Patents by Inventor Leena Rahkila

Leena Rahkila 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).

  • Process for the simultaneous production of xylitol and ethanol
    Patent number: 7625728
    Abstract: Effective processes are provided for the production of xylitol and ethanol and other products from solutions derived from lignocellulose-containing material in biomass. The solutions can be hydrolyzed or partially hydrolyzed before being fermented with microbes. The fermented solution can be distilled and can be subsequently separated, such as, by chromatographic separation, membrane separation, etc. The recovered xylitol solution can be crystallized to provide pure xylitol crystals.
    Type: Grant
    Filed: June 30, 2006
    Date of Patent: December 1, 2009
    Assignee: Danisco Sweeteners Oy
    Inventors: Olli-Pekka Eroma, Heikki Heikkila, Heikki Ojamo, Päivi Sarmala, Göran Hyöky, Leena Rahkila, Marja-Leena Sarkki, Tapio Viljava
  • Process for the simultaneous production of xylitol and ethanol
    Publication number: 20060246563
    Abstract: Effective processes are provided for the production of xylitol and ethanol and other products from solutions derived from lignocellulose-containing material in biomass. The solutions can be hydrolyzed or partially hydrolyzed before being fermented with microbes. The fermented solution can be distilled and can be subsequently separated, such as, by chromatographic separation, membrane separation, etc. The recovered xylitol solution can be crystallized to provide pure xylitol crystals.
    Type: Application
    Filed: June 30, 2006
    Publication date: November 2, 2006
    Inventors: Olli-Pekka Eroma, Heikki Heikkila, Heikki Ojamo, Paivi Sarmala, Goran Hyoky, Leena Rahkila, Marja-Leena Sarkki, Tapio Viljava
  • Process for the simultaneous production of xylitol and ethanol
    Patent number: 7109005
    Abstract: Effective processes are provided for the production of xylitol and ethanol and other products from solutions derived from lignocellulose-containing material in biomass. The solutions can be hydrolyzed or partially hydrolyzed before being fermented with microbes. The fermented solution can be distilled and can be subsequently separated, such as, by chromatographic separation, membrane separation, etc. The recovered xylitol solution can be crystallized to provide pure xylitol crystals.
    Type: Grant
    Filed: October 25, 2001
    Date of Patent: September 19, 2006
    Assignee: Danisco Sweeteners Oy
    Inventors: Olli-Pekka Eroma, Heikki Heikkila, Heikki Ojamo, Päivi Sarmala, Göran Hyöky, Leena Rahkila, Marja-Leena Sarkki, Tapio Viljava
  • Process for the simultaneous production of xylitol and ethanol
    Patent number: 6846657
    Abstract: The invention relates to a process for the simultaneous production of xylitol and ethanol from a hydrolyzed lignocellulose-containing material starting. The starting material is fermented with a yeast strain, the ethanol produced is recovered, a chromatographic separation is carried out on the remaining xylitol solution, and pure xylitol is crystallized.
    Type: Grant
    Filed: September 12, 1997
    Date of Patent: January 25, 2005
    Assignee: Xyrofin Oy
    Inventors: Heikki Heikkilä, Göran Hyöky, Leena Rahkila, Marja Leena Sarkki, Tapio Viljava
  • PROCESS FOR THE SIMULTANEOUS PRODUCTION OF XYLITOL AND ETHANOL
    Publication number: 20030235881
    Abstract: The invention relates to a process for the simultaneous production of xylitol and ethanol from a hydrolyzed lignocellulose-containing material, wherein the starting material is fermented with a yeast strain, the ethanol produced is recovered, a chromatographic separation is carried out on the remaining xylitol solution, and pure xylitol is crystallized.
    Type: Application
    Filed: September 12, 1997
    Publication date: December 25, 2003
    Inventors: HEIKKI HEIKKILA, GORAN HYOKY, LEENA RAHKILA, MARJA-LEENA SARKKI, TAPIO VILJAVA
  • Process for the simultaneous production of xylitol and ethanol
    Publication number: 20020164731
    Abstract: Effective processes are provided for the production of xylitol and ethanol and other products from solutions derived from lignocellulose-containing material in biomass. The solutions can be hydrolyzed or partially hydrolyzed before being fermented with microbes. The fermented solution can be distilled and can be subsequently separated, such as, by chromatographic separation, membrane separation, etc. The recovered xylitol solution can be crystallized to provide pure xylitol crystals.
    Type: Application
    Filed: October 25, 2001
    Publication date: November 7, 2002
    Inventors: Olli-Pekka Eroma, Heikki Heikkila, Heikki Ojamo, Paivi Sarmala, Goran Hyoky, Leena Rahkila, Marja-Leena Sarkki, Tapio Viljava
  • Method for the production of xylitol
    Patent number: 5081026
    Abstract: A method is disclosed for the production of xylitol from a xylose and/or xylan containing material. A solution containing xylitol and other hexoses is fermented with a yeast strain capable of converting free xylose to xylitol and other free hexoses present to ethanol, with the xylitol subsequently separated by chromatographic separation means.
    Type: Grant
    Filed: November 2, 1990
    Date of Patent: January 14, 1992
    Assignee: Suomen Xyrofin Oy
    Inventors: Heikki Heikkila, Juha Nurmi, Leena Rahkila, Marja Toyryla