Patents by Inventor Roelant Mathijs Hermant

Roelant Mathijs Hermant 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).

  • Preserved enhancement of bleaching catalysts
    Publication number: 20030232733
    Abstract: The present invention provides a catalytic bleaching system that is low in surfactant alkyl hydroperoxide and comprises an antioxidant.
    Type: Application
    Filed: June 4, 2003
    Publication date: December 18, 2003
    Applicant: Unilever Home & Personal Care USA, Division of Conopco, Inc.
    Inventors: Adrianus Cornelis Appel, Ronald Hage, Roelant Mathijs Hermant, Joachim Lienke, Simon Marinus Veerman
  • Enhancement of bleaching catalysts
    Publication number: 20030228994
    Abstract: The present invention provides a catalytic bleaching system that is low in surfactant alkyl hydroperoxide content.
    Type: Application
    Filed: June 5, 2003
    Publication date: December 11, 2003
    Applicant: Unilever Home & Personal Care USA, Division of Conopco, Inc.
    Inventors: Adrianus Cornelis Appel, Ronald Hage, Roelant Mathijs Hermant, Christiaan Lamers, Joachim Lienke
  • Air bleaching catalysts with moderating agent
    Patent number: 6586383
    Abstract: The invention relates to catalytically bleaching substrates, especially laundry fabrics, with a bleaching catalyst in the presence of an unsaturated surfactant.
    Type: Grant
    Filed: March 13, 2002
    Date of Patent: July 1, 2003
    Assignee: Unilever Home & Personal Care USA, division of Conopco, Inc.
    Inventors: Ronald Hage, Roelant Mathijs Hermant, Jean Hypolites Koek, Simon Marinus Veerman
  • Air bleaching catalysts with enhancer and moderating agent
    Patent number: 6551977
    Abstract: The invention relates to catalytically bleaching substrates, especially laundry fabrics, with a bleaching catalyst in the presence of an unsaturated organic compound and an activity moderator.
    Type: Grant
    Filed: March 13, 2002
    Date of Patent: April 22, 2003
    Assignee: Unilever Home & Personal Care USA, a division of Conopco, Inc.
    Inventors: Ronald Hage, Roelant Mathijs Hermant, Simon Marinus Veerman
  • Air bleaching catalysts with enhancer and moderating agent
    Publication number: 20030054968
    Abstract: The invention relates to catalytically bleaching substrates, especially laundry fabrics, with a bleaching catalyst in the presence of an unsaturated organic compound and an activity moderator.
    Type: Application
    Filed: March 13, 2002
    Publication date: March 20, 2003
    Applicant: Unilever Home & Personal Care USA, Division of Conopco, Inc.
    Inventors: Ronald Hage, Roelant Mathijs Hermant, Simon Marinus Veerman
  • Air bleaching catalysts with moderating agent
    Publication number: 20030054967
    Abstract: The invention relates to catalytically bleaching substrates, especially laundry fabrics, with a bleaching catalyst in the presence of an unsaturated surfactant.
    Type: Application
    Filed: March 13, 2002
    Publication date: March 20, 2003
    Applicant: Unilever Home & Personal Care USA, Division Conopco, Inc.
    Inventors: Ronald Hage, Roelant Mathijs Hermant, Jean Hypolites Koek, Simon Marinus Veerman
  • Composition and method for bleaching a substrate
    Publication number: 20030036492
    Abstract: The invention relates to catalytically bleaching substrates, especially laundry fabrics, with a transition metal catalyst and an anionic surfactant that readily forms micelles at a low concentration in solution.
    Type: Application
    Filed: April 5, 2002
    Publication date: February 20, 2003
    Applicant: Unilever Home & Personal Care USA, Division of Conopco, Inc.
    Inventors: Andrew Paul Chapple, Roelant Mathijs Hermant, Kerry Elizabeth Hodkinson
  • Composition and method for bleaching laundry fabrics
    Publication number: 20020013246
    Abstract: A bleaching composition for laundry fabrics is provided, comprising:
    Type: Application
    Filed: February 28, 2001
    Publication date: January 31, 2002
    Applicant: Unilever Home & Personal Care USA, Division of Conopco, Inc.
    Inventors: Roelant Mathijs Hermant, Christiaan Lamers
  • Detergent bleaching composition comprising pentadentate ligand derivatives
    Patent number: 6165963
    Abstract: A detergent bleaching composition is provided comprising a compound inclug a specified pentadentate nitrogen-containing ligand. The compound can activate hydrogen peroxide or peroxyacids and provides favourable stain removal properties, particularly in the presence or iron, manganese or copper ions. In addition, an improved stability in alkaline aqueous environment has been obtained, in particular at the peroxy compound concentrations generally present in the fabric washing liquor.
    Type: Grant
    Filed: November 3, 1999
    Date of Patent: December 26, 2000
    Assignee: Unilever Home & Personal Care USA, division of Conopco, Inc.
    Inventors: Michel Gilbert Delroisse, Bernard Lucas Feringa, Ronald Hage, Roelant Mathijs Hermant, Robertus Everardus Kalmeijer, Jean Hypolites Koek, Christiaan Lamers, Minze Theunis Rispens, Stephen William Russell, Ronaldus Theodorus Vliet, Jane Whittaker
  • Bleach and oxidation catalyst
    Patent number: 6140294
    Abstract: A bleach and oxidation catalyst is provided comprising a catalytically ace iron, manganese or copper complex including a specified pentadentate nitrogen-containing ligand. The metal complex can activate hydrogen peroxide or peroxyacids and provides favourable stain removal properties. In addition, a considerably improved stability of these metal complex compounds in alkaline aqueous environment has been obtained, in particular at the peroxy compound concentrations generally present in the fabric washing liquor.
    Type: Grant
    Filed: November 3, 1999
    Date of Patent: October 31, 2000
    Assignee: Unilever Home & Personal Care USA, division of Conopco, Inc.
    Inventors: Michel Gilbert Delroisse, Bernard Lucas Feringa, Ronald Hage, Roelant Mathijs Hermant, Robertus Everardus Kalmeijer, Jean Hypolites Koek, Christiaan Lamers, Minze Theunis Rispens, Stephen William Russell, Ronaldus Theodorus Vliet, Jane Whittaker
  • Bleach activation
    Patent number: 6022490
    Abstract: A bleach and oxidation catalyst is provided comprising a catalytically active metal-complex having a poly-dentate ligand containing at least 6 hetero-atoms. Such metal-complexes can activate hydrogen peroxide, peroxy acids or molecular oxygen and were found to have both favourable stain removal and remarkable dye transfer inhibition properties. In addition, these complexes can be easily prepared.
    Type: Grant
    Filed: June 19, 1997
    Date of Patent: February 8, 2000
    Assignee: Lever Brothers Company
    Inventors: Roelant Mathijs Hermant, Bas A. M. J. de Jong