Patents by Inventor Ralf Ruhmann
Ralf Ruhmann 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: 10759934Abstract: Polymer particles having a mean primary particle diameter d50 between 50 nm and 10 pm based on the total weight, containing: A. 10 to 100% by weight of a polymer phase A, obtainable by free-radical copolymerization of an oil-in-water miniemulsion having a monomer mixture as oil phase, containing i) 30 to 99.9% by weight of one or more mono-ethylenically unsaturated monomers II having at least one C12-C48-n-alkyl side chain, ii) 0 to 60% by weight of one or more mono-ethylenically unsaturated monomers II having at least one C1-C11-n-alkyl and/or one C3-C48-i-alkyl side chain, iii) 0.1 to 20% by weight of one or more monomers III having at least two non-conjugated ethylenic double bonds, iv) 0 to 69.9% by weight of one or more (hetero)aromatic, mono-ethylenically unsaturated monomers IV, v) 0 to 40% by weight of one or more other mono-ethylenically unsaturated monomers V; and B.Type: GrantFiled: December 19, 2013Date of Patent: September 1, 2020Assignee: QUARZWERKE GMBHInventors: Jörg Ulrich Zilles, Dirk Kruber, Arno Seeboth, Olaf Mühling, Ralf Ruhmann
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Patent number: 10133093Abstract: The invention relates to doping capsules which have a substance which displays a decreasing transparency with increasing temperature within a defined temperature range due to physicochemical interactions with the polymer matrix to be doped. Likewise, the invention relates to composite systems which have a polymer matrix doped with the doping capsules. The capsules according to the invention are used for sun protection or heat reflection.Type: GrantFiled: March 24, 2016Date of Patent: November 20, 2018Assignee: Fraunhofer-Gesellschaft zur förderung der angewandten Forschung e.V.Inventors: Arno Seeboth, Olaf Mühling, Ralf Ruhmann
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Publication number: 20160202500Abstract: The invention relates to doping capsules which have a substance which displays a decreasing transparency with increasing temperature within a defined temperature range due to physicochemical interactions with the polymer matrix to be doped. Likewise, the invention relates to composite systems which have a polymer matrix doped with the doping capsules. The capsules according to the invention are used for sun protection or heat reflection.Type: ApplicationFiled: March 24, 2016Publication date: July 14, 2016Applicant: FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.Inventors: Arno SEEBOTH, Olaf MÜHLING, Ralf RUHMANN
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Patent number: 9193863Abstract: The invention relates to a thermochromic material comprising at least one biopolymer, at least one natural dye and at least one reaction medium, selected from the group of fatty acids and derivatives thereof, gallic acid and derivatives thereof and mixtures thereof. The thermochromic material according to the invention is completely based on non-toxic, natural products. Processing into materials or molded articles can occur, according to the invention, by means of conventional extrusion technology in the form of flat film, blown film or sheets or multi-wall sheets. The thermochromic material can be used in particular in the food industry and medical technology.Type: GrantFiled: August 8, 2013Date of Patent: November 24, 2015Assignee: FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.Inventors: Detlef Lötzsch, Ralf Ruhmann, Arno Seeboth
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Publication number: 20150329715Abstract: Polymer particles having a mean primary particle diameter d50 between 50 nm and 10 pm based on the total weight, containing: A. 10 to 100% by weight of a polymer phase A, obtainable by free-radical copolymerization of an oil-in-water miniemulsion having a monomer mixture as oil phase, containing i) 30 to 99.9% by weight of one or more mono-ethylenically unsaturated monomers II having at least one C12-C48-n-alkyl side chain, ii) 0 to 60% by weight of one or more mono-ethylenically unsaturated monomers II having at least one C1-C11-n-alkyl and/or one C3-C48-i-alkyl side chain, iii) 0.1 to 20% by weight of one or more monomers III having at least two non-conjugated ethylenic double bonds, iv) 0 to 69.9% by weight of one or more (hetero)aromatic, mono-ethylenically unsaturated monomers IV, v) 0 to 40% by weight of one or more other mono-ethylenically unsaturated monomers V; and B.Type: ApplicationFiled: December 19, 2013Publication date: November 19, 2015Inventors: Jörg Ulrich Zilles, Dirk Kruber, Arno Seeboth, Olaf Mühling, Ralf Ruhmann
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Publication number: 20150247001Abstract: The invention relates to a thermochromic material comprising at least one biopolymer, at least one natural dye and at least one reaction medium, selected from the group of fatty acids and derivatives thereof, gallic acid and derivatives thereof and mixtures thereof. The thermochromic material according to the invention is completely based on non-toxic, natural products. Processing into materials or molded articles can occur, according to the invention, by means of conventional extrusion technology in the form of flat film, blown film or sheets or multi-wall sheets. The thermochromic material can be used in particular in the food industry and medical technology.Type: ApplicationFiled: August 8, 2013Publication date: September 3, 2015Applicant: FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.Inventors: Detlef Lötzsch, Ralf Ruhmann, Arno Seeboth
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Publication number: 20150119520Abstract: The invention relates to a method for producing thermatropic particles for doping polymer matrices, and to such doped polymers. The doped polymer matrices according to the invention can be used as sun protection, in the form of varnishes, coatings, resins, thermosets, or thermoplastics, for example.Type: ApplicationFiled: March 18, 2013Publication date: April 30, 2015Inventors: Arno Seeboth, Ralf Ruhmann, Olaf Muhling, Jorg-Ulrich Zilles, Dirk Kruber
