Patents by Inventor John A. Roper, III

John A. Roper, III 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).

  • Paper Manufacturing Using Agglomerated Hollow Particle Latex
    Publication number: 20080041544
    Abstract: Agglomerated hollow latex particles are employed in the wet end of the paper making process to provide paper with improved properties.
    Type: Application
    Filed: August 24, 2005
    Publication date: February 21, 2008
    Inventors: John Tsavalas, Carleton Gaupp, John Roper III, James Galloway
  • Method and apparatus for fiber optic backscattered light measurement to determine flow rates of multi-phase streams
    Patent number: 4978863
    Abstract: Flow rates of multi-phase streams may be determined by use of a fiber optic probe which establishes an illuminated sensing zone of finite dimensions. The probe collects light backscattered from the zone, the collected light being converted by a photodiode to voltage waveforms. Flow rate is determined by sampling voltage waveforms at discrete points in time, the sample being digitized and the digits being autocorrelated for such discrete points.
    Type: Grant
    Filed: September 6, 1988
    Date of Patent: December 18, 1990
    Assignee: The Dow Chemical Company
    Inventors: John W. Lyons, John A. Roper, III, Peter D. Aldrich