Patents by Inventor Matti Siika-Aho

Matti Siika-Aho 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).

  • Publication number: 20070148732
    Abstract: The present invention relates to novel cellulase enzymes, especially novel endoglucanases including endoglucanase fusion proteins, preparations and compositions containing these endoglucanase enzymes and fusion proteins, expression vectors, host cells and methods for their preparation and uses of the cellulases, preparations and compositions in the textile, detergent and pulp and paper industries.
    Type: Application
    Filed: December 22, 2005
    Publication date: June 28, 2007
    Applicant: AB Enzymes GmbH
    Inventors: Leena Valtakari, Marika Alapuranen, Satu Hooman, Matti Siika-Aho, Jarno Kallio, Liisa Viikari, Pentti Ojapalo, Jari Vehmaanpera
  • Patent number: 6830655
    Abstract: The present invention concerns a method for enzymatic treatment of lignocellulosic materials which contain xylan-polymers, such as cellulose kraft pulps. According to a method of the present kind, at least a part of the hexenuronic acid groups present in the material is selectively removed in order to remove metal ions from the pulp, to change the surface charge thereof, to improve the brightness stability of the pulp and to render the material more suitable for enzymatic treatment.
    Type: Grant
    Filed: February 6, 1997
    Date of Patent: December 14, 2004
    Assignee: Valtion Teknillinen Tutkimuskeskus
    Inventors: Matti Siika-Aho, Johanna Buchert, Tapani Vuorinen, Anita Teleman, Maija Tenkanen, Michael Bailey, Liisa Viikari
  • Patent number: 6768001
    Abstract: The present invention is directed to novel xylanases (referred to as XYL-IV) and to nucleic acid molecules encoding those xylanases. Also provided herein are vectors and host cells including those nucleic acid sequences, antibodies which bind to the xylanases of the present invention, methods for producing the xylanases of the present invention, and methods employing the xylanases of the present invention.
    Type: Grant
    Filed: May 31, 2002
    Date of Patent: July 27, 2004
    Assignee: Genencor International, Inc.
    Inventors: Markku L A Saloheimo, Matti Siika-Aho, Maija Tenkanen, Merja E. Penttila
  • Publication number: 20040069426
    Abstract: The present invention concerns a method for enzymatic treatment of lignocellulosic materials which contain xylan-polymers, such as cellulose kraft pulps. According to a method of the present kind, at least a part of the hexenuronic acid groups present in the material is selectively removed in order to remove metal ions from the pulp, to change the surface charge thereof, to improve the brightness stability of the pulp and to render the material more suitable for enzymatic treatment.
    Type: Application
    Filed: February 6, 1997
    Publication date: April 15, 2004
    Inventors: MATTI SIIKA-AHO, JOHANNA BUCHERT, TAPANI VUORINEN, ANITA TELEMAN, MAIJA TENKANEN, MICHAEL BAILEY, LIISA VIIKARI
  • Patent number: 6555335
    Abstract: The present invention is directed to novel xylanases (referred to as XYL-IV) and to nucleic acid molecules encoding those xylanases. Also provided herein are vectors and host cells including those nucleic acid sequences, antibodies which bind to the xylanases of the present invention, methods for producing the xylanases of the present invention, and methods employing the xylanases of the present invention.
    Type: Grant
    Filed: September 11, 2000
    Date of Patent: April 29, 2003
    Assignee: Genencor International, Inc.
    Inventors: Markku La Saloheimo, Matti Siika-Aho, Maija Tenkanen, Merja E. Penttila
  • Publication number: 20030054518
    Abstract: The present invention is directed to novel xylanases (referred to as XYL-IV) and to nucleic acid molecules encoding those xylanases. Also provided herein are vectors and host cells including those nucleic acid sequences, antibodies which bind to the xylanases of the present invention, methods for producing the xylanases of the present invention, and methods employing the xylanases of the present invention.
