Patents by Inventor Erkki Iikka Sakari Rasanen

Erkki Iikka Sakari Rasanen 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).

  • Manufacturing of microcellulose
    Patent number: 9587038
    Abstract: The present invention relates to a process for producing microcellulose comprising a) acidifying fibrous cellulosic material, b) washing the acidified cellulosic material, c) optionally dewatering the washed cellulosic material, and d) hydrolyzing the washed or washed and dewatered cellulosic material under acidic conditions at a temperature of at least 120° C. and at a consistency of at least 8% on dry weight of the cellulose.
    Type: Grant
    Filed: June 6, 2011
    Date of Patent: March 7, 2017
    Assignee: Kemira Oyj
    Inventors: Erkki Iikka Sakari Rasanen, Leif Robertsen, Veli-Matti Vuorenpalo, Asko Karppi, Kari Parviainen, Olli Dahl, Kari Vanhatalo
  • MANUFACTURING OF MICROCELLULOSE
    Publication number: 20140179912
    Abstract: The present invention relates to a process for producing microcellulose comprising a) acidifying fibrous cellulosic material, b) washing the acidified cellulosic material, c) optionally dewatering the washed cellulosic material, and d) hydrolyzing the washed or washed and dewatered cellulosic material under acidic conditions at a temperature of at least 120° C. and at a consistency of at least 8% on dry weight of the cellulose.
    Type: Application
    Filed: June 6, 2011
    Publication date: June 26, 2014
    Inventors: Erkki Iikka Sakari Rasanen, Leif Robertsen, Veli-Matti Vuorenpalo, Asko Karppi, Kari Parviainen, Olli Dahl, Kari Vanhatalo