Patents by Inventor Frank Louwet
Frank Louwet 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).
-
Patent number: 7122130Abstract: A method for preparing a composition containing between 0.08 and 3.Type: GrantFiled: July 19, 2004Date of Patent: October 17, 2006Assignee: Agfa GevaertInventors: Jean-Piere Tahon, Roger Van den Bogaert, Bert Groenendaal, Frank Louwet
-
Patent number: 7105620Abstract: An aqueous dispersion of a copolymer of at least one 3,4-alkylenedioxythiophene compound with a solubility in water at 25° C. of less than 2.2 g/L with at least one 3,4-alkylenedioxythiophene compound with a solubility in water at 25° C. of at least 2.2 g/L and a polyanion; a preparation process therefor; its use for coating; a printing ink containing the aqueous dispersion; an electro-conductive layer containing a copolymer of at least one 3,4-alkylenedioxythiophene compound with a solubility in water at 25° C. of less than 2.2 g/L with at least one 3,4-alkylenedioxythiophene compound with a solubility in water at 25° C. of at least 2.2 g/L and a polyanion derived from an aqueous dispersion thereof; and an antistatic layer containing a copolymer of at least one 3,4-alkylenedioxythiophene compound with a solubility in water at 25° C. of less than 2.2 g/L with at least one 3,4-alkylenedioxythiophene compound with a solubility in water at 25° C. of at least 2.Type: GrantFiled: May 12, 2004Date of Patent: September 12, 2006Assignee: Agfa GevaertInventors: Bert Groenendaal, Frank Louwet
-
Patent number: 7097961Abstract: A substantially light-insensitive black and white monosheet thermographic recording material comprising a support and a thermosensitive element, said thermosensitive element containing a substantially light-insensitive organic silver salt, an organic reducing agent therefor in thermal working relationship therewith, at least one binder and at least one stabilizer represented by formula (I): wherein R1, R2, R3 and R4 are independently selected from the group consisting of a hydrogen atom, halogen atoms and aliphatic, alkoxy, nitro, acyl, sulfonyl, nitrile, alkaryl, aryl, amino, thioalkyl, aldehyde, urea, —O—(C?O)-alkyl, —O—(C?O)-aryl, —O—(C?O)—O-alkyl, —O—(C?O)—O-aryl, —NH—(C?O)-alkyl, —NH—(C?O)-aryl, —(C?O)—NH-alkyl, —(C?O)—NH-aryl, —NH—(SO2)-alkyl, —NH—(SO2)-aryl, —(SO2)—NH-alkyl, —(SO2)—NH-aryl groups; X is represented by -A(-M)n or is selected from the group consisting of substituted aliphatic groups, unsubstituted aliphatic groups, substituted cycloaliphatic groups, unsubstituted cycloaliphatic groupsType: GrantFiled: May 12, 2005Date of Patent: August 29, 2006Assignee: Agfa GevaertInventors: Frank Louwet, Johan Loccufier
-
Patent number: 7094865Abstract: A thiophene compound represented by formula (I): in which: A represents a C2–C5 alkylene bridge; R represents a stereoselectively substituted, linear or branched C2–C24 alkyl, C3–C18 cycloalkyl, C1–C18 alkoxy or polyethyleneoxide group, optionally substituted with at least one substituent selected from the group consisting of an alcohol, amide, ether, ester or sulfonate group; or an optionally substituted aryl group having at least one chiral center substituted at said C2–C5 alkylene bridge; polymers derived therefrom; a process for polymerizing a thiophene according to formula (I), optionally chemically or electrochemically; and dispersions, pastes and layers containing polymers derived therefrom.Type: GrantFiled: March 22, 2002Date of Patent: August 22, 2006Assignee: Agfa GevaertInventors: Lambertus Groenendaal, Frank Louwet, Gianni Zotti
-
Patent number: 7048874Abstract: A process for preparing an aqueous or non-aqueous solution or dispersion of a polythiophene or thiophene copolymer, containing structural units according to formula (I): in which R1 and R2 independently of one another represent hydrogen or a C1-5-alkyl group or together form an optionally substituted C1-5-alkylene residue, comprising the step of: preparing the polythiophene or thiophene copolymer with an initiator in a reaction medium in the presence of polyanions under oxidizing or reducing conditions under an inert atmosphere such that when said initiator is added less than 3 mg of oxygen per litre of the reaction medium is present in the reaction medium; an aqueous or non-aqueous solution or dispersion prepared therewith; the use of an aqueous or non-aqueous dispersion or solution comprising the aqueous or non-aqueous solution or dispersion of a polythiophene or thiophene copolymer for coating an object; a printable paste containing the aqueous or non-aqueous solution or dispersion of a polythiophene oType: GrantFiled: December 3, 2002Date of Patent: May 23, 2006Assignee: AGFA-GevaertInventors: Frank Louwet, Bert Groenendaal
-
