Patents by Inventor Hannu Koivikko
Hannu Koivikko 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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Publication number: 20070112187Abstract: The invention relates to a process of recovering arabinose and optionally other monosaccharides from vegetable fiber rich in heteropolymeric arabinose, such as gum arabic. Said other monosaccharides are typically selected from galactose and rhamnose. The process of the invention comprises controlled hydrolysis of the arabinose-rich vegetable fiber and fractionation of the hydrolysis product to obtain a fraction enriched in arabinose and optionally other product fractions followed by crystallization of arabinose. The invention also relates to a novel method of crystallizing arabinose from biomass-derived material. Furthermore, the invention relates to novel crystalline L-arabinose.Type: ApplicationFiled: October 29, 2004Publication date: May 17, 2007Inventors: Heikki Heikkila, Hannu Koivikko, Juha Nurmi, Jari Mattila, Pia Saari, Nina Nurmi, Paivi Sarmala, Mirja Lindroos, Jari Lewandowski
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Patent number: 7008485Abstract: The invention relates to a process of separating compounds with a small molar mass from compounds having a molar mass less than 1.9 times that of the compounds with a small molar mass using nanofiltration. The compounds with a small molar mass have a typical molar mass less than 250 g/mol. In one embodiment of the invention, pentose sugars are separated from hexose sugars. The invention can be applied to the recovery of xylose from spent liquors and to the recovery of betaine from sugar beet pulp extracts, for example.Type: GrantFiled: December 28, 2001Date of Patent: March 7, 2006Assignee: Danisco Sweeteners OyInventors: Heikki Heikkila, Mika Manttari, Marianne Nystrom, Mirja Lindroos, Hannu Paananen, Outi Puuppo, Hannu Koivikko
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Patent number: 7009076Abstract: The invention relates to a separation process of fractionating a solution comprising betaine and sucrose by subjecting said solution to chromatographic fractionation and nanofiltration and recovering a fraction enriched in betaine and optionally a fraction enriched in sucrose. The solution to be fractionated in accordance with the present invention is typically a sugar beet-derived solution, for instance a molasses solution.Type: GrantFiled: February 25, 2003Date of Patent: March 7, 2006Assignee: Finnfeeds Finland OyInventors: Hannu Paananen, Heikki Heikkila, Outi Puuppo, Hannu Koivikko, Kaj-Erik Monten, Mika Manttäri, Marianne Nyström
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Publication number: 20050256307Abstract: The present invention pertains to a chromatographic process for separating saccharide monomers from dimers and/or saccharide trimers from dimers. The separation is effected with a cation exchange resin. If saccharide monomers are separated from saccharide dimers the cation exchange resin has a high degree of crosslinking. If the saccharide dimers are separated from saccharide trimers the cation exchange resins has a low degree of crosslinking.Type: ApplicationFiled: February 4, 2003Publication date: November 17, 2005Inventors: Vili Ravanko, Nina Mayra, Heikki Heikkila, Hannu Koivikko, Pekka Kekki, Hannu Kalliomaki, Matti Tylli, Johanna Nygren
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Publication number: 20050211239Abstract: The invention relates to removing crystallization inhibitors from a solution comprising one or more reducing sugars by nanofiltration, hydrolysis and/or chromatography. The reducing sugars are typically selected from fructose and xylose.Type: ApplicationFiled: June 26, 2003Publication date: September 29, 2005Inventors: Hannu Koivikko, Minna Kaarto, Heikki Heikkila, Mirja Lindroos, Juha Nurmi
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Patent number: 6894199Abstract: The present invention relates to the production of xylitol. In particular, processes utilising L-xylose as an intermediate for xylitol production are described. The present invention also relates to process for the preparation or L-xylose, as an intermediate, by-product or end-product to be used per se.Type: GrantFiled: April 29, 2002Date of Patent: May 17, 2005Assignee: Danisco Sweeteners OyInventors: Heikki Heikkilä , Heikki Ojamo, Matti Tylli, Vili Ravanko, Juha Nurmi, Piia Haimi, Raimo Alen, Hannu Koivikko
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Publication number: 20050096464Abstract: The invention relates to a process of recovering arabinose and optionally other monosaccharides from vegetable fiber rich in heteropolymeric arabinose, such as gum arabic. Said other monosaccharides are typically selected from galactose and rhamnose. The process of the invention comprises controlled hydrolysis of the arabinose-rich vegetable fiber and fractionation of the hydrolysis product to obtain a fraction enriched in arabinose and optionally other product fractions followed by crystallization of arabinose. The invention also relates to a novel method of crystallizing arabinose from biomass-derived material. Furthermore, the invention relates to novel crystalline L-arabinose.Type: ApplicationFiled: October 30, 2003Publication date: May 5, 2005Inventors: Heikki Heikkila, Hannu Koivikko, Juha Nurmi, Jari Mattila, Pia Saari, Nina Nurmi, Paivi Sarmala, Mirja Lindroos, Jari Lewandowski
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Publication number: 20040060868Abstract: The invention relates to a process of separating compounds with a small molar mass from compounds having a molar mass less than 1.9 times that of the compounds with a small molar mass using nanofiltration. The compounds with a small molar mass have a typical molar mass less than 250 g/mol. In one embodiment of the invention, pentose sugars are separated from hexose sugars. The invention can be applied to the recovery of xylose from spent liquors and to the recovery of betaine from sugar beet pulp extracts, for example.Type: ApplicationFiled: June 25, 2003Publication date: April 1, 2004Inventors: Heikki Heikkila, Mika Manttari, Marianne Nystrom, Mirja Lindroos, Hannu Paananen, Outi Puuppo, Hannu Koivikko
