Patents by Inventor Arne R. Agnemo

Arne R. Agnemo 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).

  • Paper and a method of paper manufacture
    Patent number: 5368689
    Abstract: The present invention reduces the normally marked yellowing of paper which is at least partially based on lignin-containing pulps.The invention relates to paper produced from fibre material and other paper ingredients in the form of at least one chemical. The fibre material at least partially consists of pulp that contains lignin in an amount exceeding 0.5 percent by weight, and is characterized in that the paper includesa) an acid and/or a corresponding salt of the general formula (the acid form) ##STR1## whereR.sub.1 =--CHOHCH.sub.2 OH or --CHOHCOOHin an amount of at least 0.05 percent by weight, calculated on the fibre material; andb) a reduction agent in an amount of at least 0.05 percent by weight, calculated on the fibre material.
    Type: Grant
    Filed: June 3, 1993
    Date of Patent: November 29, 1994
    Assignee: Mo Och Domsjo Aktiebolag
    Inventor: Arne R. Agnemo