Patents by Inventor Vladimir P. Raksha
Vladimir P. Raksha 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: 11945255Abstract: An assembly including a first magnet; a substrate positioned above the first magnet, and having a surface for receiving a composition including a plurality of magnetizable platelets; and a second magnet, positioned above the substrate is disclosed. The assembly can be used in a method of making an optical security element. The optical security element and the method of making the optical security element are also disclosed.Type: GrantFiled: June 13, 2022Date of Patent: April 2, 2024Assignee: VIAVI SOLUTIONS INC.Inventors: Vladimir P. Raksha, Cornelis Jan Delst
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Publication number: 20240042787Abstract: A security article may include a substrate. The security article may include a layer of security ink. The layer of security ink may include a set of color-shifting interference particles. The security article may include a layer of magnetic color-shifting ink. The layer of magnetic color-shifting ink may include a set of magnetically aligned magnetic particles. A color-shifting property of the layer of security ink and a color-shifting property of the layer of magnetic color-shifting ink may have a threshold level of similarity to create a color matching effect.Type: ApplicationFiled: October 17, 2023Publication date: February 8, 2024Inventors: Vladimir P. RAKSHA, Cornelis Jan DELST
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Patent number: 11833849Abstract: A security article may include a substrate. The security article may include a layer of security ink. The layer of security ink may include a set of color-shifting interference particles. The security article may include a layer of magnetic color-shifting ink. The layer of magnetic color-shifting ink may include a set of magnetically aligned magnetic particles. A color-shifting property of the layer of security ink and a color-shifting property of the layer of magnetic color-shifting ink may have a threshold level of similarity to create a color matching effect.Type: GrantFiled: January 25, 2022Date of Patent: December 5, 2023Assignee: VIAVI Solutions Inc.Inventors: Vladimir P. Raksha, Cornelis Jan Delst
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Patent number: 11787956Abstract: The present invention provides a magnetic multilayer pigment flake and a magnetic coating composition that are relatively safe for human health and the environment. The pigment flake includes one or more magnetic layers of a magnetic alloy and one or more dielectric layers of a dielectric material. The magnetic alloy is an iron-chromium alloy or an iron-chromium-aluminum alloy, having a substantially nickel-free composition. The coating composition includes a plurality of the pigment flakes disposed in a binder medium.Type: GrantFiled: September 12, 2022Date of Patent: October 17, 2023Assignee: VIAVI SOLUTIONS INC.Inventors: Vladimir P. Raksha, Paul T. Kohlmann, Cornelis Jan Delst, Paul G. Coombs
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Publication number: 20230129015Abstract: A printing machine including a printing plate on a surface of a rotating cylinder, in which the printing plate has a fixed pattern for receiving a toner; a vessel containing the toner, which includes a pigment and a thermoplastic binder, in which the fixed pattern is a permanent pattern in a form of selected portions of an image is disclosed. A plate for use in the printing machine is also disclosed. A printing system is also disclosed.Type: ApplicationFiled: October 21, 2021Publication date: April 27, 2023Applicant: VIAVI SOLUTIONS INC.Inventors: Cornelis Jan DELST, Vladimir P. RAKSHA, Alberto ARGOITIA, Paul Thomas KOHLMANN
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Publication number: 20230128872Abstract: A recorded and fixed color image, including: a plurality of pixels; in which a pixel, of the plurality of pixels, contains two or more additive process color areas; in which each additive process color area, of the two or more additive process color areas, has a centroid located within an area of the pixel; in which locations of the centroids, within the area of the pixel, are present in two or more configurations in the plurality of pixels is disclosed. A method of forming a color image is also disclosed.Type: ApplicationFiled: October 21, 2021Publication date: April 27, 2023Applicant: VIAVI SOLUTIONS INC.Inventors: Cornelis Jan DELST, Vladimir P. RAKSHA, Alberto ARGOITIA, Paul Thomas KOHLMANN
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Publication number: 20230129906Abstract: A method of printing a toner, including: rotating a cylinder having a printing plate with a fixed pattern; transferring a toner from a vessel onto the fixed pattern of the printing plate, in which the toner includes a pigment with a metallic reflective layer; and transferring the toner onto a substrate; in which the fixed pattern defines select portions of an image; and in which the toner correlates to the selected portions of the image is disclosed.Type: ApplicationFiled: October 21, 2021Publication date: April 27, 2023Applicant: VIAVI SOLUTIONS INC.Inventors: Cornelis Jan DELST, Vladimir P. RAKSHA, Alberto ARGOITIA, Paul Thomas KOHLMANN
