Patents by Inventor Taisto Tienvieri
Taisto Tienvieri 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: 10808356Abstract: In a method for producing nanofibrillar cellulose, cellulose based fiber material in dispersion is processed for separating fibrils. The method includes a first step where the fiber material is supplied to a disperser, where it flows through several counter-rotating rotors in such a way that the material is repeatedly subjected to shear and impact forces by the effect of the different counter-rotating rotors, and a second step, where the fiber material obtained from the first step is supplied to a homogenizer, where it is subjected to homogenization by the effect of pressure.Type: GrantFiled: May 13, 2014Date of Patent: October 20, 2020Assignee: UPM-KYMMENE CORPORATIONInventors: Markus Nuopponen, Juha Tamper, Taisto Tienvieri
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Patent number: 10604589Abstract: Cellulose is oxidized catalytically using a heterocyclic nitroxyl radical as catalyst, main oxidant acting as oxygen source, and an activator of the heterocyclic nitroxyl radical. The oxidation is performed in a reaction medium which is at medium consistency of cellulosic pulp, which is above 6%, more preferably equal to or higher than 8%, and most preferably in the range of 8-12%. The reaction medium is mixed in a reactor through circulation of the reaction medium back to the reactor.Type: GrantFiled: December 13, 2013Date of Patent: March 31, 2020Assignee: UPM-KYMMENE CORPORATIONInventors: Taisto Tienvieri, Isko Kajanto, Tero Ojala, Sami Saarela, Markus Nuopponen, Timo Paakkonen, Tapani Vuorinen
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Patent number: 10214855Abstract: Method for making modified cellulose products comprises —processing cellulose pulp to modified cellulose pulp at a manufacturing location to increase the susceptibility of fibers to disintegration, —setting the modified cellulose pulp to a suitable dry matter content, and —transporting the modified cellulose pulp at set dry matter content to a location of use, where the modified cellulose pulp is disintegrated to nanofibrillar cellulose.Type: GrantFiled: December 4, 2014Date of Patent: February 26, 2019Assignee: UPM-KYMMENE CORPORATIONInventors: Isko Kajanto, Juha Tamper, Markus Nuopponen, Tarja Sinkko, Taisto Tienvieri
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Patent number: 9976256Abstract: A method for making nanofibrillar cellulose includes mixing anionized or cationized cellulose fibers and cellulose pulp to a mixture including at least 1% and below 90 wt-% cellulose pulp based on dry weight, and subjecting the mixture to a refiner stage where the anionized or cationized cellulose fibers are at least partly reduced to nanofibrillar cellulose and the cellulose pulp acts as auxiliary pulp, and obtaining a mixture of nanofibrillar cellulose and cellulose pulp from the refining stage. The mixture can be used for making paper by adding it to base pulp.Type: GrantFiled: May 15, 2014Date of Patent: May 22, 2018Assignee: UPM-KYMMENE CORPORATIONInventors: Isko Kajanto, Taisto Tienvieri, Juha Tamper
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Publication number: 20160289894Abstract: Method for making modified cellulose products comprises—processing cellulose pulp to modified cellulose pulp at a manufacturing location to increase the susceptibility of fibers to disintegration,—setting the modified cellulose pulp to a suitable dry matter content, and—transporting the modified cellulose pulp at set dry matter content to a location of use, where the modified cellulose pulp is disintegrated to nanofibrillar cellulose.Type: ApplicationFiled: December 4, 2014Publication date: October 6, 2016Applicant: UPM-KYMMENE CORPORATIONInventors: Isko Kajanto, Juha Tamper, Markus Nuopponen, Tarja Sinkko, Taisto Tienvieri
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Publication number: 20160122947Abstract: A method for making nanofibrillar cellulose includes mixing anionized or cationized cellulose fibers and cellulose pulp to a mixture including at least 1% and below 90 wt-% cellulose pulp based on dry weight, and subjecting the mixture to a refiner stage where the anionized or cationized cellulose fibers are at least partly reduced to nanofibrillar cellulose and the cellulose pulp acts as auxiliary pulp, and obtaining a mixture of nanofibrillar cellulose and cellulose pulp from the refining stage. The mixture can be used for making paper by adding it to base pulp.Type: ApplicationFiled: May 15, 2014Publication date: May 5, 2016Applicant: UPM-KYMMENE CORPORATIONInventors: Isko KAJANTO, Taisto TIENVIERI, Juha TAMPER
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Publication number: 20160102433Abstract: In a method for producing nanofibrillar cellulose, cellulose based fiber material in dispersion is processed for separating fibrils. The method includes a first step where the fiber material is supplied to a disperser, where it flows through several counter-rotating rotors in such a way that the material is repeatedly subjected to shear and impact forces by the effect of the different counter-rotating rotors, and a second step, where the fiber material obtained from the first step is supplied to a homogenizer, where it is subjected to homogenization by the effect of pressure.Type: ApplicationFiled: May 13, 2014Publication date: April 14, 2016Inventors: Markus NUOPPONEN, Juha TAMPER, Taisto TIENVIERI
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Publication number: 20150322171Abstract: Cellulose is oxidized catalytically using a heterocyclic nitroxyl radical as catalyst, main oxidant acting as oxygen source, and an activator of the heterocyclic nitroxyl radical. The oxidation is performed in a reaction medium which is at medium consistency of cellulosic pulp, which is above 6%, more preferably equal to or higher than 8%, and most preferably in the range of 8-12%. The reaction medium is mixed in a reactor through circulation of the reaction medium back to the reactor.Type: ApplicationFiled: December 13, 2013Publication date: November 12, 2015Inventors: Taisto Tienvieri, Isko Kajanto, Tero Ojala, Sami Saarela, Markus Nuopponen, Timo Paakkonen, Tapani Vuorinen
