Patents by Inventor Michael G. Mikhael
Michael G. Mikhael 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: 9558679Abstract: An organic release agent is vacuum deposited over a substrate and surface treated with a plasma or ion-beam source in a gas rich in oxygen-based functional groups to harden a very thin layer of the surface of the deposited layer in passivating environment. Aluminum is subsequently vacuum deposited onto the hardened release layer to form a very flat and specular thin film. The film is exposed to a plasma gas containing oxygen or nitrogen to passivate its surface. The resulting product is separated from the substrate, crushed to break up the film into aluminum flakes, and mixed in a solvent to separate the still extractable release layer from the aluminum flakes. The surface treatment of the release layer greatly reduces wrinkles in the flakes, improving the optical characteristics of the flakes. The passivation of the flake material virtually eliminates subsequent corrosion from exposure to moisture.Type: GrantFiled: December 5, 2014Date of Patent: January 31, 2017Assignee: Sigma Laboratories of Arizona, LLCInventors: Michael G. Mikhael, Angelo Yializis
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Patent number: 9082320Abstract: An organic release agent is vacuum deposited over a substrate and surface treated with a plasma or ion-beam source in a gas rich in oxygen-based functional groups to harden a very thin layer of the surface of the deposited layer in a passivating environment. Aluminum is subsequently vacuum deposited onto the hardened release layer to form a very flat and specular thin film. The film is exposed to a plasma gas containing oxygen or nitrogen to passivate its surface. The resulting product is separated from the substrate, crushed to brake up the film into aluminum flakes, and mixed in a solvent to separate the still extractable release layer from the aluminum flakes. The surface treatment of the release layer greatly reduces wrinkles in the flakes, improving the optical chracteristics of the flakes. The passivation of the flake material virtually eliminates subsequent corrosion from exposure to moisture.Type: GrantFiled: January 18, 2006Date of Patent: July 14, 2015Assignee: Sigma Laboratories of Arizona, LLCInventors: Michael G. Mikhael, Angelo Yializis
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Publication number: 20150111027Abstract: An organic release agent is vacuum deposited over a substrate and surface treated with a plasma or ion-beam source in a gas rich in oxygen-based functional groups to harden a very thin layer of the surface of the deposited layer in passivating environment. Aluminum is subsequently vacuum deposited onto the hardened release layer to form a very flat and specular thin film. The film is exposed to a plasma gas containing oxygen or nitrogen to passivate its surface. The resulting product is separated from the substrate, crushed to break up the film into aluminum flakes, and mixed in a solvent to separate the still extractable release layer from the aluminum flakes. The surface treatment of the release layer greatly reduces wrinkles in the flakes, improving the optical characteristics of the flakes. The passivation of the flake material virtually eliminates subsequent corrosion from exposure to moisture.Type: ApplicationFiled: December 5, 2014Publication date: April 23, 2015Inventors: Michael G. Mikhael, Angelo Yializis
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Patent number: 8497010Abstract: A moisture vapor permeable metalized composite sheet is formed by coating a moisture vapor permeable sheet with at least one metal layer and at least one outer organic coating layer. The moisture vapor permeability of the composite sheet is at least about 80% of the moisture vapor permeability of the starting sheet. The composite sheet provides a barrier to air and liquid water infiltration while having high moisture vapor permeability and good thermal barrier properties. The composite sheet material is suitable for use as a building construction wrap such as roof lining and house wrap.Type: GrantFiled: October 25, 2007Date of Patent: July 30, 2013Assignee: E I du Pont de Nemours and CompanyInventors: Ioannis V Bletsos, Edmee Lydie Marie-Jeanne Devaquet, Joseph Anthony King, Jr., Michael G Mikhael, Jose Manuel Rodriguez-Parada, Angelo Yializis
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Patent number: 8431209Abstract: A moisture vapor permeable metalized composite sheet is formed by coating a moisture vapor permeable sheet with at least one metal layer and at least one outer organic coating layer. The moisture vapor permeability of the composite sheet is at least about 80% of the moisture vapor permeability of the starting sheet. The composite sheet provides a barrier to air and liquid water infiltration while having high moisture vapor permeability and good thermal barrier properties. The composite sheet material is suitable for use as a building construction wrap such as roof lining and house wrap.Type: GrantFiled: October 25, 2007Date of Patent: April 30, 2013Assignee: E I du Pont de Nemours and CompanyInventors: Ioannis V Bletsos, Edmee Lydie Marie-Jeanne Devaquet, Michael G Mikhael, Jose Manuel Rodrigues-Parada, Angelo Yializis, Joseph Anthony King, Jr.