    Type: Application
    Filed: May 31, 2002
    Publication date: March 20, 2003
    Inventors: Markku La Saloheimo, Matti Siika-Aho, Maija Tenkanen, Merja E. Penttila
  • Patent number: 6325974
    Abstract: Package (1) for decayable foodstuffs (2), consisting of a package material (3) and forming a mainly closed package space (4) and a mainly closed indicator space (5) for an indicator (6).
    Type: Grant
    Filed: May 6, 1999
    Date of Patent: December 4, 2001
    Assignee: Valtion Teknillinen Tutkimuskeskus
    Inventors: Raija Ahvenainen, Timo Pullinen, Eero Hurme, Maria Smolander, Matti Siika-Aho
  • Patent number: 6099688
    Abstract: An enzymatic process for treating coarse pulp with an enzyme having cellobiohydrolase activity to reduce the specific energy requirements of the pulp and improve the properties of the pulp. Cellobiohydrolase enzymes isolated from the species Trichoderma, Aspergillus, Phanerochaete, Penicillium, Streptomyces, Humicola or Bacillus can be used.
    Type: Grant
    Filed: February 15, 1996
    Date of Patent: August 8, 2000
    Assignee: Valtion teknillinen tutkimuskeskus
    Inventors: Jaakko Pere, Matti Siika-aho, Liisa Viikari
  • Patent number: 5865949
    Abstract: A process for treating mechanical pulp having a cellobiohydrolase activity effective for modifying crystalline parts of the cellulose, an endo-.beta.-glucanase less than that which will significantly hydrolyze the cellulose, and a mannanase activity; and wherein the endo-.beta.-glucanase activity is low compared to the cellobiohydrolase activity.
    Type: Grant
    Filed: October 27, 1995
    Date of Patent: February 2, 1999
    Assignee: Valtion Teknillinen Tutkimuskeskus
    Inventors: Jaakko Pere, Matti Siika-aho, Liisa Viikari
  • Patent number: 5854047
    Abstract: The present invention relates to a DNA sequence, which codes for endomannanase produced by fungi of the genus Trichoderma and transferred into a yeast or fungus strain induces that strain to produce endomannanase, as well as to a method for isolating genes coding for endomannanases. The invention also relates to vectors, yeast strains and fungal strains containing the DNA sequence. Furthermore, the invention provides an enzyme product containing at least one endomannanase, which contains at least one of the following endomannanases produced by fungi of the Trichoderma genus: an enzyme having mannanase activity and an isoelectric point (pI) of about 3.8, an enzyme having mannanase activity and a pI of about 4.1, an enzyme having mannanase activity and a pI of about 4.5, an enzyme having mannanase activity and a pI of about 5.4 and an enzyme having mannanase activity and a pI of about 6.5, the isoelectric points being determined by isoelectric focusing.
    Type: Grant
    Filed: August 13, 1997
    Date of Patent: December 29, 1998
    Assignee: Rohm Enzyme Finland OY
    Inventors: Johanna Buchert, Matti Siika-aho, Liisa Viikari, Merja Penttila, Anu Saloheimo, Marjatta Ranua
  • Patent number: 5661021
    Abstract: The present invention relates to a DNA sequence, which codes for endomannanase produced by fungi of the genus Trichoderma and transferred into a yeast or fungus strain induces that strain to produce endomannanase, as well as to a method for isolating genes coding for endomannanases. The invention also relates to vectors, yeast strains and fungal strains containing the DNA sequence. Furthermore, the invention provides an enzyme product containing at least one endomannanase, which contains at least one of the following endomannanases produced by fungi of the Trichoderma genus: an enzyme having mannanase activity and an isoelectric point (pI) of about 3.8, an enzyme having mannanase activity and a pI of about 4.1, an enzyme having mannanase activity and a pI of about 4.5, an enzyme having mannanase activity and a pI of about 5.4 and an enzyme having mannanase activity and a pI of about 6.5, the isoelectric points being determined by isoelectric focusing.
    Type: Grant
    Filed: November 22, 1994
    Date of Patent: August 26, 1997
    Assignee: Alko Ltd.
    Inventors: Johanna Buchert, Matti Siika-aho, Liisa Viikari, Merja Penttila, Anu Saloheimo, Marjatta Ranua