platform. The lens of the present invention protects against a plurality of threats including spectrums of light, such as sun light, ultraviolet light, or laser light, wind, dust, projectiles, etc. The lens may include a laminate structure, which protects sensitive technologies from exposure to environmental conditions, such as chemicals, weather, etc.Type: GrantFiled: August 9, 2002Date of Patent: August 2, 2005Assignee: Gentex CorporationInventors: Scott M. Hartley, Robert A. Sallavanti, Brad Sutter
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Patent number: 6911262Abstract: Selection criteria for dyes that predicts efficiency and performance for plastics welding. A first stage quantitative calculation screens dyes that possess an absorption band that can be matched to a laser that is suitable for plastic welding. It also identifies absorption troughs in the visible spectrum and establishes relationships between the relative optical densities of the absorption band and trough. A second stage quantitative calculation screens dyes for their contribution to the transparency of the substrate. By combining these two stages, the usefulness of a candidate dye can be quickly, easily and inexpensively determined.Type: GrantFiled: May 19, 2003Date of Patent: June 28, 2005Assignee: Gentex CorporationInventors: Robert A. Sallavanti, Leonard Peter Frieder, III
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Publication number: 20050026778Abstract: A reactive and adsorptive (i.e., protective) fiber, a multi-element protective filter and methods for constructing and using same which possess at least chemically reactive and biocidal properties. Nanoparticles from different classes such as metal oxides, metal hydroxides, metal hydrates and POMs are incorporated into elements which can be utilized in a wide variety of protective materials. The nanoparticles may be treated to reduce water solubility or combined with halogens, alkali metals or secondary metal oxides to specifically engineer the nanoparticle to address a particular chemical or biocidal threat. When arranged upstream of an activated carbon filter, the nanoparticles provide enhanced adsorption or additional reactive properties to the protective filter. When used with carbon specially treated with metal ions, the protective filter retains the ability to adsorb blood agents as well.Type: ApplicationFiled: May 17, 2004Publication date: February 3, 2005Inventors: Holly Axtell, Scott Hartley, Robert Sallavanti
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Publication number: 20040244905Abstract: Selection criteria for dyes that predicts efficiency and performance for plastics welding. A first stage quantitative calculation screens dyes that possess an absorption band that can be matched to a laser that is suitable for plastic welding. It also identifies absorption troughs in the visible spectrum and establishes relationships between the relative optical densities of the absorption band and trough. A second stage quantitative calculation screens dyes for their contribution to the transparency of the substrate. By combining these two stages, the usefulness of a candidate dye can be quickly, easily and inexpensively determined.Type: ApplicationFiled: July 9, 2004Publication date: December 9, 2004Inventors: Robert A. Sallavanti, L. P. Frieder
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Publication number: 20040183219Abstract: A method for optically coupling a thermoplastic material to an outer surface layer of an organic, dielectric, optical film and the resulting optical filter. Initially, a dielectric film is selected that includes (i) repeating optical layers of at least two polymers having different refractive indexes from each other, (ii) an exterior film surface, (iii) a refractive boundary along the exterior film surface, and (iv) a delamination threshold based on total thermal energy delivered to the film. A thermoplastic material which is miscible with the exterior film surface is fused to the refractive boundary with thermal energy below the delamination threshold to form a polydisperse region having a higher optical transmission than the refractive boundary. Add-on filters in the form of hardcoat layers, anti-reflection layers, holograms, metal dielectric stacks and combinations of these may be combined with the thermoplastic-film construct.Type: ApplicationFiled: December 12, 2003Publication date: September 23, 2004Inventors: Scott M. Hartley, Robert A. Sallavanti
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Patent number: 6770158Abstract: A method and system for assessing proper pre-processing and proper welding of polymer workpieces. A visible or infrared radiation source, optionally coupled with optical filters, directs radiation at test wavelengths through a workpiece which is captured by sensors at one or more stations. The system controller determines from the sensor data whether the absorber dye was properly deposited onto the workpiece. The workpiece is then certified weld-enabled within a bandwidth range of the test wavelength. The bandwidth range is determined by absorption spectra and extinction coefficients of the dye or by utilizing multiple test wavelengths. For determining whether proper welds occurred, a further embodiment of the method and system check for spectral characteristics that the dye vehicle did not unduly interfere or occlude the weld. Further spectral data indicates fusing of reflective surfaces, increased transmission and increase photopic transmission.Type: GrantFiled: May 17, 2002Date of Patent: August 3, 2004Assignee: Gentex CorporationInventors: Scott M Hartley, Robert A. Sallavanti
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Patent number: 6719812Abstract: A method of infusing a dye into the surface of an article formed of a plastic material comprises contacting the surface with a solution including one or more solvents each aggressive to the plastic material, one or more dyes and one or more substances each capable of plasticizing the plastic material. If the plastic material is polycarbonate, then the aggressive solvent may be one or more chlorinated hydrocarbons. The dye may be a photochromic dye, a cosmetic tinting dye, dyes for absorbing infrared, laser and ultraviolet radiation, or combinations thereof. A wide range of plasticizers has been investigated. The article is contacted by the solution for ten seconds to one minute; and nearly all the infused solvent is then evaporated from the article by heating. The use of one or more plasticizers reduces or eliminates bubbling or hazing of the contacted surface during solvent evaporation.Type: GrantFiled: April 11, 2000Date of Patent: April 13, 2004Assignee: Gentex Optics, Inc.Inventors: Paresh V. Kitchloo, Robert A. Sallavanti
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Publication number: 20040038023Abstract: A weldable workpiece prepared by depositing on a surface of the workpiece, an absorber dye possessing strong absorption and a high extinction coefficient. The dye is deposited at a uniform density and thereby has the capacity to convert inbound radiant energy over about 0.1 J per square millimeter into thermal energy via vibronic relaxation and exothermic decomposition. In optical applications, the workpiece forms welds of high photopic and optical transmission. A method for preprocessing the workpiece describes steps for selecting polymers, dyes and vehicles.Type: ApplicationFiled: January 15, 2002Publication date: February 26, 2004Inventors: Scott M. Hartley, Robert A. Sallavanti