Patents by Inventor Johannes Albertus Maria Meijer
Johannes Albertus Maria Meijer 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: 9988574Abstract: Process and station for stabilizing an aqueous solution of an iron salt of an organic acid with a ferric component and a ferrous component of less solubility than the ferric component, such as the aqueous solution based on the Fe3+ salt of meso-tartaric acid. To stabilize the content of the dissolved ferric salt, the solution is at least partly subjected to electrolytic oxidation.Type: GrantFiled: March 27, 2013Date of Patent: June 5, 2018Assignee: AKZO NOBEL CHEMICALS INTERNATIONAL B.V.Inventors: Hans Lammers, Johannes Albertus Maria Meijer
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Patent number: 9745203Abstract: The present invention relates to a sodium chloride composition comprising an iron complex of tartaric acid wherein between 55 and 90% by weight of the tartaric acid is meso-tartaric acid. The present invention furthermore relates to a process to prepare such a sodium chloride composition and to the use of such a sodium chloride composition.Type: GrantFiled: October 27, 2014Date of Patent: August 29, 2017Assignee: Akzo Nobel Chemicals International B.V.Inventors: Hendrikus Wilhelmus Bakkenes, Roberto Aloysius Gerardus Maria Bergevoet, Johannes Albertus Maria Meijer, Maria Steensma
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Publication number: 20150114841Abstract: The present invention relates to a sodium chloride composition comprising an iron complex of tartaric acid wherein between 55 and 90% by weight of the tartaric acid is meso-tartaric acid. The present invention furthermore relates to a process to prepare such a sodium chloride composition and to the use of such a sodium chloride composition.Type: ApplicationFiled: October 27, 2014Publication date: April 30, 2015Inventors: Hendrikus Wilhelmus BAKKENES, Roberto Aloysius Gerardus Maria BERGEVOET, Johannes Albertus Maria MEIJER, Maria STEENSMA
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Publication number: 20150075999Abstract: Process and station for stabilizing an aqueous solution of an iron salt of an organic acid with a ferric component and a ferrous component of less solubility than the ferric component, such as the aqueous solution based on the Fe3+ salt of meso-tartaric acid. To stabilize the content of the dissolved ferric salt, the solution is at least partly subjected to electrolytic oxidation.Type: ApplicationFiled: March 27, 2013Publication date: March 19, 2015Inventors: Hans Lammers, Johannes Albertus Maria Meijer
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Patent number: 8911796Abstract: The present invention relates to a sodium chloride composition comprising an iron complex of tartaric acid wherein between 55 and 90% by weight of the tartaric acid is meso-tartaric acid. The present invention furthermore relates to a process to prepare such a sodium chloride composition and to the use of such a sodium chloride composition.Type: GrantFiled: May 27, 2010Date of Patent: December 16, 2014Assignee: Akzo Nobel Chemicals International B.V.Inventors: Hendrikus Wilhelmus Bakkenes, Roberto Aloysius Gerardus Maria Bergevoet, Johannes Albertus Maria Meijer, Maria Steensma
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Patent number: 8888867Abstract: The present invention pertains to a process for producing sodium chloride comprising the steps of: (i) preparing a brine having a sodium chloride concentration which is higher than the sodium chloride concentration of the eutectic point but lower than the sodium chloride concentration of a saturated brine by dissolving a sodium chloride source in water; (ii) cooling the resulting brine by indirect cooling in a self-cleaning fluidized bed heat exchanger/crystallizer to a temperature lower than 0° C. but higher than the eutectic temperature of the resulting brine, thereby forming a slurry comprising sodium chloride dihydrate and a mother liquor; (iii) feeding the sodium chloride dihydrate to a recrystallizer to form sodium chloride and a mother liquor, and (iv) recycling at least part of the mother liquor obtained in step (ii) and/or step (iii) to step (i).Type: GrantFiled: October 29, 2009Date of Patent: November 18, 2014Assignee: Akzo Nobel N.V.Inventors: Hendrikus Wilhelmus Bakkenes, Johannes Albertus Maria Meijer, Allert Schokker, Maria Steensma
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Patent number: 8771380Abstract: The present invention pertains to a process for producing sodium chloride comprising the steps of (i) preparing a brine comprising at least 150 g/l of sodium chloride by dissolving a sodium chloride source in water, (ii) subjecting the resulting brine to a eutectic freeze crystallization step by indirect cooling of said brine, resulting in the formation of ice, sodium chloride dihydrate, and a mother liquor, (iii) separating the sodium chloride dihydrate formed in step (ii) from the ice and optionally mother liquor at the eutectic temperature, such that a sodium chloride dihydrate-rich stream is formed, and (iv) feeding said sodium chloride dihydrate-rich stream to a recrystallizer to form sodium chloride and a mother liquor.Type: GrantFiled: May 22, 2009Date of Patent: July 8, 2014Assignee: Akzo Nobel N.V.Inventors: Hendrikus Wilhelmus Bakkenes, Johannes Albertus Maria Meijer, Allert Schokker