Publication number: 20060100102Abstract: A compound represented by formula (I): wherein X is a carbonyl or sulfonyl group; R2 is an alkyl, alkaryl or aryl group; and R1 is an amino group or an N-alkyl-amino group if Y is a halogen atom, an alkyl group or a hydroxy group; and R1 is a halogen atom, an alkyl group or a hydroxy group if Y is an amino group or an N-alkyl-amino group; and a thermographic recording material comprising a support and a thermosensitive element, the thermosensitive element comprising at least one substantially light-insensitive organic silver salt, at least one organic reducing agent therefor in thermal working relationship therewith, at least one binder and at least one compound represented by formula (I).Type: ApplicationFiled: October 24, 2005Publication date: May 11, 2006Applicant: AGFA-GEVAERTInventors: Carlo Uyttendaele, Frank Louwet, Johan Loccufier
-
Publication number: 20060100103Abstract: A thermographic recording material comprising a support and a thermosensitive element, the thermosensitive element comprising at least one substantially light-insensitive organic silver salt, at least one organic reducing agent therefor in thermal working relationship therewith, at least one binder and at least one toning agent represented by formula (I): wherein X represents the optionally substituted atoms necessary to form a 6-membered ring.Type: ApplicationFiled: October 24, 2005Publication date: May 11, 2006Applicant: AGFA-GEVAERTInventors: Carlo Uyttendaele, Johan Loccufier, Frank Louwet
-
Patent number: 7026079Abstract: A process for preparing a substantially transparent conductive layer configuration on a support, the layer configuration comprising in any order at least a first layer containing an intrinsically conductive polymer optionally containing structural units represented by formula (I): wherein n is larger than 1 and each of R1 and R2 independently represents hydrogen or an optionally substituted C1-4 alkyl group or together represent an optionally substituted C1-4 alkylene group or an optionally substituted cycloalkylene group, preferably an ethylene group, an optionally alkyl-substituted methylene group, an optionally C1-12 alkyl- or phenyl-substituted ethylene group, a 1,3-propylene group or a 1,2-cyclohexylene group; and a second layer consisting of a non-continuous layer of conductive silver, the process comprising the step of: preparing the second layer by a photographic process; and light emitting diodes, photovoltaic devices, transistors and electroluminescent devices comprising a layer configuration prType: GrantFiled: August 21, 2003Date of Patent: April 11, 2006Assignee: AGFA GevaertInventors: Frank Louwet, Tom Cloots, Hieronymus Andriessen
-
Publication number: 20060027791Abstract: A method for preparing a composition containing between 0.08 and 3.Type: ApplicationFiled: July 12, 2005Publication date: February 9, 2006Applicant: AGFA-GEVAERTInventors: Jean-Pierre Tahon, Roger Van den Bogaert, Bert Groenendaal, Frank Louwet
-
Patent number: 6995223Abstract: An aqueous dispersion of a copolymer of at least one 3,4-alkylenedioxythiophene compound with a solubility in water at 25° C. of less than 2.2 g/L with at least one 3,4-alkylenedioxythiophene compound with a solubility in water at 25° C. of at least 2.2 g/L and a polyanion; a preparation process therefor; its use for coating; a printing ink containing the aqueous dispersion; an electro-conductive layer containing a copolymer of at least one 3,4-alkylenedioxythiophene compound with a solubility in water at 25° C. of less than 2.2 g/L with at least one 3,4-alkylenedioxythiophene compound with a solubility in water at 25° C. of at least 2.2 g/L and a polyanion derived from an aqueous dispersion thereof; and an antistatic layer containing a copolymer of at least one 3,4-alkylenedioxy-thiophene compound with a solubility in water at 25° C. of less than 2.2 g/L with at least one 3,4-alkylenedioxythiophene compound with a solubility in water at 25° C. of at least 2.Type: GrantFiled: December 17, 2002Date of Patent: February 7, 2006Assignee: Agfa-GevaertInventors: Bert Groenendaal, Frank Louwet
-
Publication number: 20050255415Abstract: A substantially light-insensitive black and white monosheet thermographic recording material comprising a support and a thermosensitive element, said thermosensitive element containing a substantially light-insensitive organic silver salt, an organic reducing agent therefor in thermal working relationship therewith, at least one binder and at least one stabilizer represented by formula (I): wherein R1, R2, R3 and R4 are independently selected from the group consisting of a hydrogen atom, halogen atoms and aliphatic, alkoxy, nitro, acyl, sulfonyl, nitrile, alkaryl, aryl, amino, thioalkyl, aldehyde, urea, —O—(C?O)-alkyl, —O—(C?O)-aryl, —O—(C?O)—O-alkyl, —O—(C?O)—O-aryl, —NH—(C?O)-alkyl, —NH—(C?O)-aryl, —(C?O)—NH-alkyl, —(C?O)—NH-aryl, —NH—(SO2)-alkyl, —NH—(SO2)-aryl, —(SO2)—NH-alkyl, —(SO2)—NH-aryl groups; X is represented by -A(-M)n or is selected from the group consisting of substituted aliphatic groups, unsubstituted aliphatic groups, substituted cycloaliphatic groups, unsubstituted cycloaliphatic groupType: ApplicationFiled: May 12, 2005Publication date: November 17, 2005Applicant: Agfa-Gevaert N.V.Inventors: Frank Louwet, Johan Loccufier
