Patents by Inventor Fritz-Feo Grabley
Fritz-Feo Grabley 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: 6537722Abstract: A recording material for producing offset printing plates includes: a support having a hydrophilic surface, and an infrared-imageable layer including a) a component which is capable of absorbing infrared radiation and converting the infrared radiation to heat, b) a compound which is capable of releasing acid under the action of the heat generated by component a), and c) a polymeric binder having at least one group which is cleaved by the acid released from the compound b), and at least one hydrophilic group, and wherein the layer becomes soluble in an aqueous-alkaline developer in areas struck by infrared radiation.Type: GrantFiled: July 7, 1998Date of Patent: March 25, 2003Assignee: Afga-Gevaert AGInventors: Mathias Eichhorn, Karin Maerz, Fritz-Feo Grabley
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Publication number: 20020061460Abstract: A recording material for producing offset printing plates includes: a support having a hydrophilic surface, and an infrared-imageable layer including a) a component which is capable of absorbing infrared radiation and converting the infrared radiation to heat, b) a compound which is capable of releasing acid under the action of the heat generated by component a), and c) a polymeric binder having at least one group which is cleaved by the acid released from the compound b), and at least one hydrophilic group, and wherein the layer becomes soluble in an aqueous-alkaline developer in areas struck by infrared radiation.Type: ApplicationFiled: July 7, 1998Publication date: May 23, 2002Inventors: MATHIAS EICHHORN, KARIN MAERZ, FRITZ-FEO GRABLEY
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Patent number: 6238838Abstract: A positive-working, radiation-sensitive mixture which contains an organic, polymeric binder which is insoluble in water but soluble or at least swellable in aqueous alkaline solution and at least one IR-absorbing dye, is described. A daylight-insensitive recording material which can be provided with an image using IR radiation and has a substrate and a layer comprising the mixture is also disclosed. After imagewise exposure, in particular to IR laser beams, and development with an aqueous alkaline solution, an offset printing plate can be formed therefrom.Type: GrantFiled: July 29, 1999Date of Patent: May 29, 2001Assignee: Afga GevaertInventors: Otfried Gaschler, Andreas Elsaesser, Fritz-Feo Grabley, Joerg Jung, Engelbert Pliefke, Hans-Joachim Schlosser
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Patent number: 6207287Abstract: A dummy plate is provided for offset printing which essentially consists of a plate-, sheet- or band-form, mechanically and/or electro-chemically roughened, anodically oxidized and optionally hydrophilized aluminium support and a non-photosensitive, water-soluble protective layer applied thereto, characterized in that the layer contains a water-soluble organic compound which contains at least one OH- or NH-acidic group having a pKa value of ≦8 as acid or salt, and has a layer thickness which is smaller than the average roughness ra of the support material, determined by optical means. Even after extended storage at elevated temperature, the dummy plate can easily be used without an additional development step and exhibits no tendency to stick.Type: GrantFiled: July 30, 1998Date of Patent: March 27, 2001Assignee: AGFA-GevaertInventors: Cornelia Alba, Andreas Elsässer, Fritz-Feo Grabley, Klaus Jörg, Peter Lehmann
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Patent number: 6165685Abstract: The invention relates to a recording material having a substrate and a radiation-sensitive, water-insoluble layer which contains a component absorbing IR radiation and which, after the action of infrared radiation, becomes soluble or at least swellable in an aqueous alkaline developer. A top layer which is opaque to white light but transparent to radiation in the IR range and can be removed with water or an aqueous solution is present on the radiation-sensitive layer. The recording material is substantially insensitive to daylight. By imagewise exposure to IR radiation and subsequent development with an aqueous alkaline developer, it is possible to produce a printing plate for offset printing from the recording material. If the top layer is washed off beforehand, the recording can also be carried out using conventional UV radiation.Type: GrantFiled: September 8, 1998Date of Patent: December 26, 2000Assignee: Agfa-Gevaert N.V.Inventors: Karin Maerz, Helmut Haberhauer, Andreas Elsaesser, Hans-Joachim Schlosser, Fritz-Feo Grabley
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Patent number: 6100004Abstract: A positive-working or negative-working radiation-sensitive mixture includes as an IR absorbing component a carbon black pigment having a primary particle size smaller than 80 nm. The carbon black pigment is predispersed in a polymer containing acidic units having a pK.sub.a of less than 13. The radiation-sensitive component may include an ester of (i) a 1,2-naphthoquinone-2-diazide-4-sulfonic acid or a 1,2-naphthoquinone-2-diazide-5-sulfonic acid and (ii) a compound having at least one phenolic hydroxyl group, such as 3 to 6 phenolic hydroxyl groups. After imagewise radiation exposure, the recording material including the radiation-sensitive mixture can be developed without difficulties in an aqueous alkaline solution without leaving residual coating on the areas that became soluble or that remained soluble upon exposure.Type: GrantFiled: March 11, 1998Date of Patent: August 8, 2000Assignee: Agfa-Gevaert N.V.Inventors: Andreas Elsaesser, Otfried Gaschler, Helmut Haberhauer, Mathias Eichhorn, Fritz-Feo Grabley, Thomas Leichsenring, Gabor I. Koletar, Douglas A. Seeley
