Patents by Inventor Volkmar Vill
Volkmar Vill 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: 20240016714Abstract: The present disclosure relates to a process and a kit for dyeing keratin-containing fibers, in particular human hair, using selected natural dyes and an iron(II) salt. The kit includes an aqueous composition (M) and an aqueous composition (T), where the aqueous composition (M) includes a polyphenol and a buffer system. The aqueous composition (T) includes a salt of the divalent iron cation Fe(II), and optionally includes a buffer.Type: ApplicationFiled: October 5, 2021Publication date: January 18, 2024Applicant: Henkel AG & Co. KGaAInventors: Lusine SARGSYAN, Hartmut MANNECK, Thomas HIPPE, Volkmar VILL
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Patent number: 8907070Abstract: Glycolipids of branched chain alkyl oligosaccharides include a primary alcohol branched in the 2-position and an oligosaccharide, covalently bond to the alcohol in either ?- or ?-linkage (shown in Formula I and Formula II). These compounds show phase behavior not found for the corresponding straight chain counterparts. The properties involve an ambient temperature liquid crystalline appearance and thermotropic liquid crystal phase polymorphism. The formation of cubic phases is considered most interesting with respect to life science applications, e.g. liposomes for drug delivery. Depending on the choice of sugar head group and alkyl tail, various levels of water miscibility may be adjusted to meet applications requirements (complete solubility for emulsifier applications, e.g. cosmetic creams, to limited water swelling only, e.g. for the preparation of artificial membranes).Type: GrantFiled: November 5, 2012Date of Patent: December 9, 2014Assignee: Universiti MalayaInventors: Rauzah Hashim, Thorsten Heidelberg, Hind Hassan, Nasrul Zamani Mohd Rodzi, Rusnah Syahila Dauli Hussen, Ahmad Sazali Hamzah, Shahidan Radiman, Volkmar Vill, Matthias Wulf, Seiji Ujiie
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Publication number: 20130150567Abstract: Glycolipids of branched chain alkyl oligosaccharides according to this patent comprise of a primary alcohol branched in the 2-position and an oligosaccharide, covalently bond to the alcohol in either ?- or ?-linkage (shown in Formula I and Formula II). These compounds show particularly interesting phase behavior not found for the corresponding straight chain counterparts. The properties involve an ambient temperature liquid crystalline appearance and thermotropic liquid crystal phase polymorphism. Upon the latter, the formation of cubic phases is considered most interesting with respect to life science applications, e.g. liposome for drug delivery. Depending on the choice of sugar head group and alkyl tail, various levels of water miscibility may be adjusted to meet applications requirements (complete solubility for emulsifier applications, e.g. cosmetic creams, to limited water swelling only, e.g. for the preparation of artificial membranes).Type: ApplicationFiled: November 5, 2012Publication date: June 13, 2013Inventors: RAUZAH HASHIM, Thorsten HEIDELBERG, Hind HASSAN, Nasrul Zamani MOHD RODZI, Rusnah Syahila DAULI HUSSEN, Ahmad Sazali HAMZAH, Shahidan RADIMAN, Volkmar VILL, Matthias WULF, Seiji UJIIE
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Patent number: 8304525Abstract: Glycolipids of branched chain alkyl oligosaccharides according to this patent comprise of a primary alcohol branched in the 2-position and an oligosaccharide, covalently bond to the alcohol in either ?- or ?-linkage (shown in Formula I and Formula II). These compounds show particularly interesting phase behavior not found for the corresponding straight chain counterparts. The properties involve an ambient temperature liquid crystalline appearance and thermotropic liquid crystal phase polymorphism. Upon the latter, the formation of cubic phases is considered most interesting with respect to life science applications, e.g. liposome for drug delivery. Depending on the choice of sugar head group and alkyl tail, various levels of water miscibility may be adjusted to meet applications requirements (complete solubility for emulsifier applications, e.g. cosmetic creams, to limited water swelling only, e.g. for the preparation of artificial membranes).Type: GrantFiled: February 20, 2006Date of Patent: November 6, 2012Assignee: Universiti MalayaInventors: Rauzah Hashim, Thorsten Heidelberg, Hind Hassan, Nasrul Zamani Mohd Rodzi, Rusnah Syahila Dauli Hussen, Ahmad Sazali Hamzah, Shahidan Radiman, Volkmar Vill, Matthias Wulf, Seiji Ujiie
