Patents by Inventor Gerhard Hahn
Gerhard Hahn 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: 11827806Abstract: Substance combinations are disclosed which include urea, at least one chitosan biopolymer having a degree of deacetylation of from 70% to 95%, and at least one dicarboxylic acid in aqueous solution. The substance combinations are useful as primers for the pretreating substrate surfaces, in particular flat or sheet-form, non-metallic substrates, which are provided as carrier materials for vapor phase corrosion inhibitors, to enable subsequent fixing to those substrate surfaces of vapor phase corrosion inhibitors from an aqueous or aqueous-alcoholic solution containing them. Certain embodiments of the substance combination include 0.1-2% by weight chitosan biopolymer, 10-25% by weight urea, and 0.5-2.5% by weight of a dicarboxylic acid, completely dissolved in deionized water. Yet a further, related aspect of the invention relates to a carrier material for vapor phase corrosion inhibitors, wherein the vapor phase corrosion inhibitors are fixed to a substrate surface pretreated with the substance combination.Type: GrantFiled: January 2, 2020Date of Patent: November 28, 2023Assignee: EXCOR Korrosionsforschung GmbHInventors: Georg Reinhard, Peter Neitzel, Frank Fassbender, Gerhard Hahn
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Patent number: 11781067Abstract: Disclosed are combinations of substances for stimulus-dependent release of vapor phase corrosion inhibitors including: (1) a matrix; (2) at least one symmetrical or asymmetrical carboxylic acid anhydride of at least one first carboxylic acid, (3) at least one salt of at least one second, highly volatile corrosion-inhibiting carboxylic acid, wherein (2) is a non-volatile anhydride or an anhydride with low volatility with a vapor pressure of preferably lower than 1×10?3 Pa at 25° C. The combination is effective to release the first carboxylic acid(s) by hydrolysis of the anhydride and release the second carboxylic acid(s) of (3) from its salt by proton transfer from first carboxylic acid(s), so that the second carboxylic acid(s) is/are present as a corrosion inhibitor in the vapor phase. Also disclosed are methods for producing and using the combinations for corrosion protection of conventional industrially used metals, in, e.g., packing, storage and transport processes.Type: GrantFiled: May 13, 2020Date of Patent: October 10, 2023Assignee: EXCOR Korrosionsforschung GmbHInventors: Gregor Wowsnick, Bianka Leitner, Frank Fassbender, Gerhard Hahn
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Publication number: 20200362243Abstract: Disclosed are combinations of substances for stimulus-dependent release of vapor phase corrosion inhibitors including: (1) a matrix; (2) at least one symmetrical or asymmetrical carboxylic acid anhydride of at least one first carboxylic acid, (3) at least one salt of at least one second, highly volatile corrosion-inhibiting carboxylic acid, wherein (2) is a non-volatile anhydride or an anhydride with low volatility with a vapor pressure of preferably lower than 1×10?3 Pa at 25° C. The combination is effective to release the first carboxylic acid(s) by hydrolysis of the anhydride and release the second carboxylic acid(s) of (3) from its salt by proton transfer from first carboxylic acid(s), so that the second carboxylic acid(s) is/are present as a corrosion inhibitor in the vapor phase. Also disclosed are methods for producing and using the combinations for corrosion protection of conventional industrially used metals, in, e.g., packing, storage and transport processes.Type: ApplicationFiled: May 13, 2020Publication date: November 19, 2020Inventors: Gregor WOWSNICK, Bianka LEITNER, Frank FASSBENDER, Gerhard HAHN
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Patent number: 10753000Abstract: The invention relates to corrosion-inhibiting substance combinations capable of evaporation or sublimation, containing at least: (1) substituted 1,4-benzoquinone, (2) aromatic or alicyclic substituted carbamate, (3) polysubstituted phenol, and (4) monosubstituted pyrimidine. These combinations preferably include 1-30 mass % of component (1), 5-40 mass % of component (2), 2-20 mass % of component (3), and 0.5-10 mass % of component (4), each relating to the total quantity of the substance combination. The components can be provided mixed together or dispersed in water, or also pre-mixed in solubilizer that can be mixed with mineral oils and synthetic oils, preferably an arylalkylether alcohol such as, e.g., phenoxyethanol. Such substance combinations can be used as vapor phase corrosion inhibitors in packaging or during storage in closed spaces for protecting common commodity metals such as iron, chrome, nickel, aluminum, copper and their alloys as well as galvanized steels, against atmospheric corrosion.Type: GrantFiled: September 27, 2018Date of Patent: August 25, 2020Assignee: EXCOR KORROSIONSFORSCHUNG GmbHInventors: Georg Reinhard, Peter Neitzel, Frank Fassbender, Gerhard Hahn