-
Publication number: 20050245723Abstract: A process for preparing an aqueous or non-aqueous solution or dispersion of a polythiophene or thiophene copolymer, containing structural units according to formula (I): in which R1 and R2 independently of one another represent hydrogen or a C1-5-alkyl group or together form an optionally substituted C1-5-alkylene residue, comprising the step of: preparing the polythiophene or thiophene copolymer with an initiator in a reaction is medium in the presence of polyanions under oxidizing or reducing conditions under an inert atmosphere such that when said initiator is added less than 3 mg of oxygen per litre of the reaction medium is present in the reaction medium; an aqueous or non-aqueous solution or dispersion prepared therewith; the use of an aqueous or non-aqueous dispersion or solution comprising the aqueous or non-aqueous solution or dispersion of a polythiophene or thiophene copolymer for coating an object; a printable paste containing the aqueous or non-aqueous solution or dispersion of a polythiopheType: ApplicationFiled: June 10, 2005Publication date: November 3, 2005Applicant: Agfa-GevaertInventors: Frank Louwet, Bert Groenendaal
-
Patent number: 6927298Abstract: A 3,4-alkylenedioxythiophenedioxide compound represented by formula (I): in which: A represents a C1-5-alkylene bridge; R represents an optionally substituted C1-24-alkyl, C3-18-cycloalkyl, C1-18-alkoxy or polyethylene oxide group (optionally with at least one substituent selected from the group consisting of an alcohol, amide, ether, ester or sulphonate group) or an optionally substituted aryl group; a polymer comprising monomeric units represented by formula (I); an aqueous dispersion of a polymer comprising monomeric units corresponding to at least one compound according to formula (I) and a polyanion; a chemical polymerization process for preparing the aqueous dispersion comprising the steps of: (i) providing a solution of a polyanion; (ii) adding a compound according to formula (I) and a thiophene or pyrrole compound to the solution provided in step (i); and (iii) adding an oxidizing or reducing system to the mixture provided in step (ii); a printable paste containing the aqueous dispersion; an electType: GrantFiled: August 27, 2003Date of Patent: August 9, 2005Assignee: Agfa-GevaertInventors: Bert Groenendaal, Frank Louwet, Hieronymus Andriessen
-
Patent number: 6890584Abstract: A non-dye containing flexographic ink containing a polymer or copolymer of a 3,4-dialkoxythiophene in which the two alkoxy groups may be the same or different or together represent an optionally substituted oxy-alkylene-oxy bridge, a polyanion and a latex binder in a solvent or aqueous medium, characterized in that the polymer or copolymer of a 3,4-dialkoxythiophene is present in a concentration of at least 0.1% by weight in the ink and that the ink is capable of producing a colorimetrically additive transparent print; a method of preparing the flexographic ink; and a flexographic printing process therewith.Type: GrantFiled: June 20, 2002Date of Patent: May 10, 2005Assignee: Agfa-GevaertInventors: Luc Leenders, Eddie Daems, Frank Louwet, Rafaël Samijn, Jean-Pierre Tahon, Roger Van den Bogaert
-
Patent number: 6887556Abstract: A material for making a conductive pattern, the material comprising a support and a heat-differentiable element, the heat-differentiable element comprising an outermost layer containing a polyanion and an intrinsically conductive polymer and optionally a second layer contiguous with the outermost layer, characterized in that the outermost layer and/or the optional second layer contains hydrophobic thermocoagulable latex particles in a weight ratio range with respect to the intrinsically conductive polymer in the range of 20:1 to 1:5, the hydrophobic thermocoagulable latex particles are capable upon heating of increasing the conductivity of the heated parts of the outermost layer relative to the unheated parts of the outermost layer and/or changing the removability of the heated parts of the outermost layer relative to the unheated parts of the outermost layer and the heat-differentiable element does not comprise a di- or polyhydroxy organic compound or an aprotic compound with a dielectric constant, ?, ?15; aType: GrantFiled: December 11, 2002Date of Patent: May 3, 2005Assignee: Agfa-GevaertInventors: Johan Lamotte, Frank Louwet, Tom Cloots, Huub Van Aert
-
Publication number: 20050040372Abstract: A method for preparing a composition containing between 0.08 and 3.Type: ApplicationFiled: July 19, 2004Publication date: February 24, 2005Applicant: AGFA-GEVAERTInventors: Jean-Piere Tahon, Roger Van den Bogaert, Bert Groenendaal, Frank Louwet
