Patents by Inventor Matti Lehtinen
Matti Lehtinen 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: 10423610Abstract: The invention relates to a method for exchange of information between a computing unit of a first entity and a computing unit of at least one second entity. A computing unit of at least one second entity is detected and information on a token associated to the second entity from the computing unit is requested and received. On the basis of the received information, the token associated to the at least one second entity, is retrieved and a token associated to the first entity is modified at least partly with information of the received token associated to the at least one second entity. Finally, the modified token is utilized at least in the service the computing unit of the first entity belongs to. The invention relates also to a system and a computing unit implementing the method.Type: GrantFiled: February 24, 2012Date of Patent: September 24, 2019Assignee: TEKNOLOGIAN TUTKIMUSKESKUSInventors: Ville Ollikainen, Juha-Matti Lehtinen, Antti Tammela, Kristiina Kantola, Raimo Launonen
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Publication number: 20140059067Abstract: The invention relates to a method for exchange of information between a computing unit of a first entity and a computing unit of at least one second entity. A computing unit of at least one second entity is detected and information on a token associated to the second entity from the computing unit is requested and received. On the basis of the received information, the token associated to the at least one second entity, is retrieved and a token associated to the first entity is modified at least partly with information of the received token associated to the at least one second entity. Finally, the modified token is utilized at least in the service the computing unit of the first entity belongs to. The invention relates also to a system and a computing unit implementing the method.Type: ApplicationFiled: February 24, 2012Publication date: February 27, 2014Applicant: TEKNOLOGIAN TUTKIMUSKESKUS VTTInventors: Ville Ollikainen, Juha-Matti Lehtinen, Antti Tammela, Kristiina Kantola, Raimo Launonen
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Patent number: 8124820Abstract: The present invention relates to a process for producing polyolefins wherein a feedstock comprising n-olefin or a mixture of n-olefins is dimerized in the presence of a solid acidic catalyst by passing the feedstock to a catalytic distillation apparatus comprising either a) a combination of a distillation column and a reactor comprising at least one catalyst bed, or b) a distillation column connected to one or more side reactors comprising at least one catalyst layer, recovering the unreacted n-olefin from the distillation column or the combination of the distillation column and the reactor at the upper part thereof as a side-stream to be combined with the feedstock, and the reaction product from the dimerization is hydrogenated.Type: GrantFiled: June 13, 2007Date of Patent: February 28, 2012Assignee: Neste Oil OyjInventors: Marja Tiitta, Anna-Mari Illikainen, Kari Kulmala, Vesa-Matti Lehtinen, Fredrik Nissfolk
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Publication number: 20070293712Abstract: The present invention relates to a process for producing polyolefins wherein a feedstock comprising n-olefin or a mixture of n-olefins is dimerized in the presence of a solid acidic catalyst by passing the feedstock to a catalytic distillation apparatus comprising either a) a combination of a distillation column and a reactor comprising at least one catalyst bed, or b) a distillation column connected to one or more side reactors comprising at least one catalyst layer, recovering the unreacted n-olefin from the distillation column or the combination of the distillation column and the reactor at the upper part thereof as a side-stream to be combined with the feedstock, and the reaction product from the dimerization is hydrogenated.Type: ApplicationFiled: June 13, 2007Publication date: December 20, 2007Applicant: Neste Oil OyjInventors: Marja Tiitta, Anna-Mari Illikainen, Kari Kulmala, Vesa-Matti Lehtinen, Fredrik Nissfolk
