Patents by Inventor Richard Davison

Richard Davison 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).

  • Vapor-compression evaporative air conditioning systems and components
    Patent number: 6684658
    Abstract: Novel vapor compression evaporative cooling systems which use water as a refrigerant are provided, as are methods for using same. Also provided are novel compressors, compressor components, and means for removing noncondensibles useful in such cooling systems.
    Type: Grant
    Filed: September 28, 2001
    Date of Patent: February 3, 2004
    Assignee: The Texas A&M University System
    Inventors: Mark T. Holtzapple, Richard Davison, G. Andrew Rabroker
  • Vapor-compression evaporative air conditioning systems and components
    Patent number: 6427453
    Abstract: Novel vapor compression evaporative cooling systems which use water as a refrigerant are provided, as are methods for using same. Also provided are novel compressors, compressor components, and means for removing noncondensibles useful in such cooling systems.
    Type: Grant
    Filed: July 31, 1998
    Date of Patent: August 6, 2002
    Assignee: The Texas A&M University System
    Inventors: Mark T. Holtzapple, Richard Davison, G. Andrew Rabroker
  • Vapor-compression evaporative air conditioning systems and components
    Publication number: 20020088243
    Abstract: Novel vapor compression evaporative cooling systems which use water as a refrigerant are provided, as are methods for using same. Also provided are novel compressors, compressor components, and means for removing noncondensibles useful in such cooling systems.
    Type: Application
    Filed: September 28, 2001
    Publication date: July 11, 2002
    Inventors: Mark T. Holtzapple, Richard Davison, G. Andrew Rabroker
  • Apparatus for producing organic acids
    Patent number: 5962307
    Abstract: A continuous process and apparatus for preparing organic acids and their salts from biomass. Biomass flows from a region of fresh biomass and high acid and acid salt concentration to a region of digested biomass and low acid and acid salt concentration in a fermentation apparatus under anaerobic conditions. Organic acids and acid salts produced by the process of the present invention are volatile fatty acids such as acetic, butyric and propionic acids and their salts such as calcium acetate, calcium propionate, and calcium butyrate. The apparatus of the present invention contains at least two fermentation reactors in series to increase the biomass residence time in the reactors. The fermentation reactors of the present invention are imbedded in the ground with earthen berms as support for sides having three layers. The core of the reactors are covered with a flexible covering to maintain an anaerobic environment.
    Type: Grant
    Filed: October 23, 1997
    Date of Patent: October 5, 1999
    Assignee: The Texas A&M University System
    Inventors: Mark Holtzapple, Richard Davison, Mitch Loescher, Michael K. Ross
  • Method and apparatus for producing organic acids
    Patent number: 5874263
    Abstract: A continuous process and apparatus for preparing organic acids and their salts from biomass. Biomass flows from a region of fresh biomass and high acid and acid salt concentration to a region of digested biomass and low acid and acid salt concentration in a fermentation apparatus under anaerobic conditions. Organic acids and acid salts produced by the process of the present invention are volatile fatty acids such as acetic, butyric and propionic acids and their salts such as calcium acetate, calcium propionate, and calcium butyrate. The apparatus of the present invention contains at least two fermentation reactors in series to increase the biomass residence time in the reactors. The fermentation reactors of the present invention are imbedded in the ground with earthen berms as support for sides having three layers. The core of the reactors are covered with a flexible covering to maintain an anaerobic environment.
    Type: Grant
    Filed: July 31, 1996
    Date of Patent: February 23, 1999
    Assignee: The Texas A&M University System
    Inventors: Mark Holtzapple, Richard Davison, Mitch Loescher, Michael K. Ross