Patents by Inventor Imran T. Siddiqui

Imran T. Siddiqui 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 aspirating liquid from a container
    Patent number: 6908226
    Abstract: A method and apparatus for aspirating a liquid (e.g., blood) from a container uses an electrically biased thermistor element, mounted proximate the tip of a liquid-aspirating probe, to determine that the probe is safely submerged within a body of liquid to be aspirated at all times during the aspiration process. Also disclosed are different aspiration probe assemblies that are useful in the method and apparatus of the invention.
    Type: Grant
    Filed: February 7, 2003
    Date of Patent: June 21, 2005
    Assignee: Beckman Coulter, Inc.
    Inventors: Imran T. Siddiqui, Santos E. Vargas, Roberto Del Valle
  • Method and apparatus for aspirating liquid from a container
    Publication number: 20040156417
    Abstract: A method and apparatus for aspirating a liquid (e.g., blood) from a container uses an electrically biased thermistor element, mounted proximate the tip of a liquid-aspirating probe, to determine that the probe is safely submerged within a body of liquid to be aspirated at all times during the aspiration process. Also disclosed are different aspiration probe assemblies that are useful in the method and apparatus of the invention.
    Type: Application
    Filed: February 7, 2003
    Publication date: August 12, 2004
    Inventors: Imran T. Siddiqui, Santos E. Vargas, Roberto Del Valle
  • Method and apparatus for aspirating and dispensing liquids
    Patent number: 6322752
    Abstract: A method and apparatus for aspirating and dispensing precise volumes of liquid, e.g. whole blood, comprises an aspiration probe or needle having an internal volume precisely equal to a desired volume to be dispensed, and a computer-controlled shear valve for trapping aspirated liquid inside the probe for subsequent dispensing. A liquid sensor positioned downstream of the shear valve cooperates with a liquid level sensor on the probe tip to assure that the probe lumen is filled with the aspirated liquid.
    Type: Grant
    Filed: September 8, 1999
    Date of Patent: November 27, 2001
    Assignee: Coulter International Corp.
    Inventors: Imran T. Siddiqui, Roberto del Valle, Santos Vargas, Pedro P. Cabrera