Patents by Inventor Matthew Pratt

Matthew Pratt 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).

  • Detection and use of acoustic signal quality indicators
    Patent number: 8812326
    Abstract: A computer-driven device assists a user in self-regulating speech control of the device. The device processes an input signal representing human speech to compute acoustic signal quality indicators indicating conditions likely to be problematic to speech recognition, and advises the user of those conditions.
    Type: Grant
    Filed: August 6, 2013
    Date of Patent: August 19, 2014
    Assignee: Promptu Systems Corporation
    Inventors: Naren Chittar, Vikas Gulati, Matthew Pratt, Harry Printz
  • DETECTION AND USE OF ACOUSTIC SIGNAL QUALITY INDICATORS
    Publication number: 20130325485
    Abstract: A computer-driven device assists a user in self-regulating speech control of the device. The device processes an input signal representing human speech to compute acoustic signal quality indicators indicating conditions likely to be problematic to speech recognition, and advises the user of those conditions.
    Type: Application
    Filed: August 6, 2013
    Publication date: December 5, 2013
    Inventors: Naren CHITTAR, Vikas GULATI, Matthew PRATT, Harry PRINTZ
  • Detection and use of acoustic signal quality indicators
    Patent number: 8521537
    Abstract: A computer-driven device assists a user in self-regulating speech control of the device. The device processes an input signal representing human speech to compute acoustic signal quality indicators indicating conditions likely to be problematic to speech recognition, and advises the user of those conditions.
    Type: Grant
    Filed: April 3, 2007
    Date of Patent: August 27, 2013
    Assignee: Promptu Systems Corporation
    Inventors: Naren Chittar, Vikas Gulati, Matthew Pratt, Harry Printz
  • Detection and Use of Acoustic Signal Quality Indicators
    Publication number: 20090299741
    Abstract: A computer-driven device assists a user in self-regulating speech control of the device. The device processes an input signal representing human speech to compute acoustic signal quality indicators indicating conditions likely to be problematic to speech recognition, and advises the user of those conditions.
    Type: Application
    Filed: April 3, 2007
    Publication date: December 3, 2009
    Inventors: Naren Chittar, Vikas Gulati, Matthew Pratt, Harry Printz
  • Process for making high purity sodium sulfate
    Patent number: 7514051
    Abstract: A method for purifying heavy metal impurities (such as antimony, arsenic, iron, cadmium, and lead) from 28 to 38 weight percent aqueous crude sodium sulfate solution is achieved by adding ferric sulfate to the aqueous crude sodium sulfate solution to form a suspension, progressively neutralizing the suspension from a pH of less than 3.5 up to at least 6, and separating the ferric-sulfate-nucleated precipitate from the suspension. An oxidizing agent such as peroxide is optionally added to the suspension to augment adsorption of the heavy metals.
    Type: Grant
    Filed: October 25, 2005
    Date of Patent: April 7, 2009
    Assignee: The Doe Run Resources Corporation
    Inventor: Matthew Pratt
  • Process for making high purity sodium sulfate
    Publication number: 20060163164
    Abstract: A method for purifying heavy metal impurities (such as antimony, arsenic, iron, cadmium, and lead) from 28 to 38 weight percent aqueous crude sodium sulfate solution is achieved by adding ferric sulfate to the aqueous crude sodium sulfate solution to form a suspension, progressively neutralizing the suspension from a pH of less than 3.5 up to at least 6, and separating the ferric-sulfate-nucleated precipitate from the suspension. An oxidizing agent such as peroxide is optionally added to the suspension to augment adsorption of the heavy metals.
    Type: Application
    Filed: October 25, 2005
    Publication date: July 27, 2006
    Inventor: Matthew Pratt