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Publication number: 20230038496Abstract: A security device is disclosed that has an image formed upon a substrate. The image has a first printed region and a second different printed region both printed with a same ink formulation of field alignable flakes. At least one of the printed regions has optically variable effects. One of the first and second printed regions at least partially surrounds the other. The second printed region is formed of thin parallel lines and the first printed region has substantially wider lines than are printed in the second printed region. The area density of the ink in a line in the first group of wider lines is greater than the area density of a line in the second group of narrower lines. A surprising effect of this image is that particles or flakes in the ink are field aligned so as to produce a visible kinematic dynamic effect visible in the first region and not visible in the second region when the image is tilted or rotated.Type: ApplicationFiled: October 24, 2022Publication date: February 9, 2023Applicant: VIAVI SOLUTIONS INC.Inventors: Vladimir P. RAKSHA, Paul G. COOMBS, Charles T. MARKANTES
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Patent number: 11554603Abstract: The disclosure relates to an optical security feature that is based on a single axis alignment of mirrors or facets in a structured surface that forms a micro mirror array. In an aspect, a device is described that includes a reflecting structure on a first layer, where the reflecting structure has a top surface with multiple embossed facets arranged in a spatial orientation that produces a flat ring optical effect upon incidence of light. In another aspect, a method for making the device is described that provides a reflecting layer and produces the reflecting structure on the reflecting layer with multiple facets arranged in the spatial orientation to produce the flat ring optical effect. In yet another aspect, an apparatus for making the device is described that includes a pressing device and a stamping device to transfer a pattern of the reflecting structure to a reflecting material.Type: GrantFiled: April 15, 2021Date of Patent: January 17, 2023Assignee: VIAVI Solutions Inc.Inventors: Cornelis Jan Delst, Vladimir P. Raksha, Paul G. Coombs, Robert B. Sargent, Michael Ray Nofi
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Publication number: 20230002628Abstract: The present invention provides a magnetic multilayer pigment flake and a magnetic coating composition that are relatively safe for human health and the environment. The pigment flake includes one or more magnetic layers of a magnetic alloy and one or more dielectric layers of a dielectric material. The magnetic alloy is an iron-chromium alloy or an iron-chromium-aluminum alloy, having a substantially nickel-free composition. The coating composition includes a plurality of the pigment flakes disposed in a binder medium.Type: ApplicationFiled: September 12, 2022Publication date: January 5, 2023Applicant: VIAVI SOLUTIONS INC.Inventors: Vladimir P. RAKSHA, Paul T. KOHLMANN, Cornelis Jan DELST, Paul G. COOMBS
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Publication number: 20220396088Abstract: An assembly including a first magnet; a substrate positioned above the first magnet, and having a surface for receiving a composition including a plurality of magnetizable platelets; and a second magnet, positioned above the substrate is disclosed. The assembly can be used in a method of making an optical security element. The optical security element and the method of making the optical security element are also disclosed.Type: ApplicationFiled: June 13, 2022Publication date: December 15, 2022Applicant: VIAVI SOLUTIONS INC.Inventors: Vladimir P. RAKSHA, Cornelis Jan DELST
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Patent number: 11504990Abstract: A security device is disclosed that has an image formed upon a substrate. The image has a first printed region and a second different printed region both printed with a same ink formulation of field alignable flakes. At least one of the printed regions has optically variable effects. One of the first and second printed regions at least partially surrounds the other. The second printed region is formed of thin parallel lines and the first printed region has substantially wider lines than are printed in the second printed region. The area density of the ink in a line in the first group of wider lines is greater than the area density of a line in the second group of narrower lines. A surprising effect of this image is that particles or flakes in the ink are field aligned so as to produce a visible kinematic dynamic effect visible in the first region and not visible in the second region when the image is tilted or rotated.Type: GrantFiled: June 7, 2019Date of Patent: November 22, 2022Assignee: VIAVI SOLUTIONS INC.Inventors: Vladimir P. Raksha, Paul G. Coombs, Charles T. Markantes
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Patent number: 11441041Abstract: The present invention provides a magnetic multilayer pigment flake and a magnetic coating composition that are relatively safe for human health and the environment. The pigment flake includes one or more magnetic layers of a magnetic alloy and one or more dielectric layers of a dielectric material. The magnetic alloy is an iron-chromium alloy or an iron-chromium-aluminum alloy, having a substantially nickel-free composition. The coating composition includes a plurality of the pigment flakes disposed in a binder medium.Type: GrantFiled: October 15, 2019Date of Patent: September 13, 2022Assignee: VIAVI SOLUTIONS INC.Inventors: Vladimir P. Raksha, Paul T. Kohlmann, Cornelis Jan Delst, Paul G. Coombs
