Patents by Inventor Christian Peter Lenges

Christian Peter Lenges 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).

  • Publication number: 20200181370
    Abstract: Compositions are disclosed herein comprising a rubber component and a polysaccharide, wherein the polysaccharide comprises i) poly alpha-1,3-glucan; ii) poly alpha-1,3-1,6-glucan; iii) water insoluble alpha-(1,3-glucan) polymer having 90% or greater ?-1,3-glycosidic linkages, less than 1% by weight of alpha-1,3,6-glycosidic branch points, and a number average degree of polymerization in the range of from 55 to 10,000; iv) dextran; v) a composition comprising poly alpha-1,3-glucan ester compounds as disclosed herein; or vi) water-insoluble cellulose having a weight-average degree of polymerization (DPw) of about 10 to about 1000 and a cellulose II crystal structure. The compositions can be used in articles such as a tire, a belt, a seal, footwear, a coating, a film, or an adhesive.
    Type: Application
    Filed: October 25, 2017
    Publication date: June 11, 2020
    Inventors: Natnael Behabtu, Jeffrey S. Downey, Tizazu H. Mekonnen, Christian Peter Lenges
  • Publication number: 20200062931
    Abstract: Molded articles are disclosed herein, the molded article comprising a polysaccharide, wherein the polysaccharide comprises i) poly alpha-1,3-glucan; ii) poly alpha-1,3-1,6-glucan; iii) a graft copolymer that comprises (A) a backbone comprising dextran with a weight-average molecular weight (Mw) of at least about 100000 Daltons, and (B) poly alpha-1,3-glucan side chains comprising at least about 95% alpha-1,3-glucosidic linkages; or iv) a composition comprising a poly alpha-1,3-glucan ester compound as disclosed herein. Optionally, the molded articles can further comprise a plasticizer and/or starch. The molded articles can be useful as a container, a handle, packaging, a tray, a bottle, a cup, a sheet, a disposable food packaging item, an automotive part, a casing for an electronic device, or a toy.
    Type: Application
    Filed: November 14, 2017
    Publication date: February 27, 2020
    Inventors: Natnael Behabtu, Kathleen Opper, Marinella Bettine Van Leeuwen, Geraldus Gerardus Johannes Schennink, Karin Molenveld, Christian Peter Lenges
  • Publication number: 20190345267
    Abstract: A process is disclosed herein comprising the step of contacting an esterifying agent and a polysaccharide in the presence of a solvent and suitable reaction conditions for a reaction time sufficient to form a product comprising a polysaccharide ester composition, wherein the polysaccharide ester composition comprises a polysaccharide ester having a degree of substitution of about 0.001 to about 3; wherein the esterifying agent comprises an acyl halide, a phosphoryl halide, a carboxylic acid anhydride, a haloformic acid ester, a carbonic acid ester, or a vinyl ester; and the ratio of esterifying agent to polysaccharide is in the range of about 0.001:1 to about 3:1 on a molar equivalent basis. In one embodiment, the polysaccharide comprises poly alpha-1,3-glucan.
    Type: Application
    Filed: November 20, 2017
    Publication date: November 14, 2019
    Inventors: Douglas J. Adelman, Natnael Behabtu, Alicia C. Briegel, Ross S. Johnson, Christian Peter Lenges, Kathleen Opper
  • Publication number: 20190345642
    Abstract: A process is disclosed herein comprising the steps: a) contacting an esterifying agent and a polysaccharide in the presence of a first solvent and suitable reaction conditions for a reaction time sufficient to form a product comprising a polysaccharide ester composition, the polysaccharide ester composition comprising a polysaccharide ester having a degree of substitution of about 0.001 to about 3; wherein the esterifying agent comprises an acyl halide, a phosphoryl halide, a carboxylic acid anhydride, a haloformic acid ester, a carbonic acid ester, or a vinyl ester; and the ratio of esterifying agent to polysaccharide is in the range of about 0.001:1 to about 3:1 on a molar equivalent basis; b) combining the product obtained in step a) with polyacrylonitrile; and c) spinning fibers.
    Type: Application
    Filed: November 20, 2017
    Publication date: November 14, 2019
    Inventors: Douglas J. Adelman, Natnael Behabtu, Alicia C. Briegel, Ross S. Johnson, Christian Peter Lenges, Kathleen Opper, Andreas Jürgen Wego, Christian Herbert
  • Publication number: 20190225737
    Abstract: Disclosed herein are polyurethane polymers comprising at least one polyisocyanate, a polysaccharide comprising: poly alpha-1,3-glucan; a poly alpha-1,3-glucan ester compound as disclosed herein; poly alpha-1,3-1,6-glucan; water-insoluble alpha-(1,3-glucan) polymer having 90% or greater alpha-1,3-glycosidic linkages, less than 1% by weight of alpha-1,3,6-glycosidic branch points, and a number average degree of polymerization in the range of from 55 to 10,000; dextran; or a poly alpha-1,3-glucan ether compound as disclosed herein; and optionally, at least one polyol. Also disclosed are polyurethane compositions comprising the polyurethane polymer and a solvent, as well as polyurethane foams, adhesives, coatings, films, and coated fibrous substrates comprising the polyurethane polymer.