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Patent number: 7258902Abstract: The invention relates to chiral 3,4-dihydro-2H-pyran compounds and diastereomers thereof, and to the use of these compounds as chiral dopants for liquid-crystalline systems. The invention furthermore relates to non-polymerizable or polymerizable liquid-crystalline compositions which comprise at least one chiral 3,4-dihydro-2H-pyran compound according to the invention, to the use of these non-polymerizable or polymerizable liquid-crystalline compositions for the production of optical components, to the use of the polymerizable liquid-crystalline compositions for printing or coating substrates, for the preparation or production of dispersions and emulsions, films or pigments and optical components of this type, printed or coated substrates, dispersions and emulsions, films and pigments.Type: GrantFiled: June 30, 2003Date of Patent: August 21, 2007Assignee: BASF AktiengesellschaftInventors: Robert Parker, Frank Prechtl, Sylke Haremza, Frank Meyer, Volkmar Vill, Gunnar Gesekus
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Publication number: 20050230660Abstract: The invention relates to chiral 3,4-dihydro-2H-pyran compounds and diastereomers thereof, and to the use of these compounds as chiral dopants for liquid-crystalline systems. The invention furthermore relates to non-polymerizable or polymerizable liquid-crystalline compositions which comprise at least one chiral 3,4-dihydro-2H-pyran compound according to the invention, to the use of these non-polymerizable or polymerizable liquid-crystalline compositions for the production of optical components, to the use of the polymerizable liquid-crystalline compositions for printing or coating substrates, for the preparation or production of dispersions and emulsions, films or pigments and optical components of this type, printed or coated substrates, dispersions and emulsions, films and pigments.Type: ApplicationFiled: June 30, 2003Publication date: October 20, 2005Inventors: Robert Parker, Frank Prechtl, Sylke Haremza, Frank Meyer, Volkmar Vill, Gunnar Gesekus
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Patent number: 6616990Abstract: The present invention relates to chiral 1,3-dioxane compounds and diastereomers thereof of the general formula I where R1, R2 and R3 are as defined in the description, and the use of these compounds as chiral dopants for liquid-crystalline systems. The invention further relates to non-polymerizable or polymerizable liquid-crystalline compositions comprising at least one chiral 1,3-dioxane compound of the formula (I) of the invention, the use of these non-polymerizable or polymerizable liquid-crystalline compositions for producing optical components, the use of the polymerizable liquid-crystalline compositions for printing or coating substrates, for preparing dispersions and emulsions, films or pigments and optical components, printed or coated substrates, dispersions and emulsions, films and pigments of this type.Type: GrantFiled: March 16, 2001Date of Patent: September 9, 2003Assignee: BASF AktiengesellschaftInventors: Frank Prechtl, Sylke Haremza, Frank Meyer, Robert Parker, Kathrin Kürschner, Volkmar Vill, Matthias Paul
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Patent number: 6569355Abstract: The use of compounds of the general formula I in which the substituents are as defined in the description, as chiral dopants for nematic or cholesteric liquid crystals for the generation of layers which reflect in color in the UV or IR region or for the preparation of pigments having a liquid-crystalline cholesteric order.Type: GrantFiled: October 3, 2000Date of Patent: May 27, 2003Assignee: BASF AktiengesellschaftInventors: Frank Prechtl, Sylke Haremza, Frank Meyer, Robert Parker, Volkmar Vill, Gunnar Gesekus
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Publication number: 20010030312Abstract: The present invention relates to chiral 1,3-dioxane compounds and diastereomers thereof of the general formula I 1Type: ApplicationFiled: March 16, 2001Publication date: October 18, 2001Applicant: BASF AktiengesellschaftInventors: Frank Prechtl, Sylke Haremza, Frank Meyer, Robert Parker, Kathrin Kuerschner, Volkmar Vill, Mathias Paul
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Patent number: 5886242Abstract: The invention relates to chiral compounds containing at least one divalent or polyvalent chiral group, at least one polymerizable group, at least one spacer and at least one mesogenic group, and to their use as polymerizable, chiral dopes for the preparation of cholesteric networks.The novel compounds are suitable for use in electro-optical displays or as chiral dopes for nematic or cholesteric liquid crystals in order to produce layers which reflect in colors.Type: GrantFiled: January 12, 1998Date of Patent: March 23, 1999Assignee: BASF AktiengesellschaftInventors: Karl-Heinz Etzbach, Paul Delavier, Karl Siemensmeyer, Gerhard Wagenblast, Lothar Laupichler, Volkmar Vill
