Patents by Inventor Nicola Bleggi

Nicola Bleggi 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 lining underground pipes and apparatus for performing the method
    Patent number: 6632475
    Abstract: A method of creating a self-supporting waterproof lining in an underground pipe involves pulling a small carriage through the pipe and operating a rotary sprayer mounted on the carrier to spray an air-atomized, fast-setting organic compound on the interior of the pipe. Supply lines for air and the two parts of the compound pass through a union from the non-rotary carriage to the rotary sprayer.
    Type: Grant
    Filed: June 19, 2001
    Date of Patent: October 14, 2003
    Inventor: Nicola Bleggi