Patents by Inventor Antti Keinanen

Antti Keinanen 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).

  • Patent number: 11666552
    Abstract: The present invention relates to a method for modifying release of a therapeutically active agent from an elastomeric matrix, comprising providing a core comprising an elastomeric matrix and a therapeutically active agent; dipping the core to a coating solution of an elastomer, wherein the elastomer comprises 20-35 wt-% of a filler, calculated from the total amount of filler and elastomer; curing the dipped core to provide a coated core. In this method the dipping is provided as a continuous process by pulling the core through the coating solution, using a pulling speed suitable for providing a coating thickness of ?-IOO the filler is selected from silica, titanium dioxide, barium sulphate, carbon and mixtures thereof; the elastomer comprised in the core and the elastomer comprised in the coating solution are independently selected from poly(dimethyl) siloxanes, polyethylene vinyl acetates (EVAs), polyurethanes (PUs), polyhydroxyethyl methacrylates (PHEMAs) and polymethyl methacrylates (PMMAs).
    Type: Grant
    Filed: September 19, 2018
    Date of Patent: June 6, 2023
    Assignee: Bayer OY
    Inventors: Manja Ahola, Risto Hakala, Piia Hara, Antti Keinänen, Henriikka Korolainen, Jyrki Pihlaja
  • Publication number: 20200276159
    Abstract: The present invention relates to a method for modifying release of a therapeutically active agent from an elastomeric matrix, comprising providing a core comprising an elastomeric matrix and a therapeutically active agent; dipping the core to a coating solution of an elastomer, wherein the elastomer comprises 20-35 wt-% of a filler, calculated from the total amount of filler and elastomer; curing the dipped core to provide a coated core. In this method the dipping is provided as a continuous process by pulling the core through the coating solution, using a pulling speed suitable for providing a coating thickness of ?-IOO the filler is selected from silica, titanium dioxide, barium sulphate, carbon and mixtures thereof; the elastomer comprised in the core and the elastomer comprised in the coating solution are independently selected from poly(dimethyl) siloxanes, polyethylene vinyl acetates (EVAs), polyurethanes (PUs), polyhydroxyethyl methacrylates (PHEMAs) and polymethyl methacrylates (PMMAs).
    Type: Application
    Filed: September 19, 2018
    Publication date: September 3, 2020
    Applicant: Bayer OY
    Inventors: Manja AHOLA, Risto HAKALA, Piia HARA, Antti KEINÄNEN, Henriikka KOROLAINEN, Jyrki PIHLAJA
  • Patent number: 8152793
    Abstract: The membrane shell of an implantable dosage system according to the invention is particularly suitable for subcutaneous applications to release an active agent with steady amounts during a longer period of time. The membrane shell (3) according to the invention comprises a first half (1) and a second half (2), which both halves comprise a continuous closure edge (8, 9), and are adapted to be connected to each other through a closable joint. The closure edges (8, 9) of the halves comprise at least one groove (10) and/or at least one protrusion (11) as continuous or discontinuous, and the membrane shell (3) is adapted to be closed so that at least one protrusion (11) and/or at least one groove (10) of the second half becomes opposed to at least one groove (10) and/or at least one protrusion (11) of the first half through a snap-fit joint.
    Type: Grant
    Filed: April 23, 2008
    Date of Patent: April 10, 2012
    Assignee: Bayer Oy
    Inventors: Antti Keinänen, Jukka Koskinen, Pentti Järvelä
  • Publication number: 20100285097
    Abstract: The present invention is related to an intravaginal delivery system for the controlled release of drospirenone and an estrogen, optionally also comprising one or more therapeutically active or a health-promoting substance capable of giving and/or enhancing protection against bacterial and fungal infections, and/or enhancing protection against sexually transmitted diseases. The delivery system consists of one or more compartments, one of each comprising a core and a membrane encasing the core, said core and membrane essentially consisting of a same or different polymer composition, wherein at least one compartment comprises drospirenone ant at least one compartment which may be the same or different from the one comprising drospirenone, comprises an estrogen or a mixture of drospirenone and an estrogen, and wherein the membrane or the surface of the membrane or at least one of the cores comprises said therapeutically active or a health-promoting substance.
