Patents by Inventor Ossi Helander

Ossi Helander 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 manufacturing pipe fitting, and pipe fitting
    Patent number: 6258197
    Abstract: The invention relates to a method for manufacturing a pipe fitting, said method comprising manufacturing a preform (1) of plastic, and forming an additional layer (3) on top of it. According to the invention, the additional layer (3) is formed by winding a film on the preform until the desired total wall thickness is reached, and the film is wound using at the same time pretensioning in a desired direction. The invention further relates to a pipe fitting manufactured by this method.
    Type: Grant
    Filed: October 23, 1998
    Date of Patent: July 10, 2001
    Assignee: Uponor Innovation AB
    Inventor: Ossi Helander