Patents by Inventor Nestor Mikael Salminen

Nestor Mikael Salminen 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 equipment for producing foam bitumen
    Patent number: 5827360
    Abstract: The invention relates to a method and equipment for producing foam bitumen. Water is mixed to hot bitumen under a pressure which is lower than the prevailing absolute pressure, and after this the pressure is allowed to rise and the flow rate to drop. The mixing of water and bitumen occurs in a foaming reactor (17), which is connected via a pipeline (6, 8, 9, 10) to a spray bar (1), which also acts as a heat exchanger, and the changes in the flow caused by an inclination in the spray bar are compensated by means of pipes (6) and valves (7). The entire equipment is thermally insulated, and a part of it may be provided with electric heating to prevent the bitumen from solidifying. It is possible to circulate hot bitumen in the equipment by opening a valve (12), whereby the entire equipment is brought to an operating temperature.
    Type: Grant
    Filed: October 22, 1997
    Date of Patent: October 27, 1998
    Assignee: CMI Corporation
    Inventor: Nestor Mikael Salminen
  • Method and equipment for producing foam bitumen
    Patent number: 5788755
    Abstract: The invention relates to a method and equipment for producing foam bitumen. Water is mixed to hot bitumen under a pressure which is lower than the prevailing absolute pressure, and after this the pressure is allowed to rise and the flow rate to drop.
    Type: Grant
    Filed: October 9, 1996
    Date of Patent: August 4, 1998
    Assignee: CMI Corporation
    Inventor: Nestor Mikael Salminen