Patents by Inventor Juha Sivonen

Juha Sivonen 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).

  • Masonry fireplace, particularly a baking oven
    Patent number: 4850332
    Abstract: The invention relates to a masonry fireplace, particularly a baking oven, comprising: a furnace (4) in which the fuel is burnt and the bottom of which is formed by a baking grate (5), the furnace (4) being provided with an oven door (1) positioned in the front wall of the oven; an ash chest (7) positioned below the furnace (4) and provided with an ash door (2); a secondary fire chamber (10) positioned above the furnace (4) and into which a throat (9) leads from the back portion of the furnace (4); and substantially vertical cheek flues (15) extending downwards from the secondary fire chamber (10) on both sides of the oven door (1).
    Type: Grant
    Filed: October 27, 1987
    Date of Patent: July 25, 1989
    Inventor: Juha Sivonen