Patents by Inventor Esa Syvälahti

Esa Syvälahti 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 of washing vehicles
    Patent number: 6458215
    Abstract: A method of washing vehicles in which a vehicle is washed by an automatic vehicle washing apparatus. The washing apparatus includes a prewashing and washing device, which are arranged to move in relation to the vehicle to be washed in the longitudinal direction of the vehicle. Prewash agent is fed to the surface of the vehicle to be washed with the pseudo-pressure of the prewash exceeding 8 bar.
    Type: Grant
    Filed: September 13, 2000
    Date of Patent: October 1, 2002
    Assignee: Tammermatic Oy
    Inventors: Timo Hätinen, Esa Syvälahti