Patents by Inventor Gerardus De Keyzer
Gerardus De Keyzer 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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Publication number: 20220098412Abstract: Dichroic azo-azomethine dyes of formula (A) or (B), wherein Ar1 to Ar10 are specific (hetero)aromatic moieties and L is a linking group, as defined in the present claims, a dichroic dye mixture comprising said azo-azomethine dyes and a process for preparing the dyes are provided. The dyes are well suited for combination with liquid crystal material for use, inter alia, in a light absorption anisotropic element, for example, in a switchable optical device or an optically anisotropic film.Type: ApplicationFiled: January 17, 2020Publication date: March 31, 2022Inventors: Leonhard FEILER, Thomas RUCH, Frank BACHMANN, Marie-Pascale PERRITAZ, Gerardus DE KEYZER
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Publication number: 20210277251Abstract: Disclosed is a pigment composition which comprises (a) a pigment of formula wherein Ar1 is phenylene or C2-C6-heteroarylene, Ar2 is C6-C10-aryl or C2-C6-heteroaryl; and (b) a pigment derivative of formula (PM-C X1). (II), wherein P1 is a residue of a colorant chromophore, X1 is a group comprising an aliphatic carboxamide group, an aliphatic sulfonamide group, a carboxylic acid group or salt thereof, and m is 1, 2, 3 or 4. The pigment composition is suitable to color organic material, especially photosensitive resist formulations for use in color filter applications having high contrast ratios.Type: ApplicationFiled: June 19, 2019Publication date: September 9, 2021Applicant: BASF SEInventors: Roman LENZ, Gerardus DE KEYZER, Thomas HORNI
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Patent number: 10690825Abstract: A color filter comprising a cured layer of a photosensitive resist composition comprising a highly reactive polyacrylate monomer and a process for the preparation thereof are provided. The color filter is especially useful for low temperature applications such as electrophoretic displays, polymer dispersed liquid crystal displays, OLED devices and the like.Type: GrantFiled: January 20, 2017Date of Patent: June 23, 2020Assignee: BASF SEInventors: Gerardus De Keyzer, Liliana Craciun, Michael Kuepfert, Frank Oliver Heinrich Pirrung
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Publication number: 20200165479Abstract: The present invention refers to an electrophoretic ink, a method for preparing an electrophoretic ink, an electrophoretic display comprising the electrophoretic ink, a smart window comprising the electrophoretic ink as well as the use of the electrophoretic ink in electrophoretic displays or smart windows and the use of at least one surface-treated silica for improving the bistability of an electrophoretic ink.Type: ApplicationFiled: May 8, 2018Publication date: May 28, 2020Applicant: BASF SEInventors: Gerardus DE KEYZER, Ying GUO
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Publication number: 20190233662Abstract: The present invention refers to an electrophoretic ink, a method for preparing an electrophoretic ink, an electrophoretic display comprising the electrophoretic ink, a smart window comprising the electrophoretic ink as well as the use of the electrophoretic ink in electrophoretic displays or smart windows and the use of a mixture of charge control agents for the preparation of an electrophoretic ink.Type: ApplicationFiled: July 10, 2017Publication date: August 1, 2019Applicant: BASF SEInventors: Ying GUO, Charles FREUDENREICH, Gerardus DE KEYZER, Milijana JOVIC
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Patent number: 10230023Abstract: Color converter comprising at least one polymer and at least one organic fluorescent dye comprising at least one structural unit of the formula (I) where the structural unit may be mono- or polysubstituted by identical or different substituents and where one or more CH groups of the six-membered ring of the benzimidazole structure shown may be replaced by nitrogen.Type: GrantFiled: June 13, 2016Date of Patent: March 12, 2019Assignee: BASF SEInventors: Martin Koenemann, Gerhard Wagenblast, Robert Send, Sorin Ivanovici, Gerardus De Keyzer
