Patents by Inventor William E Brach

William E Brach 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).

  • Systems and methods for control of pumps employing electrical field sensing
    Patent number: 6984218
    Abstract: Systems and related methods pump fluid through a pump. The pump comprises a pump chamber, which is responsive to applied pressures to convey fluid. The systems and methods place an electrode in electrical conductive contact with fluid in the pump chamber which, in use, is coupled to an electrical source. The electrode generates an electrical field in the pump chamber that varies according volume of fluid in the pump chamber. The systems and methods register variations in the electrical field as fluid is conveyed through the pump chamber.
    Type: Grant
    Filed: May 21, 2002
    Date of Patent: January 10, 2006
    Assignee: Baxter International Inc.
    Inventors: Abinash Nayak, James Jacobson, Tom Westberg, William E Brach, Richard I Brown
  • System and methods for control of pumps employing electrical field sensing
    Patent number: 6261065
    Abstract: Systems and related methods pump fluid through a pump. The pump comprises a pump chamber, which is responsive to applied pressures to convey fluid. The systems and methods place an electrode in the pump chamber which, in use, is coupled to a current source. The electrode generates an electrical field in the pump chamber that varies according volume of fluid in the pump chamber. The systems and methods register variations in the electrical field as fluid is conveyed through the pump chamber.
    Type: Grant
    Filed: September 3, 1999
    Date of Patent: July 17, 2001
    Assignee: Baxter International Inc.
    Inventors: Abinash Nayak, James D. Jacobson, Tom Westberg, William E Brach, Richard I Brown