Patents by Inventor Helena M. K. Nevalainen

Helena M. K. Nevalainen 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).

  • DNA, vectors and transformed hosts encoding Trichoderma reesei endoglucanase I
    Patent number: 5393670
    Abstract: Methods and means for the construction of strains of yeast capable of producing cellulolytic enzymes, achieved by the transfer of chromosomal genes or cDNA copies of mRNAs coding for cellulolytic enzymes isolated from the fungus Trichoderma reesei to yeast cells using recombinant DNA vectors capable of replicating in yeast. The correct expression of these cellulolytic genes in yeast leads to the production of cellulolytic enzymes which are secreted from the cell. This allows the yeast to hydrolyze 3-1,4-glucan substrates such as cellulose.
    Type: Grant
    Filed: July 23, 1993
    Date of Patent: February 28, 1995
    Assignee: Oy Alko AB
    Inventors: Jonathan Knowles, Merja Penttila, Tuula Teeri, Helena M. K. Nevalainen, Paivi Lehtovaara-Helenius