Patents by Inventor Hannele Nikander

Hannele Nikander 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).

  • Preparation method
    Patent number: 7767813
    Abstract: The present invention is directed to a novel method for the preparation of high purity irinotecan. This can be achieved by eliminating the excess of the other reagent, bipiperidinyl-1?-carbonyl chloride after it has reacted with 7-ethyl-10-hydroxy camptothecin and crystallizing the final product from a suitable solvent.
    Type: Grant
    Filed: February 6, 2006
    Date of Patent: August 3, 2010
    Assignee: Fermion Oy
    Inventors: Ilpo Laitinen, Hannele Nikander
  • Preparation Method
    Publication number: 20080161572
    Abstract: The present invention is directed to a novel method for the preparation of high purity irinotecan. This can be achieved by eliminating the excess of the other reagent, bipiperidinyl-1?-carbonyl chloride after it has reacted with 7-ethyl-10-hydroxy camptothecin and crystallizing the final product from a suitable solvent.
    Type: Application
    Filed: February 6, 2006
    Publication date: July 3, 2008
    Inventors: Ilpo Laitinen, Hannele Nikander
  • Anhydrous lactitol crystals, a product containing the same and a process for the preparation thereof as well as use thereof
    Patent number: 6872414
    Abstract: The invention relates to novel anhydrous (?) lactitol crystals, belonging to the orthorhombic P212121 cystal system and having unit cell constants a=9.6 ?, b=11.1 ?, c=14.0 ?. The invention also relates to crystalline lactitol products containing the novel anhydrous ? lactitol and to a process for the preparation thereof by crystallizing from an aqueous solution of lactitol. The novel anhydrous ? lactitol is stable and nonhygroskopic and it may be used as a substitute for sugar in foodstuffs and sweets, in as well as in pharmaceutical and hygienic products.
    Type: Grant
    Filed: September 20, 2000
    Date of Patent: March 29, 2005
    Assignee: Xyrofin Oy
    Inventors: Craig Myers, Heikki Heikkila, Hannele Nikander, Juha Nurmi, Johanna Nygren, Paula Perkkalainen, Tammy Pepper, Ilkka Pitkanen, Jussi Valkonen
  • Method for producing xylitol
    Patent number: 5998607
    Abstract: The invention relates to a method for producing xylitol from a material containing xylose and xylonic acid. According to the method, xylose and xylonic acid are separated from the material containing xylose and xylonic acid, whereafter the separated xylose and xylonic acid are reduced to xylitol, and the xylitol is recovered.
    Type: Grant
    Filed: June 24, 1997
    Date of Patent: December 7, 1999
    Assignee: Xyrofin Oy
    Inventors: Heikki Heikkila, Outi Puuppo, Matti Tylli, Hannele Nikander, Johanna Nygren, Mirja Lindroos, Olli-Pekka Eroma