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Publication number: 20200216678Abstract: Substance combinations are disclosed which include urea, at least one chitosan biopolymer having a degree of deacetylation of from 70% to 95%, and at least one dicarboxylic acid in aqueous solution. The substance combinations are useful as primers for the pretreating substrate surfaces, in particular flat or sheet-form, non-metallic substrates, which are provided as carrier materials for vapor phase corrosion inhibitors, to enable subsequent fixing to those substrate surfaces of vapor phase corrosion inhibitors from an aqueous or aqueous-alcoholic solution containing them. Certain embodiments of the substance combination include 0.1-2% by weight chitosan biopolymer, 10-25% by weight urea, and 0.5-2.5% by weight of a dicarboxylic acid, completely dissolved in deionized water. Yet a further, related aspect of the invention relates to a carrier material for vapor phase corrosion inhibitors, wherein the vapor phase corrosion inhibitors are fixed to a substrate surface pretreated with the substance combination.Type: ApplicationFiled: January 2, 2020Publication date: July 9, 2020Inventors: Georg REINHARD, Peter NEITZEL, Frank FASSBENDER, Gerhard HAHN
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Patent number: 10301577Abstract: The present invention provides the use of a composition comprising a polyalkyleneimine and/or salts or derivative thereof and an amphoteric polymer for the prevention of corrosion of non-metallic inorganic items during a washing or rinsing process, in particular during an automatic dishwashing process.Type: GrantFiled: July 31, 2015Date of Patent: May 28, 2019Assignee: RECKITT BENCKISER FINISH B.V.Inventors: Nicole Graf, Karlheinz Ulrich Gerhard Hahn
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Publication number: 20190093236Abstract: The invention relates to corrosion-inhibiting substance combinations capable of evaporation or sublimation, containing at least: (1) substituted 1,4-benzoquinone, (2) aromatic or alicyclic substituted carbamate, (3) polysubstituted phenol, and (4) monosubstituted pyrimidine. These combinations preferably include 1-30 mass % of component (1), 5-40 mass % of component (2), 2-20 mass % of component (3), and 0.5-10 mass % of component (4), each relating to the total quantity of the substance combination. The components can be provided mixed together or dispersed in water, or also pre-mixed in solubilizer that can be mixed with mineral oils and synthetic oils, preferably an arylalkylether alcohol such as, e.g., phenoxyethanol. Such substance combinations can be used as vapor phase corrosion inhibitors in packaging or during storage in closed spaces for protecting common commodity metals such as iron, chrome, nickel, aluminum, copper and their alloys as well as galvanized steels, against atmospheric corrosion.Type: ApplicationFiled: September 27, 2018Publication date: March 28, 2019Inventors: Georg REINHARD, Peter NEITZEL, Frank FASSBENDER, Gerhard HAHN
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Patent number: 9862633Abstract: A lithium-containing, transparent glass-ceramic material is provided. The material has low thermal expansion and has an amorphous, lithium-depleted, vitreous surface zone. The zone is at least 50 nm thick on all sides and encloses a crystalline interior, which has high transmission. The material includes a transition region connecting the zone and the interior.Type: GrantFiled: December 29, 2015Date of Patent: January 9, 2018Assignee: SCHOTT AGInventors: Falk Gabel, Otmar Becker, Michael Glasenapp, Jan-Peter Ortmann, Petra Grewer, Veit Luther, Harald Striegler, Dietmar Wennemann, Thomas Schuler, Thoralf Johansson, Helga Goetz, Michael Bug, Guenther Siebenhaar, Gerhard Hahn, Friedrich-Georg Schroeder
