Patents by Inventor Marianne Guldberg

Marianne Guldberg 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).

  • Man-made vitreous fibres
    Patent number: 6949483
    Abstract: Man-made vitreous fibers have a solubility of pH 4.5 of at least 20 nm per day and a melt viscosity of 10 to 70 poise at 1400° C. Novel fibers contain at least 18% Al2O3. Particular products include external wall insulation or cladding and pipe sections. A composition for making suitable fibers may be selected by determining solubility at pH 4.5 or in macrophage.
    Type: Grant
    Filed: December 24, 2001
    Date of Patent: September 27, 2005
    Assignee: Rockwool International A/S
    Inventors: Soren Lund Jensen, Vermund Rust Christensen, Marianne Guldberg
  • Man-made vitreous fibres
    Publication number: 20020086790
    Abstract: Man-made vitreous fibers have a solubility of pH 4.5 of at least 20 nm per day and a melt viscosity of 10 to 70 poise at 1400° C. Novel fibers contain at least 18% Al2O3. Particular products include external wall insulation or cladding and pipe sections. A composition for making suitable fibers may be selected by determining solubility at pH 4.5 or in macrophage.
    Type: Application
    Filed: December 24, 2001
    Publication date: July 4, 2002
    Applicant: Rockwool International A/S
    Inventors: Soren Lund Jensen, Vermund Rust Christensen, Marianne Guldberg
  • Man-made vitreous fibres
    Patent number: 6346494
    Abstract: Man-made vitreous fibers have a solubility of pH 4.5 of at least 20 nm per day and a melt viscosity of 10 to 70 poise at 1400° C. Novel fibers contain at least 18% Al2O3. Particular products include external wall insulation or cladding and pipe sections. A composition for making suitable fibres may be selected by determining solubility at pH 4.5 or in macrophage.
    Type: Grant
    Filed: July 9, 1999
    Date of Patent: February 12, 2002
    Assignee: Rockwool International A/S
    Inventors: Soren Lund Jensen, Vermund Rust Christensen, Marianne Guldberg
  • Man-made vitreous fibres
    Patent number: 6319866
    Abstract: Man-made vitreous fibers have a solubility of pH 4.5 of at least 20 nm per day and a melt viscosity of 10 to 70 poise at 1400° C. Novel fibers contain at least 18% Al2O3. Particular products include external wall insulation or cladding and pipe sections. A composition for making suitable fibres may be selected by determining solubility at pH 4.5 or in macrophage.
    Type: Grant
    Filed: July 9, 1999
    Date of Patent: November 20, 2001
    Assignee: Rockwool International A/S
    Inventors: Soren Lund Jensen, Vermund Rust Christensen, Marianne Guldberg
  • Man-made vitreous fibres
    Patent number: 6156683
    Abstract: Man-made vitreous fibers have a solubility at pH 4.5 of at least 20 nm per day, a liquidus temperature of below 1300.degree. C., a viscosity at the liquidus temperature of about 300 poise, and a composition which includes at least 15% by weight Al.sub.2 O.sub.3.
    Type: Grant
    Filed: August 20, 1998
    Date of Patent: December 5, 2000
    Assignee: Rockwool International A/S
    Inventors: Svend Grove-Rasmussen, Soren Lund Jensen, Vermund Rust Christensen, Marianne Guldberg
  • Man-made vitreous fibres
    Patent number: 5935886
    Abstract: Man-made vitreous fibres has a solubility at pH 4.5 of at least 20 nm per day and a melt viscosity of 10-70 poise at 1,400.degree. C. and are formed from a composition which includes 18 to 30% by weight Al.sub.2 O.sub.3.
    Type: Grant
    Filed: May 8, 1997
    Date of Patent: August 10, 1999
    Assignee: Rockwool International A/S
    Inventors: Soren Lund Jensen, Vermund Rust Christensen, Marianne Guldberg
  • Man-made vitreous fibres
    Patent number: 5932500
    Abstract: Man-made vitreous fibres have a solubility at pH 4.5 of at least 20 nm per day and a melt viscosity of 10-70 poise at 1,400.degree. C. A composition which will provide these properties is selected for their manufacture and contains at least 10% by weight Al.sub.2 O.sub.3. Novel fibres contain at least 6% by weight Na.sub.2 O +K.sub.2 O.
    Type: Grant
    Filed: May 8, 1997
    Date of Patent: August 3, 1999
    Assignee: Rockwool International A/S
    Inventors: Soren Lund Jensen, Vermund Rust Christensen, Marianne Guldberg
  • Thermostable and biologically soluble mineral fibre compositions
    Patent number: 5583080
    Abstract: A fiberizable mineral composition which is thermostable and has a high dissolution rate in biological fluids includes 53.5-64 w/w % of SiO.sub.2, up to 4 w/w % of Al.sub.2 O.sub.3, 10-20 w/w % of CaO, 10-20 w/w % of MgO, and 6.5-9 w/w % of FeO, the total amount of FeO and Fe.sub.2 O.sub.3 calculated as FeO. A mineral fiber material made from the composition can be used for thermal and/or acoustic insulation purposes or as a plant growing medium or substrate.
    Type: Grant
    Filed: June 21, 1995
    Date of Patent: December 10, 1996
    Assignee: Rockwool International A/S
    Inventors: Marianne Guldberg, Vermund R. Christensen