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Patent number: 9711665Abstract: A color converter comprising at least one layer comprising at least one organic fluorescent colorant and at least one barrier layer having a low permeability to oxygen.Type: GrantFiled: May 9, 2012Date of Patent: July 18, 2017Assignee: BASF SEInventors: Gerhard Wagenblast, Martin Koenemann, Sorin Ivanovici, Gerardus De Keyzer, Robert Send
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Publication number: 20170131447Abstract: A color filter comprising a cured layer of a photosensitive resist composition comprising a highly reactive polyacrylate monomer and a process for the preparation thereof are provided. The color filter is especially useful for low temperature applications such as electrophoretic displays, polymer dispersed liquid crystal displays, OLED devices and the like.Type: ApplicationFiled: January 20, 2017Publication date: May 11, 2017Inventors: Gerardus DE KEYZER, Liliana Craciun, Michael Kuepfert, Frank Oliver Heinrich Pirrung
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Patent number: 9575230Abstract: A color filter comprising a cured layer of a photosensitive resist composition comprising a highly reactive polyacrylate monomer and a process for the preparation thereof are provided. The color filter is especially useful for low temperature applications such as electrophoretic displays, polymer dispersed liquid crystal displays, OLED devices and the like.Type: GrantFiled: April 21, 2011Date of Patent: February 21, 2017Assignee: BASF SEInventors: Gerardus De Keyzer, Liliana Craciun, Michael Kuepfert, Frank Oliver Heinrich Pirrung
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Patent number: 9406848Abstract: Color converter comprising at least one polymer and at least one organic fluorescent dye comprising at least one structural unit of the formula (I) where the structural unit may be mono- or polysubstituted by identical or different substituents and where one or more CH groups of the six-membered ring of the benzimidazole structure shown may be replaced by nitrogen.Type: GrantFiled: June 8, 2012Date of Patent: August 2, 2016Assignee: BASF SEInventors: Martin Koenemann, Gerhard Wagenblast, Robert Send, Sorin Ivanovici, Gerardus De Keyzer
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Publication number: 20160084477Abstract: Illumination device comprising at least one LED and at least one colour converter comprising at least one organic fluorescent colorant in a matrix consisting essentially of polystyrene or polycarbonate, wherein LED and colour converter are present in a remote phosphor arrangement.Type: ApplicationFiled: December 9, 2015Publication date: March 24, 2016Inventors: Gerhard WAGENBLAST, Martin KOENEMANN, Gerardus DE KEYZER, Sorin IVANOVICI, Michel PEPERS, Matthias MUELLER, Robert SEND
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Patent number: 9236535Abstract: Illumination device comprising at least one LED and at least one color converter comprising at least one organic fluorescent colorant in a matrix consisting essentially of polystyrene or polycarbonate, wherein LED and color converter are present in a remote phosphor arrangement.Type: GrantFiled: February 23, 2012Date of Patent: January 12, 2016Assignee: BASF SEInventors: Gerhard Wagenblast, Martin Koenemann, Gerardus De Keyzer, Sorin Ivanovici, Michel Pepers, Matthias Mueller, Robert Send
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Patent number: 9057020Abstract: Described is a black dichroic dye composition comprising 2 or more dyes, wherein at least one dye, generally a red dye and optionally a yellow dye, conforms to the formula A and at least one dye, usually a blue dye, conforms to the formula B Ar1—N?N—[Ar2—N?N—]qAr3—N?N—Ar4 (B) with symbols as defined in present claims. The dye composition is well suited for combination with liquid crystal material for use, inter alia, as polarizing film and/or in liquid crystal displays, showing, inter alia, high dichroic ratio and excellent compatibility with the LC material.Type: GrantFiled: June 9, 2011Date of Patent: June 16, 2015Assignee: BASF SEInventors: Jean-Pierre Bacher, Gerardus De Keyzer, Urs Lehmann
