Patents by Inventor David Kalkstein

David Kalkstein 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).

  • Apparatus for producing foamable compositions and other compositions
    Patent number: 6550750
    Abstract: An apparatus for making a long lasting foam. The apparatus includes an injection chamber, an expansion chamber and a coiled hose which extends therebetween. The coiled hose includes a plurality of turns. A pressure generating pump is provided to force a stream of a foam solution into the injection chamber where it is mixed with a pressurized stream of air and passed through the injection chamber, through the coiled hose, and through the expansion chamber in order to yield a foam having desirable stability and expansion characteristics.
    Type: Grant
    Filed: October 25, 2000
    Date of Patent: April 22, 2003
    Inventors: David Kalkstein, John Edward Balkiewicz