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Publication number: 20130004690Abstract: A hydrophilic expanded fluoropolymer membrane having a coating comprising a copolymer comprising a non-wetting monomer and a fluoromonomer is described. In one embodiment, the non-wetting monomer and fluoromonomer are cross linked. A process of vaporizing, condensing and curing a formulation or formulations comprising the non-wetting monomer and/or the fluoromonomer is described. In one embodiment the condensed formulation is exposed to a high energy source such as a UV lamp for example to cross link the non-wetting monomer with the fluoromonomer. The coating may be conformable coating and may provide a hydrophilic membrane that has high water flow rates.Type: ApplicationFiled: June 29, 2011Publication date: January 3, 2013Inventors: Michael G. Mikhael, Anthony J. LaBoy
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Patent number: 8323801Abstract: A process for forming a low emissivity, moisture vapor permeable metallized composite sheet by coating a moisture vapor permeable sheet with at least one metal and exposing the freshly deposited metal to an oxidizing plasma thereby forming a protective synthetic metal oxide over the metal. The composite sheet material is suitable for use as a building construction barrier layer such as roof lining and house wrap.Type: GrantFiled: January 18, 2006Date of Patent: December 4, 2012Assignee: E I du Pont de Nemours and CompanyInventors: John James Barnes, Ioannis V. Bletsos, Angelo Yializis, Michael G. Mikhael
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Patent number: 7805907Abstract: A moisture vapor permeable metalized composite sheet is formed by coating a moisture vapor permeable sheet with at least one metal layer and at least one outer organic coating layer. The moisture vapor permeability of the composite sheet is at least about 80% of the moisture vapor permeability of the starting sheet. The composite sheet provides a barrier to air and liquid water infiltration while having high moisture vapor permeability and good thermal barrier properties. The composite sheet material is suitable for use as a building construction wrap such as roof lining and house wrap.Type: GrantFiled: October 25, 2007Date of Patent: October 5, 2010Assignee: E.I. du Pont de Nemours and CompanyInventors: Ioannis V. Bletsos, Edmee Lydie Marie-Jeanne Devaquet, Joseph Anthony King, Jr., Michael G Mikhael, Jose Manuel Rodriguez-Parada, Angelo Yializis
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Patent number: 7781034Abstract: A composite multi-layer barrier is produced by first vapor depositing a barrier under vacuum over a substrate and then depositing an additional barrier at atmospheric pressure in a preferably thermoplastic layer. The resulting multi-layer barrier is used to coat an article in a lamination process wherein the thermoplastic layer is fused onto itself and the surface of the article. The vacuum-deposited barrier may include of a first leveling polymer layer followed by an inorganic barrier material sputtered over the leveling layer and of an additional polymeric layer flash evaporated, deposited, and cured under vacuum. The thermoplastic polymeric layer is then deposited by extrusion, drawdown or roll coating at atmospheric pressure. The resulting multi-layer barrier may be stacked using the thermoplastic layer as bonding agent. Nano-particles may be included in the thermoplastic layer to improve barrier properties. A desiccant material may also be included or added as a separate layer.Type: GrantFiled: May 4, 2004Date of Patent: August 24, 2010Assignee: Sigma Laboratories of Arizona, LLCInventors: Angelo Yializis, Michael G. Mikhael
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Patent number: 7754106Abstract: A release agent is flash evaporated and deposited onto a support substrate under conventional vapor-deposition conditions and a conductive metal oxide, such as ITO, is subsequently sputtered or deposited by reactive electron beam onto the resulting release layer in the same process chamber to form a very thin film of conductive material. The resulting multilayer product is separated from the support substrate, crushed to brake up the metal-oxide film into flakes, and heated or mixed in a solvent to separate the soluble release layer from the metallic flakes. Thus, by judiciously controlling the deposition of the ITO on the release layer, transparent flakes may be obtained with the desired optical and physical characteristics.Type: GrantFiled: June 7, 2006Date of Patent: July 13, 2010Assignee: Sigma Laboratories of Arizona, LLCInventors: Michael G. Mikhael, Angelo Yializis