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Publication number: 20160130171Abstract: A lithium-containing, transparent glass-ceramic material is provided. The material has low thermal expansion and has an amorphous, lithium-depleted, vitreous surface zone. The zone is at least 50 nm thick on all sides and encloses a crystalline interior, which has high transmission. The material includes a transition region connecting the zone and the interior.Type: ApplicationFiled: December 29, 2015Publication date: May 12, 2016Applicant: Schott AGInventors: Falk GABEL, Otmar BECKER, Michael GLASENAPP, Jan-Peter ORTMANN, Petra GREWER, Veit LUTHER, Harald STRIEGLER, Dietmar WENNEMANN, Thomas SCHULER, Thoralf JOHANSSON, Helga GOETZ, Michael BUG, Guenther SIEBENHAAR, Gerhard HAHN, Friedrich-Georg SCHROEDER
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Patent number: 9249045Abstract: A lithium-containing, transparent glass-ceramic material is provided. The material has low thermal expansion and has an amorphous, lithium-depleted, vitreous surface zone. The zone is at least 50 nm thick on all sides and encloses a crystalline interior, which has high transmission. The material includes a transition region connecting the zone and the interior.Type: GrantFiled: July 7, 2011Date of Patent: February 2, 2016Assignee: SCHOTT AGInventors: Falk Gabel, Otmar Becker, Michael Glasenapp, Jan-Peter Ortmann, Petra Grewer, Veit Luther, Harald Striegler, Dietmar Wennemann, Thomas Schuler, Thoralf Johansson, Helga Goetz, Michael Bug, Guenther Siebenhaar, Gerhard Hahn, Friedrich-Georg Schroeder
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Publication number: 20150337242Abstract: The present invention provides the use of a composition comprising a polyalkyleneimine and/or salts or derivative thereof and an amphoteric polymer for the prevention of corrosion of non-metallic inorganic items during a washing or rinsing process, in particular during an automatic dishwashing process.Type: ApplicationFiled: July 31, 2015Publication date: November 26, 2015Inventors: Nicole Graf, Karlheinz Ulrich Gerhard Hahn
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Patent number: 9096816Abstract: The present invention provides the use of a composition comprising a polyalkyleneimine and/or salts or derivative thereof and an amphoteric polymer for the prevention of corrosion of non-metallic in organic items during a washing or rinsing process, in particular during an automatic dishwashing process.Type: GrantFiled: May 11, 2012Date of Patent: August 4, 2015Assignee: RECKITT BENCKISER N.V.Inventors: Nicole Graf, Karlheinz Ulrich Gerhard Hahn
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Patent number: 8906267Abstract: The invention relates to substance combinations comprising (1) at least one substituted, preferably polysubstituted, pyrimidine, (2) at least one monoalkylurea, (3) at least one C3 to C5 aminoalkyldiol, and optionally (4) at least one benzotriazole, preferably a benzotriazole which is substituted on the benzene ring. The components may be mixed together or dispersed in water or pre-mixed in a solubiliser that is miscible in any ratio with mineral oils and synthetic oils, such as for example a phenyl alkyl alcohol or an alkylated phenol. Such substance combinations can be used as vapour phase corrosion inhibitors in packagings or during storage in closed spaces for protecting customary utility metals, such as iron, chromium, nickel, tin, zinc, aluminium, copper and alloys thereof, against atmospheric corrosion.Type: GrantFiled: January 28, 2011Date of Patent: December 9, 2014Assignee: Excor Korrosionsforschung GmbHInventors: Georg Reinhard, Peter Neitzel, Gerhard Hahn
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Publication number: 20140135247Abstract: The present invention provides the use of a composition comprising a polyalkyleneimine and/or salts or derivative thereof and an amphoteric polymer for the prevention of corrosion of non-metallic in organic items during a washing or rinsing process, in particular during an automatic dishwashing process.Type: ApplicationFiled: May 11, 2012Publication date: May 15, 2014Applicant: Reckitt Benckiser N.V.Inventors: Nicole Graf, Karlheinz Ulrich Gerhard Hahn