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Patent number: 7053077Abstract: The invention relates to the use of biogenic estrogen sulfamates for the oral discontinuous application for hormone replacement therapy (HRT). The discontinuous administration takes place in intervals ranging from 2 to 40 days. The invention also provides the additional application of gestagens, preferably continuously in the form of an implant or in the form of an intrauterine releasing system (IUD). Estrone sulfamate, estradiol sulfamate or an N-acyl sulfamate of estrone, estradiol or estriol having up to 7 C-atoms in the acyl chain, or a combination comprised of two or more of said active ingredients are used as biogenic estrogen sulfamates.Type: GrantFiled: May 13, 1999Date of Patent: May 30, 2006Assignee: Schering AGInventors: Walter Elger, Pekka Lähteenmäki, Matti Lehtinen, Gudrun Reddersen, Holger Zimmermann, Michael Oettel, Sigfrid Schwarz
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Patent number: 6887948Abstract: The invention relates to a method for the preparation of a siloxane-based elastomer composition comprising at least one elastomer, said elastomer composition comprising poly(alkylene oxide) groups present in the elastomer as alkoxy-terminated grafts of polysiloxane units and linked to the polysiloxane units by silicon-carbon bonds wherein at least one vinyl functional polymer component is crosslinked in the presence of a peroxide catalyst.Type: GrantFiled: November 18, 2002Date of Patent: May 3, 2005Assignee: Schering OyInventors: Harri Jukarainen, Tommi Markkula, Juha Ala-Sorvari, Pirkko Lehtinen, Jarkko Ruohonen, Matti Lehtinen
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Patent number: 6794464Abstract: A membrane or matrix for controlling the permeation rate of a drug, where the membrane or matrix includes a siloxane-based elastomer composition which contains at least one elastomer and optionally a non-crosslinked polymer. The elastomer composition includes poly(alkylene oxide) groups, and the poly(alkylene oxide) groups are present as blocks in a chain of the elastomer or the polymer, or as blocks and alkoxy-terminated grafts of polysiloxane units, the blocks or blocks and grafts being linked to the polysiloxane units by silicon-carbon bonds, with at least three blocks being present in the elastomer or polymer chain. Methods for the preparation of the elastomer composition are also disclosed.Type: GrantFiled: November 18, 2002Date of Patent: September 21, 2004Assignee: Schering OyInventors: Harri Jukarainen, Tommi Markkula, Juha Ala-Sorvari, Matti Lehtinen, Jarkko Ruohonen
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Publication number: 20030096921Abstract: The invention relates to a method for the preparation of a siloxane-based elastomer composition comprising at least one elastomer, said elastomer composition comprising poly(alkylene oxide) groups present in the elastomer as alkoxy-terminated grafts of polysiloxane units and linked to the polysiloxane units by silicon-carbon bonds wherein at least one vinyl functional polymer component is crosslinked in the presence of a peroxide catalyst.Type: ApplicationFiled: November 18, 2002Publication date: May 22, 2003Inventors: Harri Jukarainen, Tommi Markkula, Juha Ala-Sorvari, Matti Lehtinen, Pirkko Lehtinen, Jarkko Ruohonen
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Publication number: 20030096920Abstract: A membrane or matrix for controlling the permeation rate of a drug, where the membrane or matrix includes a siloxane-based elastomer composition which contains at least one elastomer and optionally a non-crosslinked polymer. The elastomer composition includes poly(alkylene oxide) groups, and the poly(alkylene oxide) groups are present as blocks in a chain of the elastomer or the polymer, or as blocks and alkoxy-terminated grafts of polysiloxane units, the blocks or blocks and grafts being linked to the polysiloxane units by silicon-carbon bonds, with at least three blocks being present in the elastomer or polymer chain. Methods for the preparation of the elastomer composition are also disclosed.Type: ApplicationFiled: November 18, 2002Publication date: May 22, 2003Inventors: Harri Jukarainen, Tommi Markkula, Juha Ala-Sorvari, Matti Lehtinen, Pirkko Lehtinen, Jarkko Ruohonen