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Patent number: 8993202Abstract: A color filter comprising a cured layer of a photosensitive resist composition comprising a highly reactive polyacrylate monomer and an alkali soluble binder having a side chain containing an ethylenically unsaturated bond in the side chain and a process for the preparation thereof are provided. The color filter is especially useful for low temperature applications such as electrophoretic displays, polymer dispersed liquid crystal displays, OLED devices and the like.Type: GrantFiled: May 2, 2011Date of Patent: March 31, 2015Assignee: BASF SEInventors: Gerardus De Keyzer, Liliana Craciun, Michael Kuepfert, Frank Oliver Heinrich Pirrung
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Patent number: 8927182Abstract: The present invention relates to a photosensitive resist composition comprising a colorant. More specifically, it relates to a photosensitive resist composition which is advantageously used for the production of a color filter for use in electronic paper displays devices, color image pick-up elements and the like.Type: GrantFiled: March 21, 2007Date of Patent: January 6, 2015Assignee: BASF SEInventors: Daniel Hölzle, Gerardus De Keyzer, Liliana Craciun
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Publication number: 20140103374Abstract: Color converter comprising at least one polymer and at least one organic fluorescent dye comprising at least one structural unit of the formula (I) where the structural unit may be mono- or polysubstituted by identical or different substituents and where one or more CH groups of the six-membered ring of the benzimidazole structure shown may be replaced by nitrogen.Type: ApplicationFiled: June 8, 2012Publication date: April 17, 2014Applicant: BASF SEInventors: Martin Koenemann, Gerhard Wagenblast, Robert Send, Sorin Ivanovici, Gerardus De Keyzer
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Publication number: 20140076397Abstract: A color converter comprising at least one layer comprising at least one organic fluorescent colorant and at least one barrier layer having a low permeability to oxygen.Type: ApplicationFiled: May 9, 2012Publication date: March 20, 2014Applicant: BASF SEInventors: Gerhard Wagenblast, Martin Koenemann, Sorin Ivanovici, Gerardus De Keyzer, Robert Send
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Patent number: 8669026Abstract: Actinically modifiable composition for producing a black matrix comprising, all based on the entire composition, 10-70% by weight of a colorant or a mixture of colorants; 90-30% by weight of actinically reactive binder material, although optionally from 0% to 30% by weight of the actinically reactive binder material can be non-reactive components; and 0-10% by weight of further, non-reactive constituents; characterized in that the colorant or 50-100% by weight, the colorant mixture comprises a colorant obtainable by reaction of a compound of formula (i) with a compound of formula (ii), in the presence of a catalyst, or a mixture of such colorants, wherein the black colorant is likely a product of formula (iii) or a tautomer or isomer thereof.Type: GrantFiled: December 28, 2009Date of Patent: March 11, 2014Assignee: BASF SEInventors: Jan Sültemeyer, Gerardus De Keyzer
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Publication number: 20130334546Abstract: Illumination device comprising at least one LED and at least one colour converter comprising at least one organic fluorescent colorant in a matrix consisting essentially of polystyrene or polycarbonate, wherein LED and colour converter are present in a remote phosphor arrangement.Type: ApplicationFiled: February 23, 2012Publication date: December 19, 2013Applicant: BASF SEInventors: Gerhard Wagenblast, Martin Koenemann, Gerardus De Keyzer, Sorin Ivanovici, Michel Pepers, Matthias Mueller, Robert Send
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Patent number: 8610998Abstract: The present invention relates to the preparation and use of (colored) organic particles carrying electric charge as electrophoretic (image) displaying particles, to electrophoretic dispersions comprising the organic particles carrying electric charge, electrophoretic (image) devices (especially displays) comprising the colored organic particles carrying electric charge, to the novel functionalized particles, and to their use. The particles are obtainable according to a method represented by the reaction scheme as given in FIG. 1.Type: GrantFiled: June 25, 2007Date of Patent: December 17, 2013Assignee: BASF SEInventors: Gabriele Baisch, Reinhold Öhrlein, Peter Simmendinger, Gerardus De Keyzer, Margherita Fontana, Vilas N. Mumbaikar