Patents by Inventor David A. Brand

David A. Brand 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).

  • Publication number: 20020161578
    Abstract: The present invention relates to systems and methods for audio processing. For example, the present invention provides systems and methods for receiving live speech, converting the speech to text, and transferring the text to a user. As desired, the speech or text can be translated into one or more different languages. Systems and methods for real-time conversion and transmission of speech and text are provided.
    Type: Application
    Filed: April 26, 2001
    Publication date: October 31, 2002
    Applicant: Speche Communications
    Inventors: Richard J. Saindon, Laurence H. Estrin, David A. Brand, Stephen Brand
  • Patent number: 6196319
    Abstract: An apparatus and method for removing sand and other debris from a wellbore. The apparatus is particularly suited for wireline operation, and requires minimal surface equipment. A housing is lowered into the wellbore until the housing is proximate to the sand, and a valve is opened to permit entry of the sand into a housing chamber. The housing can be raised to the wellbore surface so that the sand can be removed from the housing chamber. In one embodiment of the invention, the housing has two chambers each having a floating piston. A liquid is initially retained within the first chamber and is pressurized as the housing is lowered into the wellbore. Activation of a valve and differential pressures acting across the first piston move the liquid into the second chamber and draw the sand into the first chamber. The second chamber captures the liquid and facilitates return of the pistons to the initial position after the sand is emptied from the first chamber.
    Type: Grant
    Filed: June 21, 1999
    Date of Patent: March 6, 2001
    Assignee: Western Atlas International, Inc.
    Inventors: Rudolf Antonius Henskens, David Brands