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Patent number: 6476079Abstract: A device for the controlled release over a prolonged period of time of a drug having antiprogestinic properties, the device including a core containing the drug, optionally a membrane encasing the core, where at least one of the core and membrane, when present, is made of a siloxane-based elastomer composition including at least one elastomer and optionally a non-crosslinked polymer. The device is characterized in that the elastomer composition includes poly(alkylene oxide) groups and that the poly(alkylene oxide) groups are present in the elastomer or polymer as alkoxy-terminated grafts of polysiloxane units, or as blocks, the grafts or blocks being linked to the polysiloxane units by silicon-carbon bonds, or as a mixture of these forms.Type: GrantFiled: December 23, 1999Date of Patent: November 5, 2002Assignee: Leiras OyInventors: Harri Jukarainen, Tommi Markkula, Juha Ala-sorvari, Matti Lehtinen, Jarkko Ruohonen
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Patent number: 6369281Abstract: The present invention concerns a process for producing 2-butyl-2-ethyl-1,3-propanediol. According to the process, a reaction mixture is formed, containing 2-ethylhexanal and formaldehyde, into which an hydroxide compound is fed, whereby 2-ethylhexanal and formaldehyde are reacted to to produce 2-butyl-2-ethyl-1,3-propanediol. According to the invention, the hydroxide compound is incrementally fed into the reaction mixture. Preferably the hydroxide compound is fed at least at two input rates, in such a way that the heat production of the reaction between 2-ethylhexanal and formaldehyde immediately after each increase of the input rate of the hydroxide compound, is at least almost the same. The invention allows for the production of BEPD in a controlled and safe manner, with excellent yields.Type: GrantFiled: May 30, 2000Date of Patent: April 9, 2002Assignee: Neste OyjInventors: Lars-Peter Lindfors, Kalevi Heinola, Kari Kulmala, Hannele Hakanp{umlaut over (aa)}-Laitinen, Lea Rintala, Lea Parkkinen, Vesa-Matti Lehtinen
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Patent number: 6299894Abstract: The invention relates to a delivery device for the controlled release of the therapeutically active agent gestodene, over a prolonged period of time, at a release rate of 0,1-300 &mgr;g/day, said device comprising a core comprising at least said therapeutically active agent, and a membrane encasing said core wherein said membrane is made of an elastomer. According to the invention, the elastomer is a siloxane-based elastomer comprising 3,3,3-trifluoropropyl groups attached to the Si-atoms of the siloxane units, and the release rate of said therapeutically active agent of said delivery device is regulated by the amount of said 3,3,3-trifluoropropyl groups.Type: GrantFiled: May 10, 2000Date of Patent: October 9, 2001Assignee: Leiras OyInventors: Tommi Markkula, Juha Ala-Sorvari, Harri Jukarainen, Matti Lehtinen, Jarkko Ruohonen
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Patent number: 6300452Abstract: The invention relates to a new polysiloxane-based block copolymer having a formula T(AB)xAT (I) wherein A=—(SiR′R″O)nSiR′R″—, wherein R′ and R″ are the the same or different and represent a lower alkyl group or a phenyl group, wherein said alkyl or phenyl group may be substituted or unsubstituted; B is polyalkylene oxide of formula wherein R is hydrogen, lower alkyl, or phenyl; R1 is hydrogen or lower alkyl; y is 2-6; m is 1-30; n is 1-3000; and x is 0-100.Type: GrantFiled: November 18, 1999Date of Patent: October 9, 2001Assignee: Leiras OyInventors: Harri Jukarainen, Jarkko Ruohonen, Matti Lehtinen, Juha Ala-Sorvari, Jukka Seppälä
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Patent number: 6117442Abstract: The invention relates to a delivery device for the controlled release of a therapeutically active agent, especially an androgen, over a prolonged period of time, said device including a core containing the therapeutically active agent, and a membrane encasing the core wherein the membrane is made of an elastomer. According to the invention, the elastomer is a siloxane-based elastomer which includes 3,3,3-trifluoropropyl groups attached to the Si-atoms of the siloxane units.Type: GrantFiled: November 12, 1998Date of Patent: September 12, 2000Assignee: Leiras OyInventors: Tommi Markkula, Juha Ala-Sorvari, Harri Jukarainen, Matti Lehtinen, Jarkko Ruohonen
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Patent number: 6063395Abstract: The invention relates to a delivery device for the controlled release of a therapeutically active agent, especially a progestin or an estrogen, over a prolonged period of time, said device including a core which contains the therapeutically active agent, and a membrane encasing the core wherein said membrane is made of an elastomer. According to the invention, the elastomer is a siloxane-based elastomer which includes 3,3,3-trifluoropropyl groups attached to the Si-atoms of the siloxane units.Type: GrantFiled: November 12, 1998Date of Patent: May 16, 2000Assignee: Leiras OyInventors: Tommi Markkula, Juba Ala-Sorvari, Harri Jukarainen, Matti Lehtinen, Jarkko Ruohonen