    Type: Application
    Filed: November 19, 2008
    Publication date: November 11, 2010
    Inventors: Christine Talling, Vladimir Hanes, Antti Keinänen, Svante Holmberg, Hannu Nikander
  • Publication number: 20100062034
    Abstract: The membrane shell of an implantable dosage system according to the invention is particularly suitable for subcutaneous applications to release an active agent with steady amounts during a longer period of time. The membrane shell (3) according to the invention comprises a first half (1) and a second half (2), which both halves comprise a continuous closure edge (8, 9), and are adapted to be connected to each other through a closable joint. The closure edges (8, 9) of the halves comprise at least one groove (10) and/or at least one protrusion (11) as continuous or discontinuous, and the membrane shell (3) is adapted to be closed so that at least one protrusion (11) and/or at least one groove (10) of the second half becomes opposed to at least one groove (10) and/or at least one protrusion (11) of the first half through a snap-fit joint.
    Type: Application
    Filed: April 23, 2008
    Publication date: March 11, 2010
    Inventors: Antti Keinänen, Jukka Koskinen, Pentti Järvelä
  • Publication number: 20090142313
    Abstract: The present invention is related to an intravaginal delivery system for the controlled release of drospirenone and an estrogen, optionally also comprising one or more therapeutically active or a health-promoting substance capable of giving and/or enhancing protection against bacterial and fungal infections, and/or enhancing protection against sexually transmitted diseases. The delivery system consists of one or more compartments, one of each comprising a core and a membrane encasing the core, said core and membrane essentially consisting of a same or different polymer composition, wherein at least one compartment comprises drospirenone ant at least one compartment which may be the same or different from the one comprising drospirenone, comprises an estrogen or a mixture of drospirenone and an estrogen, and wherein the membrane or the surface of the membrane or at least one of the cores comprises said therapeutically active or a health-promoting substance.
    Type: Application
    Filed: November 20, 2008
    Publication date: June 4, 2009
    Applicant: Bayer Schering Pharma Oy
    Inventors: Christine Talling, Vladimir Hanes, Antti Keinanen, Svante Holmberg, Hannu Nikander
  • Publication number: 20060136520
    Abstract: A method is disclosed to transfer data from a first terminal to a second terminal. The method includes establishing metadata to specify particulars of the data to be transferred; and selectively transferring data via a link from a memory of the first terminal to a memory of the second terminal in accordance with the metadata. A terminal includes a memory that stores data, a user interface and a controller that is coupled to the memory to selectively transfer data for storage in a memory of another terminal via an interface. The controller includes or implements a data filter coupled to metadata storage, where the metadata may be at least partially established by a user via the user interface to specify particulars of the data to be transferred.
    Type: Application
    Filed: December 17, 2004
    Publication date: June 22, 2006
    Inventors: Mika Leppinen, Antti Keinanen
  • Publication number: 20040247674
    Abstract: A delivery system including at least one core and a membrane. The core and the membrane include an elastomer composition containing, e.g., poly(dimethylsiloxane), a siloxane-based elastomer having 3,3,3-trifluoropropyl groups attached to the Si-atoms of the siloxane units and/or poly(alkylene oxide) groups, present as alkoxy-terminated grafts or blocks linked to the polysiloxane units by silicon-carbon bonds, or as a mixture of these forms. The delivery system is preferably an implant or an interuterine, intracervical or intravaginal system.
    Type: Application
    Filed: March 12, 2004
    Publication date: December 9, 2004
    Inventors: Timo Haapakumpu, Juha Ala-Sorvari, Marko Aaltonen, Antti Keinanen, Manja Ahola