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Patent number: 5820783Abstract: Chiral compounds of the formula I ##STR1## where R.sup.1 is hydrogen or --Y--Z--Y.sup.1,R.sup.2 is ##STR2## and X is hydrogen, fluorine, chlorine, bromine, iodine, hydroxyl or OR.sup.1, whereY is a direct bond, CO or C.sub.2 - to C.sub.8 -alkylene in which nonadjacent carbon atoms may be replaced by O, CO, COO or OCO,Z is a group containing one or more saturated or unsaturated carbocyclic or heterocyclic rings,Y.sup.1 is C.sub.1 - to C.sub.15 -alkyl, C.sub.2 - to C.sub.15 -alkenyl, C.sub.1 - to C.sub.15 -alkoxy, C.sub.2 - to C.sub.15 -alkenyloxy, C.sub.1 - to C.sub.15 -alkanoyloxy or C.sub.3 - to C.sub.15 -alkenoyloxy, it being possible for nonadjacent carbon atoms in these radicals to be replaced by oxygen, OCO or COO, andn is 0, 1 or 2.Type: GrantFiled: July 29, 1997Date of Patent: October 13, 1998Assignee: BASF AktiengesellschaftInventors: Karl Siemensmeyer, Volkmar Vill, Hanns-Walter Tunger, Matthias Paul
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Patent number: 5780629Abstract: The invention relates to chiral compounds containing at least one divalent or polyvalent chiral group, at least one polymerizable group, at least one spacer and at least one mesogenic group, and to their use as polymerizable, chiral dopes for the preparation of cholesteric networks. The novel compounds are suitable for use in electro-optical displays or as chiral dopes for nematic or cholesteric liquid crystals in order to produce layers which reflect in colors.Type: GrantFiled: June 6, 1996Date of Patent: July 14, 1998Assignee: BASF AktiengesellschaftInventors: Karl-Heinz Etzbach, Paul Delavier, Karl Siemensmeyer, Gerhard Wagenblast, Lothar Laupichler, Volkmar Vill
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Patent number: 5753141Abstract: The invention relates to chiral compounds of the general formulaA--Y--(M--Y).sub.n --B--(Y--M).sub.n --Y--AwhereB is a radical of the formula ##STR1## and where the radicals A independently of one another are C.sub.1 - to C.sub.20 -alkyl which may be substituted by fluorine, chlorine, bromine or cyano and may be interrupted by O, S, NH, NCH.sub.3, COO or OCO,X are carbon or boron,Y independently of one another are a chemical bond, O, S, NH, N(CH.sub.3), COO or OCO andM independently of one another are a mesogenic group andn independently of one another are 0 or 1 with the proviso that one n is other than 0.The compounds according to the invention are suitable as dopes in liquid-crystalline media.Type: GrantFiled: September 16, 1996Date of Patent: May 19, 1998Assignee: BASF AktiengesellschaftInventors: Karl Siemensmeyer, Volkmar Vill, Hanns-Walter Tunger
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Patent number: 5709817Abstract: Described herein are chiral compounds of the formula I ##STR1## where R.sup.1 is hydrogen or --Y--Z--Y.sup.1,R.sup.2 is ##STR2## and X is hydrogen, fluorine, chlorine, bromine, iodine, hydroxyl or OR.sup.1, whereY is a direct bond, CO or C.sub.2 - to C.sub.8 -alkylene in which nonadjacent carbon atoms may be replaced by O, CO, COO or OCO,Z is a group containing one or more saturated or unsaturated carbocyclic or heterocyclic rings,Y.sup.1 is C.sub.1 - to C.sub.15 -alkyl, C.sub.2 - to C.sub.15 -alkenyl, C.sub.1 - to C.sub.15 -alkoxy, C.sub.2 - to C.sub.15 -alkenyloxy, C.sub.1 - to C.sub.15 -alkanoyloxy or C.sub.3 - to C.sub.15 -alkenoyloxy, it being possible for nonadjacent carbon atoms in these radicals to be replaced by oxygen, OCO or COO, andn is 0, 1 or 2.Type: GrantFiled: November 24, 1995Date of Patent: January 20, 1998Assignee: BASF AktiengesellschaftInventors: Karl Siemensmeyer, Volkmar Vill, Hanns-Walter Tunger, Matthias Paul
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Patent number: 5691053Abstract: A coating material and coating process for color coating articles, such as motor vehicle bodies, and coated articles produced therewith. The coating contains a paint vehicle composed of at least one curable liquid-crystal polymer (LCP), the colored appearance of the coating being determined by mesogens of the paint vehicle which exhibit an interference effect, the mesogens automatically aligning themselves substantially perpendicular to the surface of the article during application of the coating material and adopting a chiral-nematic configuration in which they form a helix having a pitch length which can be influenced by heat within a specified temperature range. The liquid-crystal polymers are such that they are not crosslinked by heat and also such that the temperature level at which the pitch length of the helix can be influenced is above the temperature at which the color coated article is used.Type: GrantFiled: May 15, 1995Date of Patent: November 25, 1997Assignee: Daimler-Benz AGInventors: Michael Gailberger, Anne Barth, Hans Ruetger Kricheldorf, Volkmar Vill, Mihai Gurau, Matthias Berghahn