-
Publication number: 20050042556Abstract: A process for preparing a substantially transparent conductive layer configuration on a support, the layer configuration comprising in any order at least a first layer containing an intrinsically conductive polymer optionally containing structural units represented by formula (I): wherein n is larger than 1 and each of R1 and R2 independently represents hydrogen or an optionally substituted C1-4 alkyl group or together represent an optionally substituted C1-4 alkylene group or an optionally substituted cycloalkylene group, preferably an ethylene group, an optionally alkyl-substituted methylene group, an optionally C1-12 alkyl- or phenyl-substituted ethylene group, a 1,3-propylene group or a 1,2-cyclohexylene group; and a second layer consisting of a non-continuous layer of conductive silver, the process comprising the step of: preparing the second layer by a photographic process; and light emitting diodes, photovoltaic devices, transistors and electroluminescent devices comprising a layer configuration pType: ApplicationFiled: August 21, 2003Publication date: February 24, 2005Applicant: AFGA-GEVAERTInventors: Frank Louwet, Tom Cloots, Hieronymus Andriessen
-
Patent number: 6852830Abstract: A thiophene compound represented by formula (I): in which A represents a C1-5-alkylene bridge; R represents a —R1—(C?O)—R2 group; —R1— represents a —R3— or —R4—X—R5— group; R2 is hydrogen, a hydroxy group, a thiol group, —NR6R7, —OR8 or a —SR9 group; R3, R4 and R5 are independently an alkylene group or an arylene group; X is a —O—, —S— or ?NR10; R6 and R7 are independently hydrogen, an optionally substituted amino group or an optionally substituted alkyl group; R8 and R9 are independently an optionally substituted alkyl group (optionally with at least one substituent selected from the group consisting of an alcohol, amide, ether, ester or sulfonate group), an optionally substituted aryl group or a —SiR11R12R13 group; R10 is an alkyl, aryl or acyl group; and R11, R12 and R13 are independently an optionally substituted alkoxy or alkyl group; polymers derived therefrom; a process for polymerizing a thiophene according to formula (I), optionally chemically or electrochemically; and solutions, dispersions, pasType: GrantFiled: December 16, 2002Date of Patent: February 8, 2005Assignee: Agfa-GevaertInventors: Bert Groenendaal, Frank Louwet
-
Publication number: 20050009986Abstract: An aqueous dispersion of a copolymer of at least one 3,4-alkylenedioxythiophene compound with a solubility in water at 25° C. of less than 2.2 g/L with at least one 3,4-alkylenedioxythiophene compound with a solubility in water at 25° C. of at least 2.2 g/L and a polyanion; a preparation process therefor; its use for coating; a printing ink containing the aqueous dispersion; an electro-conductive layer containing a copolymer of at least one 3,4-alkylenedioxythiophene compound with a solubility in water at 25° C. of less than 2.2 g/L with at least one 3,4-alkylenedioxythiophene compound with a solubility in water at 25° C. of at least 2.2 g/L and a polyanion derived from an aqueous dispersion thereof; and an antistatic layer containing a copolymer of at least one 3,4-alkylenedioxy-thiophene compound with a solubility in water at 25° C. of less than 2.2 g/L with at least one 3,4-alkylenedioxythiophene compound with a solubility in water at 25° C. of at least 2.Type: ApplicationFiled: May 12, 2004Publication date: January 13, 2005Applicant: AGFA-GEVAERTInventors: Bert Groenendaal, Frank Louwet
-
Publication number: 20050003315Abstract: A substantially light-insensitive monosheet thermographic recording material comprising a support and on one side of the support a thermosensitive element, the thermosensitive element comprising at least one substantially light-insensitive silver salt of a carboxylic acid, at least one reducing agent therefor in thermal working relationship therewith and at least one binder, the at least one binder comprising at least one first polymer consisting of vinyl aceto-acetal monomer units, vinyl butyral monomer units and monomer units selected from the group consisting of, vinyl alcohol, vinyl acetate and itaconic acid monomer units, wherein the weight ratio of the at least one binder to the light-insensitive silver salt(s) of a carboxylic acid in the thermosensitive element is greater than 1.5; and the at least one binder optionally contains less than 40% by weight of a second polymer consisting of vinyl butyral monomer units and optionally vinyl alcohol and/or vinyl acetate monomer units.Type: ApplicationFiled: June 2, 2004Publication date: January 6, 2005Applicant: AGFA-GEVAERTInventors: Carlo Uyttendaele, Ivan Hoogmartens, Huub Van Aert, Frank Louwet