Patents by Inventor Jan Wasastjerna

Jan Wasastjerna 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 controlling the atmosphere of an essentially closed space
    Patent number: 5860857
    Abstract: The invention relates to a method for regulating the atmosphere in a substantially closed sports/exercise space (1) or an animal shelter (11), especially in terms of partial oxygen pressure. In the method, the normal atmosphere of said space (1; 11) is admixed with nitrogen for the creation of a desired low-oxygen (oxygen content <appr. 21%) atmosphere, said low-oxygen atmosphere corresponding to partial oxygen pressure in the air at a certain altitude above sea level. Alternatively, said normal atmosphere is admixed with oxygen for the creation of a desired high-oxygen (oxygen content>appr. 21%) atmosphere. Said mixing of nitrogen or oxygen with air is carried out at normal air pressure.
    Type: Grant
    Filed: May 13, 1996
    Date of Patent: January 19, 1999
    Assignee: AGA Aktiebolag
    Inventors: Jan Wasastjerna, Heikki Rusko