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Patent number: 8759574Abstract: The present invention relates to a process for the preparation of a composition comprising tartaric acid wherein between 55 and 90% by weight of the tartaric acid is meso-tartaric acid, comprising the steps of (i) preparing an aqueous mixture comprising between 35 and 65% by weight of a di-alkali metal salt of L-tartaric acid, a di-alkali metal salt of D-tartaric acid, a mixture of di-alkali metal salts of L-tartaric acid, D-tartaric acid, and optionally meso-tartaric acid, and between 2 and 15% by weight of an alkali metal or alkaline metal hydroxide, and (ii) stirring and heating the aqueous mixture to a temperature of between 100° C. and its boiling point until between 55 and 90% by weight of tartaric acid has been converted to meso-tartaric acid.Type: GrantFiled: May 27, 2010Date of Patent: June 24, 2014Assignee: Akzo Nobel Chemicals International B.V.Inventors: Hendrikus Wilhelmus Bakkenes, Roberto Aloysius Gerardus Maria Bergevoet, Johannes Albertus Maria Meijer, Maria Steensma
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Publication number: 20140072718Abstract: The present invention relates to a potassium chloride composition comprising an iron complex of tartaric acid, characterized in that at least 5% by weight of the tartaric acid is mesotartaric acid and that a 10% by weight aqueous solution of said potassium chloride composition has a pH value of between 6 and 11. The present invention furthermore relates to a process to prepare such a potassium chloride composition and to the use of such a potassium chloride composition.Type: ApplicationFiled: September 6, 2013Publication date: March 13, 2014Applicant: AKZO NOBEL CHEMICALS INTERNATIONAL B.V.Inventors: Shanfeng JIANG, Hendrikus Wilhelmus Bakkenes, Roberto Aloysius Gerardus Maria Bergevoet, Johannes Albertus Maria Meijer, Maria Steensma
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Publication number: 20120244231Abstract: The present invention relates to a potassium chloride composition comprising an iron complex of tartaric acid, characterized in that at least 5% by weight of the tartaric acid is mesotartaric acid and that a 10% by weight aqueous solution of said potassium chloride composition has a pH value of between 6 and 11. The present invention furthermore relates to a process to prepare such a potassium chloride composition and to the use of such a potassium chloride composition.Type: ApplicationFiled: November 29, 2010Publication date: September 27, 2012Inventors: Shanfeng Jiang, Hendrikus Wilhelmus Bakkenes, Roberto Aloysius Geradrdus Maria Bergevoet, Johannes Albertus Maria Meijer, Maria Steensma
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Publication number: 20120129952Abstract: The present invention relates to a sodium chloride composition comprising an iron complex of tartaric acid wherein between 55 and 90% by weight of the tartaric acid is meso-tartaric acid. The present invention furthermore relates to a process to prepare such a sodium chloride composition and to the use of such a sodium chloride composition.Type: ApplicationFiled: May 27, 2010Publication date: May 24, 2012Applicant: AKZO NOBEL CHEMICALS INTERNATIONAL B.V.Inventors: Hendrikus Wilhelmus Bakkenes, Roberto Aloysius Gerardus Maria Bergevoet, Johannes Albertus Maria Meijer, Maria Steensma
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Publication number: 20120130124Abstract: The present invention relates to a process for the preparation of a composition comprising tartaric acid wherein between 55 and 90% by weight of the tartaric acid is meso-tartaric acid, comprising the steps of (i) preparing an aqueous mixture comprising between 35 and 65% by weight of a di-alkali metal salt of L-tartaric acid, a di-alkali metal salt of D-tartaric acid, a mixture of di-alkali metal salts of L-tartaric acid, D-tartaric acid, and optionally meso-tartaric acid, and between 2 and 15% by weight of an alkali metal or alkaline metal hydroxide, and (ii) stirring and heating the aqueous mixture to a temperature of between 100° C. and its boiling point until between 55 and 90% by weight of tartaric acid has been converted to meso-tartaric acid.Type: ApplicationFiled: May 27, 2010Publication date: May 24, 2012Applicant: AKZO NOBEL CHEMICALS INTERNATIONAL B.V.Inventors: Hendrikus Wilhelmus Bakkenes, Roberto Aloysius Gerardus Maria Bergevoet, Johannes Albertus Maria Meijer, Maria Steensma
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Publication number: 20110129409Abstract: The present invention pertains to a process for producing sodium chloride comprising the steps of (i) preparing a brine comprising at least 150 g/l of sodium chloride by dissolving a sodium chloride source in water, (ii) subjecting the resulting brine to a eutectic freeze crystallization step by indirect cooling of said brine, resulting in the formation of ice, sodium chloride dihydrate, and a mother liquor, (iii) separating the sodium chloride dihydrate formed in step (ii) from the ice and optionally mother liquor at the eutectic temperature, such that a sodium chloride dihydrate-rich stream is formed, and (iv) feeding said sodium chloride dihydrate-rich stream to a recrystallizer to form sodium chloride and a mother liquor.Type: ApplicationFiled: May 22, 2009Publication date: June 2, 2011Applicant: Akzo Nobel N.V.Inventors: Hendrikus Wilhelmus Bakkenes, Johannes Albertus Maria Meijer, Allert Schokker
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Patent number: 6334989Abstract: A process is presented in which anhydrous soda is crystallized and worked up to produce anhydrous soda crystals with a bulk density from 1300 to 1600 kg/m3. The process is characterized in that a solvent is used that allows the crystals to be formed and handled at atmospheric pressure in the presence of water without the monohydrate of soda being formed.Type: GrantFiled: December 22, 1998Date of Patent: January 1, 2002Assignee: Technische Universiteit DelftInventors: Johannes Albertus Maria Meijer, Robert Michael Geertman, Harald Oosterhof, Geert-Jan Witkamp, Gerda Maria Van Rosmalen