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Publication number: 20040006222Abstract: The invention relates to a separation process of fractionating a solution comprising betaine and sucrose by subjecting said solution to chromatographic fractionation and nanofiltration and recovering a fraction enriched in betaine and optionally a fraction enriched in sucrose. The solution to be fractionated in accordance with the present invention is typically a sugar beet-derived solution, for instance a molasses solution.Type: ApplicationFiled: February 25, 2003Publication date: January 8, 2004Applicant: Finnfeeds Finland OyInventors: Hannu Paananen, Heikki Heikkila, Outi Puuppo, Hannu Koivikko, Kaj-Erik Monten, Mika Manttari, Marianne Nystrom
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Patent number: 6663717Abstract: The invention relates to a method of simultaneous purification and separation of pectin and pectic sugars/oligomers from sugar beet pulp using a multi-step process in an aqueous solution. The method comprises hydrolysis of the sugar beet pulp, solids separation from the sugar beet pulp hydrolysate as well as fractionation and desalting of the aqueous solution of the sugar beet pulp hydrolysate thus obtained into a desalted solution enriched in pectin and a desalted solution enriched in pectic sugars/oligomers. The process may also comprise optional further steps, such as clarification, adsorption, concentration and further chromatographic treatment.Type: GrantFiled: March 6, 2002Date of Patent: December 16, 2003Assignee: Danisco Sugar OyInventors: Tapio Juhani Antila, Timo Väkeväinen, Christina Lindqvist, Hannu Koivikko, Matti Tylli, Juho Jumppanen, Pertti Walliander, Nina Mäyrä
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Patent number: 6660099Abstract: The invention relates to chromatographic fractionation of pectin-containing vegetable material, such as sugar beet pulp. In the method of the invention, a pectin-containing hydrolysate is chromatographically separated into a pectin fraction, a salt fraction and a sugar fraction. The method is carried out by using a cation exchange resin, which is preferably in the form of a multivalent metal.Type: GrantFiled: March 6, 2002Date of Patent: December 9, 2003Assignee: Danisco Sugar OyInventors: Tapio Juhani Antila, Timo Väkeväinen, Christina Lindqvist, Hannu Koivikko, Matti Tylli, Juho Jumppanen
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Patent number: 6602691Abstract: The invention relates to the production of mannitol by bioconversion with the aid of immobilized micro-organisms as well as to the use of the mannitol and by-products formed in the conversion process. In said process a solution containing a substrate convertible into mannitol is fed into contact with solid carrier particles containing viable mannitol-forming microorganism cells immobilized in and/or on said particles. The solution is reconditioned between successive conversion steps in order to provide conversion of a major portion of said substrate into mannitol.Type: GrantFiled: January 9, 2001Date of Patent: August 5, 2003Assignee: Xyrofin OyInventors: Heikki Ojamo, Hannu Koivikko, Heikki Heikkilä
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Publication number: 20030097029Abstract: The present invention relates to the production of xylitol. In particular, processes utilising L-xylose as an intermediate for xylitol production are described. The present invention also relates to process for the preparation or L-xylose, as an intermediate, by-product or end-product to be used per se.Type: ApplicationFiled: April 29, 2002Publication date: May 22, 2003Inventors: Heikki Heikkila, Heikki Ojamo, Matti Tylli, Vili Ravanko, Juha Nurmi, Piia Haimi, Raimo Alen, Hannu Koivikko
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Publication number: 20020189606Abstract: The invention relates to a method of simultaneous purification and separation of pectin and pectic sugars/oligomers from sugar beet pulp using a multi-step process in an aqueous solution. The method comprises hydrolysis of the sugar beet pulp, solids separation from the sugar beet pulp hydrolysate as well as fractionation and desalting of the aqueous solution of the sugar beet pulp hydrolysate thus obtained into a desalted solution enriched in pectin and a desalted solution enriched in pectic sugars/oligomers. The process may also comprise optional further steps, such as clarification, adsorption, concentration and further chromatographic treatment.Type: ApplicationFiled: March 6, 2002Publication date: December 19, 2002Applicant: Danisco Sugar OyInventors: Tapio Juhani Antila, Timo Vakevainen, Christina Lindqvist, Hannu Koivikko, Matti Tylli, Juho Jumppanen, Pertti Walliander, Nina Mayra
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Publication number: 20020150652Abstract: The invention relates to chromatographic fractionation of pectin-containing vegetable material, such as sugar beet pulp. In the method of the invention, a pectin-containing hydrolysate is chromatographically separated into a pectin fraction, a salt fraction and a sugar fraction. The method is carried out by using a cation exchange resin, which is preferably in the form of a multivalent metal.Type: ApplicationFiled: March 6, 2002Publication date: October 17, 2002Applicant: Danisco Sugar OyInventors: Tapio Juhani Antila, Timo Vakevainen, Christina Lindqvist, Hannu Koivikko, Matti Tylli, Juho Jumppanen
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Patent number: 5932455Abstract: The invention relates to a method for preparing pure lactic acid or a salt thereof by fermentation. The preparation process comprises bioreactor refreshing cycle and a lactic acid production cycle, wherein during the production cycle a solution comprising substantially pure feedstock is recycled through a bioreactor containing refreshed microorganism cells, the lactic acid produced being neutralized by adding an alkali, and the recycling is discontinued when the alkali consumption is substantially diminished, and during the refreshing cycle the microorganism cells are refreshed by recycling through the bioreactor a carbohydrate solution enriched with nutrients, thus replenishing the capacity of the microorganisms to produce an acid, and recovery of lactate or conversion thereof into lactic acid or other salt.Type: GrantFiled: November 7, 1997Date of Patent: August 3, 1999Assignee: Cultor OyInventors: Tapio Viljava, Hannu Koivikko