Patents by Inventor Wojciech Matuszewski

Wojciech Matuszewski 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).

  • Procedure and apparatus for the determination of concentration of ammonia, and a procedure for the manufacturing of a detector
    Patent number: 5498323
    Abstract: A procedure and an apparatus to determine the concentration of dissolved ammonia. A polypyrrole electrode (2), a reference electrode (1) and an auxiliary electrode (5) are placed in the liquid to be analyzed and the concentration of ammonia dissolved in the liquid is determined by a potential applied between the polypyrrole electrode (2) and the reference electrode (1) and of the current flowing between the polypyrrole electrode (2) and the auxiliary electrode (5). A polypyrrole layer (4) is formed on a platinum substrate (3).
    Type: Grant
    Filed: February 7, 1994
    Date of Patent: March 12, 1996
    Assignee: Kone Oy
    Inventors: Andrzej Lewenstam, Wojciech Matuszewski, Marek Trojanowicz