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Patent number: 6056976Abstract: The invention relates to a siloxane-based elastomer intended for controlling the permeation of drugs, wherein the elastomer includes 3,3,3,-trifluoropropyl groups attached to the Si-atoms of the siloxane units.The invention relates also to a method for the preparation of a siloxane-based elastomer including 3,3,3,-trifluoropropyl substituents, where the elastomer is intended for controlling the permeation of drugs.In the method eitheri) a 3,3,3,-trifluoropropyl-substituted vinyl-functional polysiloxane component and a silicon hydride-functional crosslinking agent are crosslinked in the presence of a catalyst, orii) a 3,3,3,-trifluoropropyl-substituted polysiloxane component is crosslinked in the presence of a peroxide catalyst.Type: GrantFiled: November 12, 1998Date of Patent: May 2, 2000Assignee: Leiras OyInventors: Tommi Markkula, Juha Ala-Sorvari, Harri Jukarainen, Matti Lehtinen, Jarkko Rughonen
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Patent number: 5785053Abstract: An inserter for the positioning of an intrauterine device in the uterus, which inserter includes a plunger, a handle attached to the plunger, a string for the removal of the IUD, a locking device to lock the string in such a way that the IUD remains immobile in relation to the plunger, and a protective tube around the plunger. The protective tube is arranged in relation to the plunger in such a way that it can be pushed, at the forward end that goes into the uterus, past the plunger at distance (L) , which corresponds substantially to the length of the IUD assembled for insertion. The stop members ensure that the front edge of the protective tube is stopped in a configuration in which the hemispherical tips of the wings of the transverse member of a T-shaped IUD remain partly uncovered by the protective tube, but the wings nevertheless remain pressed against each other.Type: GrantFiled: June 2, 1997Date of Patent: July 28, 1998Assignee: Leiras OyInventors: John Macandrew, John Conway, Michael Paton, Richard Gardner, Ilkka Rauramo, Matti Lehtinen
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Patent number: 5767334Abstract: A method for removing catalyst from an olefinic oligomerization product includes the steps of oligomerizing one or more olefins in the presence of a BF.sub.3 cocatalyst complex, and distilling the oligomerization product while separating vaporized BF.sub.3 cocatalyst complex, the distillation step including, simultaneously to the separation of BF.sub.3 cocatalyst complex, a separation of vaporized unreacted monomer from a bottom product which becomes substantially free from BF.sub.3 cocatalyst complex.Type: GrantFiled: April 8, 1996Date of Patent: June 16, 1998Assignee: Neste Alfa OyInventors: Fredrik Nissfolk, Raimo Linnaila, Ivo Smeets, Vesa-Matti Lehtinen, Kauno Alastalo, Filip Thierie
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Patent number: 5694947Abstract: Intravaginal delivery system including a flexible support means, and a delivery means carried by the support means and containing an active agent wherein the support means comprises a core member substantially in the form of an open ring, and the delivery means comprises at least one polymer body which encircles the core member in a beltwise manner along a portion of a length of the core member.Type: GrantFiled: April 11, 1996Date of Patent: December 9, 1997Assignee: Leiras OyInventors: Matti Lehtinen, Christine Talling
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Patent number: 5626148Abstract: Device for intrauterine use comprising means (7, 8) for attaching the device to the interior wall of the uterus, as well as a member (1) releasing active agent and connected to the said attachment means. The invention is characterized in that the active agent releasing member (1) is in the form of a closed container enclosing the active agent, the walls of the container being at least partly permeable to the active agent.Type: GrantFiled: February 22, 1994Date of Patent: May 6, 1997Assignee: Leiras OyInventor: Matti Lehtinen