Patents by Inventor Roy Rennesund

Roy Rennesund 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).

  • Liquid feed flame spray modification of nanoparticles
    Patent number: 7700152
    Abstract: Nano- and micron sized metal oxide and mixed metal oxide particles are injected into a high temperature region wherein the temperature is between about 400° C. and less than 2000° C., and collected as particles or as coatings wherein a particulate nature is substantially maintained. The particles are altered in at least one of phase, morphology, composition, and particle size distribution, and may achieve further changes in these characteristics by coinjection of metal oxide precursor in liquid form.
    Type: Grant
    Filed: February 25, 2005
    Date of Patent: April 20, 2010
    Assignee: The Regents of the University of Michigan
    Inventors: Richard M. Laine, Julien Marchal, José Azurdia, Roy Rennesund
  • Liquid feed flame spray modification of nanoparticles
    Publication number: 20060087062
    Abstract: Nano- and micron sized metal oxide and mixed metal oxide particles are injected into a high temperature region wherein the temperature is between about 400° C. and less than 2000° C., and collected as particles or as coatings wherein a particulate nature is substantially maintained. The particles are altered in at least one of phase, morphology, composition, and particle size distribution, and may achieve further changes in these characteristics by coinjection of metal oxide precursor in liquid form.
    Type: Application
    Filed: February 25, 2005
    Publication date: April 27, 2006
    Inventors: Richard Laine, Julien Marchal, Jose Azurdia, Roy Rennesund
  • Light expanded clay aggregates for phosphorous removal
    Patent number: 6627083
    Abstract: Sintered light expanded clay aggregates are described that are prepared by expanding and firing a clay-based material, and where the finished aggregates have a diameter of up to about 32 mm, for use as filtration medium for purifying water, wherein carbonates of calcium and/or magnesium are added to the clay as flux material prior to expansion and firing. Uses of the expanded clay aggregates for removing phosphorous by utilising die clay aggregates are also described, as well as a method for removing phosphorus by using the clay aggregates.
    Type: Grant
    Filed: February 21, 2001
    Date of Patent: September 30, 2003
    Assignee: A.S. Norsk Leca
    Inventors: Roy Rennesund, Petter Deinboll Jenssen, Tore Krogstad
  • Light expanded clay aggregates for phosphorus removal
    Publication number: 20020179534
    Abstract: Sintered light expanded clay aggregates are described that are prepared by expanding and firing a clay-based material, and where the finished aggregates have a diameter of up to about 32 mm, for use as filtration medium for purifying water, wherein carbonates of calcium and/or magnesium are added to the clay as flux material prior to expansion and firing. Uses of the expanded clay aggregates for removing phosphorous by utilising die clay aggregates are also described, as well as a method for removing phosphorus by using the clay aggregates.
    Type: Application
    Filed: February 21, 2001
    Publication date: December 5, 2002
    Applicant: a. s Norsk Leca
    Inventors: Roy Rennesund, Petter Deinboll Jenssen, Tore Krogstad