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Publication number: 20150308429Abstract: In a method for transporting nanofibrillar cellulose in the form of viscous liquid dispersion, the nanofibrillar cellulose is unloaded from a container (3) through a discharge point (3b) which is the lowermost point with respect to the volume of nanofibrillar cellulose in the container at least at the time of unloading. The nanofibrillar cellulose is unloaded and transported to a target location along a pipe (2) using a progressive cavity pump (P2) operating on a positive displacement principle with the suction side of the pump at a distance from the discharge point (3b).Type: ApplicationFiled: December 4, 2013Publication date: October 29, 2015Inventors: Juha Tamper, Isko Kajanto, Maria Alajaaski, Taisto Tienvieri, Markus Nuopponen
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Publication number: 20110036523Abstract: A method for manufacturing mechanical pulp. Raw material of the mechanical pulp is introduced. The raw material is refined in a first refining stage to form the mechanical pulp. The pH of the mechanical pulp is adjusted to between 9 and 11 in a process step in which a first process delay is arranged. The first process delay is at least 0.5 hours. The mechanical pulp is sorted into a first accepted stock and a first rejected stock. The first rejected stock is ozonated. The pH of the first rejected stock is at the start of the ozonation process is between 9 and 11. The ozonated first rejected stock is refined in a second refining stage so that at least a part of the ozonated first rejected stock will belong to a second accepted stock. The first accepted stock and the second accepted stock are combined. The mechanical pulp may be used.Type: ApplicationFiled: December 27, 2007Publication date: February 17, 2011Applicant: UPM-Kymmene CorporationInventors: Esko Härkönen, Taisto Tienvieri, Jouko H. Lehto, Markku Gummerus, Folke Örså, Liisa Pirinen, Mia Piirainen, Jean-Cristophe Hostachy, Serge Kocimski, Ernst-Martin Billing
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Patent number: 6878236Abstract: The object of the present invention is a method for making mechanical pulp, such as thermomechanical or chemi-thermomechanical stock. The mechanical pulp is used as a raw material for printing paper, and its freeness value is 30-70 ml CSF. The stock refined by the method is screened in several stages to form accept and reject stock portions. The wood raw material is refined at the first stage of refining at a superatmospheric pressure of over 400 kPa to form a stock that has a freeness value of 250-700 ml CSF.Type: GrantFiled: June 7, 2002Date of Patent: April 12, 2005Assignee: Upm-Kymmene CorporationInventors: Taisto Tienvieri, Markku Gummerus
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Patent number: 6818099Abstract: The object of the present invention is a method for making mechanical pulp, such as thermomechanical or chemi-thermomechanical stock. The mechanical pulp is utilised as a raw material for printing paper, and its freeness value is 30—70 ml CSF. According to the method, the refined stock is screened in several stages into accept and reject stock portions. The stock is screened at a consistency of not less than 10%.Type: GrantFiled: June 7, 2002Date of Patent: November 16, 2004Assignee: UPM-Kymmene CorporationInventors: Taisto Tienvieri, Markku Gummerus
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Publication number: 20030102094Abstract: Bleaching device for pulp includes a container to which a supply of pulp and bleaching chemicals containing peroxide as well as discharge of bleached pulp are connected. The device comprises an oxygen measuring device a temperature measuring device and/or a carbon monoxide measuring device, which are arranged to measure oxygen concentration, temperature and/or carbon monoxide concentration, respectively, from the contents of the container such as from the gas volume of the same, or from a substance flow coming from the container, such as gas flow. The measuring device is connected to a data processing unit which is coupled to a controller for automatic control of the process. The process is especially a high consistency pulp bleaching of mechanical pulp, in which the consistency of pulp in the reaction area is at least 25%, advantageously at least 30%.Type: ApplicationFiled: October 21, 2002Publication date: June 5, 2003Applicant: UPM-Kymmene CorporationInventors: Tapio Tirri, Olli Dahl, Taisto Tienvieri, Jouko H. Lehto
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Publication number: 20030015305Abstract: The object of the present invention is a method for making mechanical pulp, such as thermomechanical or chemi-thermomechanical stock. The mechanical pulp is used as a raw material for printing paper, and its freeness value is 30-70 ml CSF. The stock refined by the method is screened in several stages to form accept and reject stock portions. The wood raw material is refined at the first stage of refining at a superatmospheric pressure of over 400 kPa to form a stock that has a freeness value of 250-700 ml CSF.Type: ApplicationFiled: June 7, 2002Publication date: January 23, 2003Applicant: UPM-Kymmene CorporationInventors: Taisto Tienvieri, Markku Gummerus
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Publication number: 20030006016Abstract: The object of the present invention is a method for making mechanical pulp, such as thermomechanical or chemi-thermomechanical stock. The mechanical pulp is utilised as a raw material for printing paper, and its freeness value is 30-70 ml CSF. According to the method, the refined stock is screened in several stages into accept and reject stock portions. The stock is screened at a consistency of not less than 10%.Type: ApplicationFiled: June 7, 2002Publication date: January 9, 2003Applicant: UPM-Kymmene CorporationInventors: Taisto Tienvieri, Markku Gummerus