Patents by Inventor Christian Victor Stevens

Christian Victor Stevens 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).

  • Patent number: 7829599
    Abstract: Methods of making emulsions comprising: adding an emulsifying agent comprising glucoside alkyl urethanes of formula: A(O—CO—NH—R)S, wherein A represents a glucosyl unit having a Dextrose Equivalent (D.E.) ranging from 1 to 47, and wherein R represents a linear or branched, saturated or unsaturated alkyl group containing from 3 to 22 carbon atoms, and s is the degree of substitution (DS) ranging from about 0.01 to about 2.0; to an aqueous based liquid and a dispersed product; followed by mixing to create a stable dispersion. The glucoside alkyl urethanes present properties of thermal and chemical stability with biodegradability and free of phosphor/phosphates. The glucoside alkyl urethanes are suitable as surfactants for use in household and industrial applications, e.g., as detergents, emulsifiers, emulsion stabilizers, foaming agents, foam stabilizers, dispersants and wetting agents.
    Type: Grant
    Filed: March 26, 2007
    Date of Patent: November 9, 2010
    Assignee: Tiense Suikerraffinaderij N.V.
    Inventors: Christian Victor Stevens, Alessia Meriggi, Karl Booten
  • Patent number: 7485689
    Abstract: Disclosed are glucoside alkyl urethanes composed of units of the formula: A(O—CO—NH—R)3 wherein A represents a glucosyl unit of a starch hydrolysate molecule, the starch hydrolysate having a Dextrose Equivalent (D.E.) ranging from 1 to 47, (O—CO—NH—R) represents an N-alkyl aminocarbonyloxy group replacing a hydroxyl group of the glucosyl unit A, and wherein R represents a linear or branched, saturated or unsaturated alkyl group containing from 3 to 22 carbon atoms, and s represents the number of alkyl carbamate groups per glucosyl unit which number is expressed as degree of substitution (DS) with said DS value ranging from about 0.01 to about 2.0 which are useful as surface-active agents. Also disclosed are a method for their manufacture and compositions containing one or more glucoside alkyl urethanes. The glucoside alkyl urethanes have good to excellent tensio-active properties in combination with good biodegrability and they are suitable as surfactants for use in household and industrial applications, e.g.
    Type: Grant
    Filed: December 12, 2000
    Date of Patent: February 3, 2009
    Assignee: Tiense Suikerraffinaderij N.V.
    Inventors: Christian Victor Stevens, Alessia Meriggi, Karl Booten
  • Publication number: 20040248761
    Abstract: The invention relates to the use as surfactant, for the preparation of dispersions of multiphase systems that comprise a continuous aqueous phase containing a high concentration of electrolytes, of hydrophobically modified saccharides of general formula (I) and (II) [A]n(—M)s (I) [B]m(—M)s′(II) wherein [A]n represents a fructan-type saccharide [B]m represents a starch-type saccharide (—M) represents a hydrophobic moiety that substitutes a hydrogen atom of a hydroxyl group of the fructosyl and/or glucosyl units of the fructan-type and starch-type saccharides, which is selected from the group consisting of an alkylcarbamoyl radical of formula R—NH—CO— and an alkylcarbonyl radical of formula R—CO—, wherein R represents a linear or branched, saturated or unsaturated alkyl group with from 4 to 32 carbon atoms, and s and s′, which can have the same value or not, represent the number of said hydrophobic moieties that
    Type: Application
    Filed: March 26, 2004
    Publication date: December 9, 2004
    Inventors: Karl Booten, Bart Levecke, Christian Victor Stevens
  • Publication number: 20030125482
    Abstract: The invention concerns the use as surface-active agent of a glucoside alkyl urethane (I) which is composed of units of the general formula (II): A(O—CO—NH—R)s wherein A represents a glucosyl unit of a starch hydrolysate molecule, the starch hydrolysate having a Dextrose Equivalent (D.E.) ranging from 1 to 47, (O—CO—NH—R) represents an N-alkyl aminocarbonyloxy group replacing a hydroxyl group of the glucosyl unit A, and wherein R represents a linear or branched, saturated or unsaturated alkyl group containing from 3 to 22 carbon atoms, and s represents the number of alkyl carbamate groups per glucosyl unit which number is expressed as degree of substitution (DS) with said DS value ranging from about 0.01 to about 2.0. The invention further relates to novel glucoside alkyl urethanes (I), and a method for their manufacture and to compositions containing one or more of glucoside alkyl urethanes (I).
    Type: Application
    Filed: August 27, 2002
    Publication date: July 3, 2003
    Inventors: Christian Victor Stevens, Alessia Meriggi, Karl Booten
  • Patent number: 6534647
    Abstract: The invention concerns the use as surface-active agent of a fructan N-alkylurethane (I) which is composed of saccharide units of general formula (II) A(O—CO—NH—R)s  (II) wherein A represents a fructosyl unit (F) or a terminal glucosyl unit (G) of said fructan, being a levan or an inulin, with a degree of polymerisation (DP) of minimum 3, (O—CO—NH—R) represents an N-alkylaminocarbonyloxy group replacing a hydroxyl group of the saccharide unit A, wherein R represents a linear or branched, saturated or unsaturated alkyl group containing from 3 to 22 carbon atoms and any mixture thereof, and s represents the number of N-alkylaminocarbonyloxy groups per saccharide unit which is expressed as degree of substitution (DS), and said DS has a value ranging from 0.10 to 2.0. The invention further relates to novel fructan N-alkylurethanes (I), in particular inulin N-alkylurethanes (I), and a method for their manufacture.
    Type: Grant
    Filed: December 11, 2000
    Date of Patent: March 18, 2003
    Assignee: Tiense Suikerraffinaderij N.V.
    Inventors: Christian Victor Stevens, Karl Booten, Isabelle M.-A. Laquiere, Lucien Daenekindt