Patents by Inventor Olavi A. Leppanen

Olavi A. Leppanen 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 for mashing starch-rich material for alcohol production
    Patent number: 4415659
    Abstract: This invention relates to a method for mashing starch-rich material, for example whole grain or partially crushed grain, when manufacturing alcohol. The method has a very low energy consumption, because the amount of water added to the starch-rich material in the beginning of the mashing stage is low. High pressure steam and a short processing time are used to keep the starch-rich material to water ratio during the processing stage below 1:2 because very little water is condensed from the water vapor during a short period. The mashed material is finally broken down by "shooting" the material from the reactor by using pressurized air.
    Type: Grant
    Filed: January 22, 1982
    Date of Patent: November 15, 1983
    Assignee: Oy Alko AB
    Inventors: Pentti P. Ronkainen, Olavi A. Leppanen, Kai J. Harju, Pertti J. Erapolku
  • Easily maintained bubble-cap column for the distillation of clogging and high-sediment liquids
    Patent number: 4207276
    Abstract: A bubble-cap column for the distillation of high-sediment or clogging liquids is disclosed, in which the bubble-cap structures comprising a bubble-cap and a neck are detachable and removable from the column and lined with polytetrafluoroethylene.
    Type: Grant
    Filed: October 4, 1978
    Date of Patent: June 10, 1980
    Assignee: Oy Alko AB
    Inventors: Pentti P. Ronkainen, Olavi A. Leppanen, Kyosti T. Vento, Heimo K. Pesonen