    Type: Application
    Filed: July 20, 2017
    Publication date: July 25, 2019
    Inventors: Natnael Behabtu, Christian Peter Lenges, Tizazu H. Mekonnen, Kathleen Opper, Aisa Sendijarevic, Ibrahim Sendijarevic, Vahid Sendijarevic
  • Publication number: 20180155455
    Abstract: Poly alpha-1,3-glucan ester compounds are disclosed herein with a degree of substitution of about 0.001 to about 3.0. Also disclosed are methods of producing poly alpha-1,3-glucan ester compounds using cyclic organic anhydrides.
    Type: Application
    Filed: June 23, 2016
    Publication date: June 7, 2018
    Inventors: Jayme L. Paullin, Rakesh Nambiar, Christian Peter Lenges
  • Publication number: 20160286796
    Abstract: This invention relates to a method for controlling microorganisms comprising coating a surface with a removable, antimicrobial film-forming composition.
    Type: Application
    Filed: April 11, 2016
    Publication date: October 6, 2016
    Inventors: HELEN S M LU, CHRISTIAN HOFFMANN, CHRISTIAN PETER LENGES, BARRY STIEGLITZ, DONNA LYNN LEGER, JUDITH JOHANNA VAN GORP, SHAUN FRANCIS MALONE
  • Patent number: 8309301
    Abstract: Primers have been isolated that are diagnostic for the detection of the white spot syndrome virus (WSSV). The primers are based on a new portion of the WSSV genome and may be used in primer directed amplification or nucleic acid hybridization assay methods.
    Type: Grant
    Filed: September 21, 2011
    Date of Patent: November 13, 2012
    Assignee: E I du Pont de Nemours and Company
    Inventors: Richard C. Ebersole, Jianzhong Zhang, Christian Peter Lenges, Mario W. Chen
  • Patent number: 8293466
    Abstract: Primers have been isolated that are diagnostic for the detection of the white spot syndrome virus (WSSV). The primers are based on a new portion of the WSSV genome and may be used in primer directed amplification or nucleic acid hybridization assay methods.
    Type: Grant
    Filed: September 21, 2011
    Date of Patent: October 23, 2012
    Assignee: E I du Pont de Nemours and Company
    Inventors: Richard C. Ebersole, Jianzhong Zhang, Christian Peter Lenges, Mario W. Chen
  • Patent number: 8268395
    Abstract: The invention is a process useful for providing a treated support comprising a porous nanoweb coating wherein the treated support is characterized by a biofilm cell count of less than 50% that of an untreated porous support control. The process is useful for modifying porous materials, such as filter media and barrier fabrics to provide resistance to biofouling. The porous nanoweb coating is comprised of fibrous structures derived from gelation and drying of supramolecular assemblies of non-covalently bonded organogelators. Typical organogelators useful in the invention include those that assemble via hydrogen bonding and ?-stacking.
    Type: Grant
    Filed: April 6, 2006
    Date of Patent: September 18, 2012
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: John S. Chapman, Jiang Ding, Yu-Ling Hsiao, Christian Peter Lenges, Yanhui Niu, Stefan Reinartz, Cheryl Marie Stancik, Judith Johanna Van Gorp
  • Publication number: 20120045753
    Abstract: Primers have been isolated that are diagnostic for the detection of the white spot syndrome virus (WSSV). The primers are based on a new portion of the WSSV genome and may be used in primer directed amplification or nucleic acid hybridization assay methods.
    Type: Application
    Filed: September 21, 2011
    Publication date: February 23, 2012
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventors: RICHARD C. EBERSOLE, Jianzhong Zhang, Christian Peter Lenges, Mario W. Chen
  • Patent number: 8119829
    Abstract: The present invention is directed to compositions of specific carboxylic acid, fatty acid or oil derivatives containing nitrile groups and methods of their preparation. The preparation involves a hydrocyanation reaction. A method of hydrogenating the nitrile containing carboxylic acid acids obtained by above hydrocyanation to produce amine containing carboxylic acids is also disclosed in this invention.
    Type: Grant
    Filed: April 12, 2010
    Date of Patent: February 21, 2012
    Assignee: Invista North America S.A.R.L.
    Inventors: Alan Martin Allgeier, Christian Peter Lenges
  • Publication number: 20120034263
    Abstract: Primers have been isolated that are diagnostic for the detection of the white spot syndrome virus (WSSV). The primers are based on a new portion of the WSSV genome and may be used in primer directed amplification or nucleic acid hybridization assay methods.
    Type: Application
    Filed: September 21, 2011
    Publication date: February 9, 2012
    Applicant: E.I. DU PONT DE NEMOURS AND COMPANY
    Inventors: Richard C. Ebersole, Jianzhong Zhang, Christian Peter Lenges, Mario W. Chen
  • Patent number: 8057991
    Abstract: Primers have been isolated that are diagnostic for the detection of the white spot syndrome virus (WSSV). The primers are based on a new portion of the WSSV genome and may be used in primer directed amplification or nucleic acid hybridization assay methods.
