Patents by Inventor Aimo I. Asikainen

Aimo I. Asikainen 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).

  • Waterwalls in a fluidized bed reactor
    Patent number: 5091156
    Abstract: A fluidized bed reactor generating heat has in its bottom part a grid for introduction of fluidizing gas into the rector and walls being made as waterwalls in which vertical water tubes are combined by flat plate material. The waterwalls are refractory lined in their lower part to withstand erosion and heat. The water tubes are bent outwards at an angle to the vertical plane in the intermediate section between the uncovered upper waterwall section and the refractory lined lower waterwall section in order to minimize erosion due to particles flowing downwards along the walls in the reactor.
    Type: Grant
    Filed: February 13, 1989
    Date of Patent: February 25, 1992
    Assignee: A. Ahlstrom Corporation
    Inventors: Lasse K. Ijas, Aimo I. Asikainen, Arto V. I. Hotta, Neil Raskin, James Stone, Gregory Beavers, David Watson