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Publication number: 20130316142Abstract: In order to obtain glass or glass ceramic materials having increased strength, a method is provided for producing glass or glass ceramic articles, which comprises: producing an initial glass body, mounting the initial glass body on a gas cushion between a levitation support and the initial glass body, and at least partially ceramizing the initial glass body on the levitation support. The levitation support comprises at least one continuous surface region having at least one gas feed region where levitation gas for the gas cushion is fed out from the levitation support, and at least one gas discharge region where gas from the gas cushion is at least partially discharged into the levitation support.Type: ApplicationFiled: July 25, 2013Publication date: November 28, 2013Applicant: Schott AGInventors: Sybill Nuettgens, Wolfgang Schmidbauer, Roland Dudek, Friedrich Georg Schroeder, Gerhard Hahn, Markus Borrmann, Helga Goetz
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Patent number: 8536107Abstract: Article for use in a dishwashing machine, which comprises a water-soluble glass or ceramic composition effective to reduce corrosion of glassware and at least one surfactant containing composition, wherein the amount of the glass or ceramic composition is within the range of 5 to 95 wt. % and the amount of the surfactant is in the range of 5 to 95 wt. %, both percentages based on the weight of the article.Type: GrantFiled: October 22, 2010Date of Patent: September 17, 2013Assignee: Reckitt Benckiser N.V.Inventor: Karlheinz Ulrich Gerhard Hahn
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Publication number: 20130224493Abstract: A lithium-containing, transparent glass-ceramic material is provided. The material has low thermal expansion and has an amorphous, lithium-depleted, vitreous surface zone. The zone is at least 50 nm thick on all sides and encloses a crystalline interior, which has high transmission. The material includes a transition region connecting the zone and the interior.Type: ApplicationFiled: July 7, 2011Publication date: August 29, 2013Applicant: SCHOTT AGInventors: Falk Gabel, Otmar Becker, Michael Glasenapp, Jan-Peter Ortmann, Petra Grewer, Veit Luther, Harald Striegler, Dietmar Wennemann, Thomas Schuler, Thoralf Johansson, Helga Goetz, Michael Bug, Guenther Benhaar, Gerhard Hahn, Friedrich-Georg Schroeder
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Patent number: 8516851Abstract: In order to obtain glass or glass ceramic materials having increased strength, the invention provides a method for producing glass or glass ceramic articles, which comprises the steps: producing an initial glass body (11), mounting the initial glass body (11) on a gas cushion (13) between a levitation support (1) and the initial glass body (11), and at least partially ceramizing the initial glass body (11) on the levitation support (1). The levitation support comprises at least one continuous surface region (3) having at least one gas feed region (151, 152, 153) where levitation gas for the gas cushion (13) is fed out from the levitation support, and at least one gas discharge region (171 172, 173) where gas from the gas cushion (13) is at least partially discharged into the levitation support.Type: GrantFiled: December 9, 2005Date of Patent: August 27, 2013Assignee: Schott AGInventors: Sybill Nuettgens, Wolfgang Schmidbauer, Roland Dudek, Friedrich Georg Schroeder, Gerhard Hahn, Markus Borrmann, Helga Goetz
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Patent number: 8297077Abstract: In order to provide a particularly homogeneous pressure and temperature profile in a gas cushion for the levitating support of glass or glass ceramic, the invention provides a device (19) for transporting or supporting glass ceramic or glass, which comprises at least one diaphragm (1, 2) that has at least one continuous bearing surface (3) and at least one gas feed chamber (51-55) and at least one gas discharge chamber (71-75), the gas feed chamber (51-55) and the gas discharge chamber (71-75) having a gas-permeable connection to the bearing surface (3).Type: GrantFiled: December 9, 2005Date of Patent: October 30, 2012Assignee: Schott AGInventors: Sybill Nüttgens, Ulrich Lange, Michael Clauss, Andreas Langsdorf, Gerhard Hahn
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Patent number: 8216990Abstract: The present invention provides a composition. The composition comprises zinc and bismuth. The composition is for use in the protection of glassware in an automatic dishwashing process from detrimental effects caused by exposure to aluminum.Type: GrantFiled: January 24, 2011Date of Patent: July 10, 2012Assignee: Reckitt Benckiser N.V.Inventors: Karlheinz Ulrich Gerhard Hahn, Karin Werner