Patents by Inventor Ritva Saarelainen

Ritva Saarelainen 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).

  • Enzyme preparations and methods for their production
    Patent number: 5837515
    Abstract: The structure of the T. reesei xln1 and xln2 genes and the primaru structure of proteins are described. Enzyme preparations enriched in hemicellulase enzymes are described. Such enzyme preparations may also be partially or completely deficient in cellulose degrading activity. Such preparations may be utilized in an crude, unpurified form and are especially useful in the production of pulp and paper.
    Type: Grant
    Filed: September 16, 1993
    Date of Patent: November 17, 1998
    Assignee: Alko-Yhtiot Oy
    Inventors: Pirkko Suominen, Helena Nevalainen, Ritva Saarelainen, Marja Paloheimo, Richard Fagerstrom