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Patent number: 7557019Abstract: A plasma is produced in a treatment space (58) by diffusing a plasma gas at atmospheric pressure and subjecting it to an electric field created by two metallic electrodes (54,56) separated by a dielectric material (64), and a precursor material is introduced into the treatment space to coat a substrate film or web (14) by vapor deposition or atomized spraying at atmospheric pressure. The deposited precursor exposed to an electromagnetic field (AC, DC, or plasma) and then it is cured by electron-beam, infrared-light, visible-light, or ultraviolet-light radiation, as most appropriate for the particular material being deposited. Additional plasma post-treatment may be used to enhance the properties of the resulting coated products.Type: GrantFiled: December 5, 2006Date of Patent: July 7, 2009Assignee: Sigma Laboratories of Arizona, LLCInventors: Michael G. Mikhael, Angelo Yializis, Richard E. Ellwanger
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Patent number: 7491433Abstract: A coated porous sheet material comprising a gas permeable sheet material selected from the group consisting of flash spun plexifilamentary nonwoven sheet, spunbonded-film-spunbonded composite sheet, spun-laced polyester/wood pulp composite sheet and paper and a polymeric coating on at least one side thereof, wherein the permeability of the coated sheet material is substantially equivalent to the permeability of an equivalent sheet material without the coating. The coated porous sheet material is suitable for use in heat sealable packages.Type: GrantFiled: November 18, 2005Date of Patent: February 17, 2009Assignees: E.I. du Pont de Nemours and Company, Sigma Laboratories of Arizona, Inc.Inventors: Ioannis V. Bletsos, Michael G. Mikhael, Jose Manuel Rodriguez-Parada, Angelo Yializis
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Publication number: 20080187740Abstract: A moisture vapor permeable metalized composite sheet is formed by coating a moisture vapor permeable sheet with at least one metal layer and at least one outer organic coating layer. The moisture vapor permeability of the composite sheet is at least about 80% of the moisture vapor permeability of the starting sheet. The composite sheet provides a barrier to air and liquid water infiltration while having high moisture vapor permeability and good thermal barrier properties. The composite sheet material is suitable for use as a building construction wrap such as roof lining and house wrap.Type: ApplicationFiled: October 25, 2007Publication date: August 7, 2008Inventors: Ioannis V. Bletsos, Edmee Lydie Marie-Jeanne Devaquet, Michael G. Mikhael, Jose Manuel Rodriguez-Parada, Angelo Yializis
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Patent number: 7300859Abstract: A plasma is produced in a treatment space (58) by diffusing a plasma gas at atmospheric pressure and subjecting it to an electric field created by two metallic electrodes (54,56) separated by a dielectric material (64), a precursor material is introduced into the treatment space to coat a substrate film or web (14) by vapor deposition or atomized spraying at atmospheric pressure. The deposited precursor is cured by electron-beam, infrared-light, visible-light, or ultraviolet-light radiation, as most appropriate for the particular material being deposited. Additional plasma post-treatment may be used to enhance the properties of the resulting coated products.Type: GrantFiled: June 7, 2006Date of Patent: November 27, 2007Assignee: Sigma Laboratories of Arizona, LLCInventors: Michael G. Mikhael, Angelo Yializis, Richard E. Ellwanger
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Publication number: 20070166528Abstract: A process for forming a low emissivity, moisture vapor permeable metallized composite sheet by coating a moisture vapor permeable sheet with at least one metal and exposing the freshly deposited metal to an oxidizing plasma thereby forming a protective synthetic metal oxide over the metal. The composite sheet material is suitable for use as a building construction barrier layer such as roof lining and house wrap.Type: ApplicationFiled: January 18, 2006Publication date: July 19, 2007Inventors: John James Barnes, Ioannis V. Bletsos, Angelo Yializis, Michael G. Mikhael