    Type: Grant
    Filed: August 17, 2007
    Date of Patent: November 15, 2011
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Richard C. Ebersole, Jianzhong Zhang, Christian Peter Lenges, Mario W. Chen
  • Patent number: 8030513
    Abstract: The present invention provides for a rheology control agent that includes a following compound represented by the following formula: wherein A, B, C and D equal CH2, CHR, NH, or O, and A, B, C and D may be the same or different and at least one of A and B equals NH and at least one of C and D equals NH; and wherein R1, R2, and R3 may be the same or different and represent a linear, branched, hyper-branched, or dendritic ether, polyether or hydrocarbon based chain, optionally forming at least one carbon-based ring, being saturated or unsaturated and R2 represents linear or branched alkylenes, ethers, polyethers, or polyester linkages and at least one of R1, R2, and R3 comprises an ester group or an amide group which is branched off from the main chain; excluded from Formula (1) is a compound wherein R2 is CH2—CH2—CH2—CH2—CH(C(O)OCH3), A, B, C, and D are equal to NH and R1 and R3 are both equal to a linear octyl hydrocarbon chain; the rheology control agent is suitable for solvent-borne and water-borne coat
    Type: Grant
    Filed: April 13, 2010
    Date of Patent: October 4, 2011
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Christian Peter Lenges, Yanhui Niu, Yu-Ling Hsiao, Jiang Ding, Robert John Barsotti, Renee J. Kelly, Robert James Butera, Young H. Kim
  • Patent number: 7951540
    Abstract: Primers have been isolated that are diagnostic for the detection of Vibrio harveyi. The primers are based on a portion of the Vibrio harveyi LuxR gene and may be used in primer directed amplification or nucleic acid hybridization assay methods.
    Type: Grant
    Filed: February 18, 2010
    Date of Patent: May 31, 2011
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Richard C. Ebersole, Jianzhong Zhang, Mario W. Chen, Christian Peter Lenges
  • Publication number: 20110092729
    Abstract: The present invention is directed to compositions of specific carboxylic acid, fatty acid or oil derivatives containing nitrile groups and methods of their preparation. The preparation involves a hydrocyanation reaction. A method of hydrogenating the nitrile containing carboxylic acid acids obtained by above hydrocyanation to produce amine containing carboxylic acids is also disclosed in this invention.
    Type: Application
    Filed: April 12, 2010
    Publication date: April 21, 2011
    Applicant: INVISTA NORTH AMERICA S.A.R.L.
    Inventors: Alan Martin Allgeier, Christian Peter Lenges
  • Patent number: 7858310
    Abstract: Primers have been isolated that are diagnostic for the detection of the taura syndrome virus (TSV). The primers are based on a new portion of the TSV genome and may be used in primer directed amplification or nucleic acid hybridization assay methods.
    Type: Grant
    Filed: August 17, 2007
    Date of Patent: December 28, 2010
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Richard C. Ebersole, Jianzhong Zhang, Christian Peter Lenges, Mario W. Chen
  • Publication number: 20100204376
    Abstract: The present invention provides for a rheology control agent that includes a following compound represented by the following formula: wherein A, B, C and D equal CH2, CHR, NH, or O, and A, B, C and D may be the same or different and at least one of A and B equals NH and at least one of C and D equals NH; and wherein R1, R2, and R3 may be the same or different and represent a linear, branched, hyper-branched, or dendritic ether, polyether or hydrocarbon based chain, optionally forming at least one carbon-based ring, being saturated or unsaturated and R2 represents linear or branched alkylenes, ethers, polyethers, or polyester linkages and at least one of R1, R2, and R3 comprises an ester group or an amide group which is branched off from the main chain; excluded from Formula (1) is a compound wherein R2 is CH2—CH2—CH2—CH2—CH(C(O)OCH3), A, B, C, and D are equal to NH and R1 and R3 are both equal to a linear octyl hydrocarbon chain; the rheology control agent is suitable for solvent-borne and water-borne coat
    Type: Application
    Filed: April 13, 2010
    Publication date: August 12, 2010
    Inventors: Christian Peter Lenges, Yanhui Niu, Yu-Ling Hsiao, Jiang Ding, Robert John Barsotti, Renee J. Kelly, Robert James Butera, Young H. Kim
  • Publication number: 20100167303
    Abstract: Primers have been isolated that are diagnostic for the detection of Vibrio harveyi. The primers are based on a portion of the Vibrio harveyi LuxR gene and may be used in primer directed amplification or nucleic acid hybridization assay methods.
    Type: Application
    Filed: February 18, 2010
    Publication date: July 1, 2010
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventors: RICHARD C. EBERSOLE, Jianzhong Zhang, Mario W. Chen, Christian Peter Lenges