Patents by Inventor James B. Wickman

James B. Wickman 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).

  • Low volume dispense unit and method of using
    Patent number: 6857543
    Abstract: A method for dispensing a chemical solution in the small-scale manufacture of semiconductors is provided. The method includes associating a dispensing unit with a semiconductor coat/develop track machine and a pneumatic syringe of a chemical solution with the dispensing unit. A dispensing pressure is applied to the pneumatic syringe. The flow control diaphragm is opened to allow the dispensing pressure to drive the chemical solution from the dispensing nozzle, while the drip prevention diaphragm is moved from a first position to a second position. The flow control diaphragm is closed to prevent the dispensing pressure from driving the chemical solution from the dispensing nozzle, while the drip prevention diaphragm is returned to the first position to generate a suck-back force in the flow path at the dispensing nozzle.
    Type: Grant
    Filed: November 27, 2002
    Date of Patent: February 22, 2005
    Assignee: Shipley Company, L.L.C.
    Inventors: Karen Kvam, James B. Wickman
  • Low volume dispense unit and method of using
    Publication number: 20030197038
    Abstract: A method for dispensing a chemical solution in the small-scale manufacture of semiconductors is provided. The method includes associating a dispensing unit with a semiconductor coat/develop track machine and a pneumatic syringe of a chemical solution with the dispensing unit. A dispensing pressure is applied to the pneumatic syringe. The flow control diaphragm is opened to allow the dispensing pressure to drive the chemical solution from the dispensing nozzle, while the drip prevention diaphragm is moved from a first position to a second position. The flow control diaphragm is closed to prevent the dispensing pressure from driving the chemical solution from the dispensing nozzle, while the drip prevention diaphragm is returned to the first position to generate a suck-back force in the flow path at the dispensing nozzle.
    Type: Application
    Filed: November 27, 2002
    Publication date: October 23, 2003
    Applicant: Shipley Company, L.L.C.
    Inventors: Karen Kvam, James B. Wickman