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Patent number: 8303857Abstract: The invention relates to a composite with inverse thermochromic properties, the composite changing from a colorless into a colored state with increasing temperature. The composite thereby contains a colorant, a developer and a fluxing agent and also an inorganic filler. The invention likewise relates to a composite material which contains a polymer-based matrix into which at least one composite with inverse thermochromic properties is doped. These composite materials are used in the field of sensor technology, solar technology, transport and communications technology and medical technology.Type: GrantFiled: April 16, 2008Date of Patent: November 6, 2012Assignee: Fraunhofer-Gesellschaft zur Forderung der angewandten Forschung e.V.Inventors: Arno Seeboth, Olaf Mühling, Ralf Ruhmann, Renate Vetter
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Publication number: 20120043491Abstract: The invention relates to doping capsules which have a substance which displays a decreasing transparency with increasing temperature within a defined temperature range due to physicochemical interactions with the polymer matrix to be doped. Likewise, the invention relates to composite systems which have a polymer matrix doped with the doping capsules. The capsules according to the invention are used for sun protection or heat reflection.Type: ApplicationFiled: December 15, 2008Publication date: February 23, 2012Applicant: Fraunhofer-Gesellschaft Zur Forderung Der Angewandten Forschung E.V.Inventors: Arno Seeboth, Olaf Mühling, Ralf Ruhmann
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Publication number: 20100181541Abstract: The invention relates to a composite with inverse thermochromic properties, the composite changing from a colourless into a coloured state with increasing temperature. The composite thereby contains a colourant, a developer and a fluxing agent and also an inorganic filler. The invention likewise relates to a composite material which contains a polymer-based matrix into which at least one composite with inverse thermochromic properties is doped. These composite materials are used in the field of sensor technology, solar technology, transport and communications technology and medical technology.Type: ApplicationFiled: April 16, 2008Publication date: July 22, 2010Applicant: FRAUNHOFER-GESELLSCHAFT ZUR FÕRDERUNG DER ANGEWAND ANGEWANDTEN FORSCHUNG e .V.Inventors: Arno Seeboth, Olaf Mühling, Ralf Ruhmann, Renate Vetter
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Patent number: 6620920Abstract: The invention provides an optical method which permits, with the aid of 6 simple measurements, a conclusion regarding the suitability of antennas (groups which can absorb electromagnetic radiation) for incorporation into photoaddressable polymers.Type: GrantFiled: October 14, 1999Date of Patent: September 16, 2003Assignee: Bayer AktiengesellschaftInventors: Horst Berneth, Uwe Claussen, Serguei Kostromine, Ralf Neigl, Joachim Rübner, Ralf Ruhmann
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Patent number: 6046290Abstract: The invention provides an optical method which permits, with the aid of 6 simple measurements, a conclusion regarding the suitability of antennas (groups which can absorb electromagnetic radiation) for incorporation into photoaddressable polymers.Type: GrantFiled: August 4, 1997Date of Patent: April 4, 2000Assignee: Bayer AktiengesellschaftInventors: Horst Berneth, Uwe Claussen, Serguei Kostromine, Ralf Neigl, Joachim Rubner, Ralf Ruhmann
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Patent number: 5858585Abstract: The light-induced modification in a side-chain polymer containing at least one side group whose configuration can be modified induced by light and at least one permanently shape-anisotropic side group can be amplified by warming to a temperature between the glass transition temperature and the clearing point. This effect opens up new aspects for optical data storage.Type: GrantFiled: February 28, 1997Date of Patent: January 12, 1999Assignee: Bayer AktiengesellschaftInventors: Dietrich Haarer, Thomas Bieringer, Claus Dieter Eisenbach, Karl Fischer, Ralf Ruhmann, Roland Wuttke, Joachim Stumpe, Thomas Fischer, Lutz Laser, Michael Rutloh, Uwe Claussen
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Patent number: 5641846Abstract: Side-group polymers whose permanently shape-anisotropic side groups carry lateral substituents are particularly suitable, owing to their excellent properties, for optical components which can be employed, in particular, in optical data storage and transfer.Type: GrantFiled: September 22, 1995Date of Patent: June 24, 1997Assignee: Bayer AktiengesellschaftInventors: Thomas Bieringer, Uwe Gessner, Dietrich Haarer, Joachim Rubner, Roland Wuttke, Uwe Claussen, Ralf Ruhmann, Horst Berneth, Sergei Kostromin, Ralf Neigl
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Patent number: 5543267Abstract: Flat materials made from a polymer with a backbone and side groups branching off the backbone (side group polymer), which polymer has the following structural features (1) to (3):(1) the side group polymer contains at least one photoinducibly configuration-changing side group;(2) the side group polymer contains at least one permanently conformationally anisotropic side group with high anisotropy of molecular polarisability which differs from (1);(3) the side group polymer contains flexible spacer groups between the backbone and the side groups (1) and (2);wherein the flat material in the glassy state of the side group polymers is optically isotropic, transparent, non-scattering and amorphous before irradiation and, after irradiation, is transparent and durably birefringent and dichroic due to a reversible, photoinduced alignment of the side groups (1) and (2) in the glassy state, may be purposefully modified in terms of their optical properties by the action of light.Type: GrantFiled: March 21, 1994Date of Patent: August 6, 1996Assignee: Agfa-Gevaert AGInventors: Joachim Stumpe, Valery Shibaev, Sergei Kostromin, Sergei Ivanov, Thomas Fischer, Lutz L asker, Ralf Ruhmann, Uwe Claussen