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Publication number: 20220283341Abstract: In some implementations, a metamaterial absorber (MMA) is configured to absorb a particular range of electromagnetic radiation. The MMA includes a first metal or semiconductor material; a dielectric material disposed on the first metal or semiconductor material; and a second metal material disposed on the dielectric material. A length dimension associated with the MMA is less than or equal to 200 micrometers (?m), a width dimension associated with the MMA is less than or equal to 200 ?m, and a thickness dimension associated with the MMA is less than or equal to 8 ?m.Type: ApplicationFiled: February 23, 2022Publication date: September 8, 2022Inventors: Vladimir P. RAKSHA, Paul T. KOHLMANN
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Publication number: 20220282094Abstract: A pigment, including a magnetizable reflector layer including an intermetallic compound, wherein the intermetallic compound is a crystal structure of at least two different elemental metals chemically bonded together is disclosed. A pigment, including a semi-transparent absorber layer including an intermetallic compound, wherein the intermetallic compound is a crystal structure of at least two different elemental metals chemically bonded together is disclosed. A method of making the pigment is also disclosed.Type: ApplicationFiled: March 4, 2021Publication date: September 8, 2022Applicant: VIAVI SOLUTIONS INC.Inventors: Vladimir P. RAKSHA, Cornelis Jan DELST, Paul Thomas KOHLMANN
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Publication number: 20220143997Abstract: A security article may include a substrate. The security article may include a layer of security ink. The layer of security ink may include a set of color-shifting interference particles. The security article may include a layer of magnetic color-shifting ink. The layer of magnetic color-shifting ink may include a set of magnetically aligned magnetic particles. A color-shifting property of the layer of security ink and a color-shifting property of the layer of magnetic color-shifting ink may have a threshold level of similarity to create a color matching effect.Type: ApplicationFiled: January 25, 2022Publication date: May 12, 2022Inventors: Vladimir P. RAKSHA, Cornelis Jan DELST
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Publication number: 20220063319Abstract: In a printed article, pigment flakes are magnetically aligned so as to form curved patterns in a plurality of cross-sections normal a continuous imaginary line, wherein radii of the curved patterns increase along the imaginary line from the first point to the second point. When light is incident upon the aligned pigment Hakes from a light source, light reflected from the aligned pattern forms a bright image which appears to gradually change its shape and move from one side of the continuous imaginary line to another side of the continuous imaginary line when the substrate is tilted with respect to the light source.Type: ApplicationFiled: November 10, 2021Publication date: March 3, 2022Applicant: VIAVI SOLUTIONS INCInventors: Vladimir P. RAKSHA, John HYNES, Laurence HOLDEN, Paul G. COOMBS
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Publication number: 20220056238Abstract: According to examples, a substrate may be moved through a magnetic field, in which the substrate includes a fluid carrier containing magnetically-orientable flakes. The magnetic field may influence the magnetically-orientable flakes to be respectively oriented in one of multiple orientations. In addition, during movement of the substrate through the magnetic field, radiation may be applied onto a plurality of selected portions of the fluid carrier through at least one opening in a mask to cure the fluid carrier at the plurality of selected portions and fix the magnetically-orientable flakes in the plurality of selected portions at the respective angular orientations as influenced by the magnetic field.Type: ApplicationFiled: November 1, 2021Publication date: February 24, 2022Applicant: VIAVI SOLUTIONS INC.Inventors: Vladimir P. RAKSHA, Cornelis Jan Delst
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Publication number: 20220048308Abstract: According to examples, an article may include a base layer that extends along a first dimension and a second dimension, in which the second dimension is orthogonal to the first dimension. The article may also include reflective ribbons provided on an upper surface of the base layer, in which the reflective ribbons positioned along a common plane extending in the second dimension have dihedral angles that change as a function of distance across the common plane.Type: ApplicationFiled: October 29, 2021Publication date: February 17, 2022Applicant: VIAVI SOLUTIONS INC.Inventors: Vladimir P. RAKSHA, Cornelis Jan DELST
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Patent number: 11241901Abstract: A security article may include a substrate. The security article may include a layer of security ink. The layer of security ink may include a set of color-shifting interference particles. The security article may include a layer of magnetic color-shifting ink. The layer of magnetic color-shifting ink may include a set of magnetically aligned magnetic particles. A color-shifting property of the layer of security ink and a color-shifting property of the layer of magnetic color-shifting ink may have a threshold level of similarity to create a color matching effect.Type: GrantFiled: May 24, 2019Date of Patent: February 8, 2022Assignee: VIAVI Solutions Inc.Inventors: Vladimir P. Raksha, Cornelius Jan Delst