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Publication number: 20070166556Abstract: In a continuous in-vacuum process for the manufacture of a film metallized with aluminum, the aluminum layer is exposed to a passivating agent, inline, immediately after deposition and prior to rewinding of the film onto a take-up roller. Passivation is carried out by plasma treatment in an oxidizing atmosphere (oxygen, nitrogen or others). The resulting product exhibits no peel-off problems during unwinding of the take-up roller and greatly improved corrosion resistance.Type: ApplicationFiled: October 25, 2006Publication date: July 19, 2007Applicant: Sigma Laboratories of Arizona, LLCInventors: Angelo Yializis, Michael G. Mikhael
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Patent number: 7157117Abstract: A porous substrate is pretreated in a plasma field and a functionalizing monomer is immediately flash-evaporated, deposited and cured over the porous substrate in a vacuum vapor-deposition chamber. By judiciously controlling the process so that the resulting polymer coating adheres to the surface of individual fibers in ultra-thin layers (approximately 0.02–3.0 ?m) that do not extend across the pores in the material, the porosity of the porous substrate is essentially unaffected while the fibers and the final product acquire the desired functionality. The resulting polymer layer is also used to improve the adherence and durability of metallic and ceramic coatings.Type: GrantFiled: April 23, 2004Date of Patent: January 2, 2007Assignee: Sigma Laboratories of Arizona, LLCInventors: Michael G. Mikhael, Angelo Yializis
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Patent number: 7067405Abstract: A plasma is produced in a treatment space by diffusing a plasma gas at atmospheric pressure and subjecting it to an electric field created by two metallic electrodes separated by a dielectric material, a precursor material is mixed with the plasma, and a substrate film or web is coated by vapor deposition of the vaporized substance at atmospheric pressure in the plasma field. The deposited precursor is cured by electron-beam, infrared-light, visible-light, or ultraviolet-light radiation, as most appropriate for the particular material being-deposited. Plasma pre-treatment and post-treatment steps are used to enhance the properties of the resulting coated products. Similar results are obtained by atomizing and spraying the liquid precursor in the plasma field.Type: GrantFiled: July 1, 2004Date of Patent: June 27, 2006Assignee: Sigma Laboratories of Arizona, Inc.Inventors: Michael G. Mikhael, Angelo Yializis, Richard E. Ellwanger
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Patent number: 7005161Abstract: A monomer is selected to produce a polymeric film having desirable characteristics for a particular application. The monomer is ppolymerized under controlled conditions to produce a solid oligomer having those characteristics at a molecular weight suitable for evaporation under vacuum at a temperature lower than its thermal decomposition temperature. The process of polymerization to produce the oligomer is carried out under conditions that yield a finite molecular-chain length with no residual reactive groups. The solid oligomer so produced is extruded as a film onto a revolving drum (38) in the evaporation section (40) of a vapor deposition chamber, and then cryocondensed on a cold substrate (44) to form a solid film having the same characteristic selected in the solid oligomer constituting the starting material. As a result of the initial complete reaction to produce the oligomer, the thin-film product does not contain unreacted groups and all attendant disadvantages are avoided.Type: GrantFiled: June 22, 2001Date of Patent: February 28, 2006Assignee: Sigma Laboratories of Arizona, Inc.Inventors: Michael G. Mikhael, Angelo Yializis
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Publication number: 20040213918Abstract: A porous substrate is pretreated in a plasma field and a functionalizing monomer is immediately flash-evaporated, deposited and cured over the porous substrate in a vacuum vapor-deposition chamber. By judiciously controlling the process so that the resulting polymer coating adheres to the surface of individual fibers in ultra-thin layers (approximately 0.02-3.0 &mgr;m) that do not extend across the pores in the material, the porosity of the porous substrate is essentially unaffected while the fibers and the final product acquire the desired functionality. The resulting polymer layer is also used to improve the adherence and durability of metallic and ceramic coatings.Type: ApplicationFiled: April 23, 2004Publication date: October 28, 2004Inventors: Michael G. Mikhael, Angelo Yializis