Patents by Inventor Lawrence B. Saidman

Lawrence B. Saidman 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 apparatus for dispensing foam materials
    Patent number: 5556471
    Abstract: A method and apparatus for dispensing a polymer foam includes apparatus for forming a pressurized solution of intermixed polymeric material and gas. The polymeric material remains intermixed with the gas while the solution is maintained above a critical pressure. The pressurized solution is dispensed in wide band through an elongated slot. The dispensing apparatus includes an exit slot section in which the pressure of the solution drops below the critical pressure and the foam begins to form. The solution is maintained above the critical pressure until the solution enters the exit slot section so that premature foaming of the material is prevented.
    Type: Grant
    Filed: May 17, 1994
    Date of Patent: September 17, 1996
    Assignee: Nordson Corporation
    Inventors: George E. Boccagno, Lawrence B. Saidman, Robert L. Wacker
  • Discharge portion of a liquid filament dispensing valve
    Patent number: D456427
    Type: Grant
    Filed: March 22, 2001
    Date of Patent: April 30, 2002
    Assignee: Nordson Corporation
    Inventors: Charles A. Gressett, Jr., John M. Riney, Lawrence B. Saidman, Paul Schmidt