Patents by Inventor Samuli Puhakka

Samuli Puhakka 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).

  • Method and apparatus for preparing polyaniline
    Patent number: 6509502
    Abstract: In a method for preparing polyaniline, aniline is polymerized in a reactor in a polymerization medium containing aniline and oxidant. The polymerization is performed in a reactor in which the ratio of the heat transfer surface to the reaction volume is at least 10/m, preferably at least 20/m. In the apparatus, the polymerization is performed in a tubular reactor by allowing a medium containing aniline and oxidant to flow in a mixed flow through the tubular reactor. The tubular reactor is equipped with static mixers, and there can be several tubular reactors in parallel.
    Type: Grant
    Filed: November 10, 2000
    Date of Patent: January 21, 2003
    Inventors: Matti Jussila, Toivo Kärnä, Jukka Koskinen, Ilkka Turunen, Samuli Puhakka