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Patent number: 6048624Abstract: A dummy plate is provided for offset printing which essentially consists of a plate-, sheet- or band-form, mechanically and/or electro-chemically roughened, anodically oxidized and optionally hydrophilized aluminium support and a non-photosensitive, water-soluble protective layer applied thereto, characterized in that the layer contains a water-soluble organic compound which contains at least one OH- or NH-acidic group having a pKa value of .ltoreq.8 as acid or salt, and has a layer thickness which is smaller than the average roughness ra of the support material, determined by optical means. Even after extended storage at elevated temperature, the dummy plate can easily be used without an additional development step and exhibits no tendency to stick.Type: GrantFiled: July 30, 1998Date of Patent: April 11, 2000Assignee: AGFA-GevaertInventors: Cornelia Alba, Andreas Elsasser, Fritz-Feo Grabley, Klaus Jorg, Peter Lehmann
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Patent number: 5924364Abstract: The invention relates to a recording material having a plate- or sheet-like substrate, at least one IR-absorbing layer, which comprises at least one IR-absorbing component and at least one polymeric, organic binder and decomposes under the action of IR laser radiation or changes so that its adhesion to the silicone top layer decreases, and a top layer comprising a cured silicone rubber. The substrate comprises an oxidizable metal or one of its alloys and, at least on the side facing the IR-absorbing layer, is roughened and is covered with a layer of an oxide of the metal. The invention also relates to a process for the production of a waterless offset printing plate and to the printing plate itself which is produced from the recording material according to the invention and in which the hydrophilic surface of the oxide layer is ink-carrying and the oleophobic top layer is ink-repellent.Type: GrantFiled: January 16, 1998Date of Patent: July 20, 1999Assignee: Agfa-Gevaert N.V.Inventors: Fritz-Feo Grabley, Willi-Kurt Gries, Hans-Joachim Schlosser
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Patent number: 5744272Abstract: An electrophotographic recording material comprising:an electrically conductive base layer;a photoconductive layer which can be de-coated with alkaline solutions, the photoconductive layer comprising an organic photoconductor, a sensitizer and a binder comprising a mixture of:a) a copolymer comprising units composed of a first vinyl aromatic compound and units composed of maleic anhydride and/or a maleic partial ester, andb) a copolymer comprising units composed of a second vinyl aromatic compound and units of (meth)acrylic acid.Type: GrantFiled: March 25, 1996Date of Patent: April 28, 1998Assignee: AGFA-Gevaert AGInventors: Andreas Elsaesser, Werner Frass, Fritz-Feo Grabley, Gabor Jerling
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Patent number: 5100588Abstract: The process for the preparation of acyloxybenzenesulfonic acids of the general formula ##STR1## in which R denotes a (C.sub.1 -C.sub.17)-alkyl or (C.sub.2 -C.sub.17)-alkenyl radical, or alkali metal, alkaline earth metal or ammonium salts thereof, is carried out in the following stages: (a) sulfonation of phenol, (b) heat treatment of the phenolsulfonic acid formed as the intermediate product, (c) esterification of the phenolsulfonic acid and, if appropriate, (d) neutralization of the resulting (C.sub.2 -C.sub.18)-acyloxybenzenesulfonic acid. As a result of the incorporation of stage (b), the process affords products in which the proportion of the 1,4-isomer compared with the 1,2-isomer is markedly increased, as a result of which these products can be used, in particular, as perborate activators in detergents.Type: GrantFiled: February 9, 1988Date of Patent: March 31, 1992Assignee: Hoechst AktiengesellschaftInventors: Fritz-Feo Grabley, Gerd Reinhardt, Roland Steinl
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Patent number: 5045222Abstract: Use of triacylated ethanolamines as liquid, water-miscible peroxide activatorsTriacylated ethanolamines of the formula(RCO)(R.sub.1 CO)N-(CH.sub.2).sub.2 -OCOR.sub.2where R, R.sub.1 and R.sub.2, which may be identical to or different from one another, are each alkyl, alkenyl or aryl, and the total number of carbon atoms in the molecule is from 8 to 14, are liquid and readily water-miscible. Owing to these properties, they are very useful as peroxide activators in liquid detergent compositions.Type: GrantFiled: December 13, 1989Date of Patent: September 3, 1991Assignee: Hoechst AktiengesellschaftInventors: Hajime Endo, Hanspeter Gethoffer, Fritz-Feo Grabley, Gerd Reinhardt
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Patent number: 4778629Abstract: A process for the preparation of acyloxybenzenesulfonic acids and salts thereof, of the formula ##STR1## in which R is C.sub.1 -C.sub.17 -alkyl or C.sub.2 -C.sub.17 -alkenyl and M is an alkali or alkaline earth metal, ammonium or hydrogen, including the stages of (a) sulfonation of phenol, if appropriate (b) thermal treatment of the sulfonated phenol, (c) esterification of the sulfonated phenol and if appropriate (d) neutralization of the ester, wherein the sulfonation of the phenol is carried out with sulfuric acid or oleum and the water of reaction is removed during or after stage (b) by distillation and/or by reaction with a dehydrating agent.Type: GrantFiled: October 23, 1986Date of Patent: October 18, 1988Assignee: Hoechst AktiengesellschaftInventors: Fritz-Feo Grabley, Gerd Reinhardt, Georg Bader, Walter Rupp