Patents by Inventor Christiaan Nijst

Christiaan Nijst 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: 11458230
    Abstract: The present inventions in various aspects provide elastic biodegradable polymers. In various embodiments, the polymers are formed by the reaction of a multifunctional alcohol or ether and a difunctional or higher order acid to form a pre-polymer, which is cross-linked to form the elastic biodegradable polymer. In preferred embodiments, the cross-linking is performed by functionalization of one or more OR groups on the pre-polymer backbone with vinyl, followed by photopolymerization to form the elastic biodegradable polymer composition or material. Preferably, acrylate is used to add one or more vinyls to the backbone of the pre-polymer to form an acrylated pre-polymer. In various embodiments, acrylated pre-polymers are co-polymerized with one or more acrylated co-polymers.
    Type: Grant
    Filed: November 13, 2020
    Date of Patent: October 4, 2022
    Assignee: MASSACHUSETTS INSTITUTE OF TECHNOLOGY
    Inventors: Christopher J. Bettinger, Joost P. Bruggeman, Lino Da Silva Ferreira, Jeffrey M. Karp, Robert S. Langer, Christiaan Nijst, Andreas Zumbuehl, Jason Burdick, Sonia J. Kim
  • Publication number: 20210128794
    Abstract: The present inventions in various aspects provide elastic biodegradable polymers. In various embodiments, the polymers are formed by the reaction of a multifunctional alcohol or ether and a difunctional or higher order acid to form a pre-polymer, which is cross-linked to form the elastic biodegradable polymer. In preferred embodiments, the cross-linking is performed by functionalization of one or more OR groups on the pre-polymer backbone with vinyl, followed by photopolymerization to form the elastic biodegradable polymer composition or material. Preferably, acrylate is used to add one or more vinyls to the backbone of the pre-polymer to form an acrylated pre-polymer. In various embodiments, acrylated pre-polymers are co-polymerized with one or more acrylated co-polymers.
    Type: Application
    Filed: November 13, 2020
    Publication date: May 6, 2021
    Inventors: Christopher J. Bettinger, Joost P. Bruggeman, Lino da Silva Ferreira, Jeffrey M. Karp, Robert S. Langer, Christiaan Nijst, Andreas Zumbuehl, Jason Burdick, Sonia J. Kim
  • Patent number: 10864303
    Abstract: The present inventions in various aspects provide elastic biodegradable polymers. In various embodiments, the polymers are formed by the reaction of a multifunctional alcohol or ether and a difunctional or higher order acid to form a pre-polymer, which is cross-linked to form the elastic biodegradable polymer. In preferred embodiments, the cross-linking is performed by functionalization of one or more OR groups on the pre-polymer backbone with vinyl, followed by photopolymerization to form the elastic biodegradable polymer composition or material. Preferably, acrylate is used to add one or more vinyls to the backbone of the pre-polymer to form an acrylated pre-polymer. In various embodiments, acrylated pre-polymers are co-polymerized with one or more acrylated co-polymers.
    Type: Grant
    Filed: November 30, 2018
    Date of Patent: December 15, 2020
    Assignee: MASSACHUSETTS INSTITUTE OF TECHNOLOGY
    Inventors: Christopher J. Bettinger, Joost P. Bruggeman, Lino da Silva Ferreira, Jeffrey M. Karp, Robert S. Langer, Christiaan Nijst, Andreas Zumbuehl, Jason Burdick, Sonia J. Kim
  • Publication number: 20190091377
    Abstract: The present inventions in various aspects provide elastic biodegradable polymers. In various embodiments, the polymers are formed by the reaction of a multifunctional alcohol or ether and a difunctional or higher order acid to form a pre-polymer, which is cross-linked to form the elastic biodegradable polymer. In preferred embodiments, the cross-linking is performed by functionalization of one or more OR groups on the pre-polymer backbone with vinyl, followed by photopolymerization to form the elastic biodegradable polymer composition or material. Preferably, acrylate is used to add one or more vinyls to the backbone of the pre-polymer to form an acrylated pre-polymer. In various embodiments, acrylated pre-polymers are co-polymerized with one or more acrylated co-polymers.
    Type: Application
    Filed: November 30, 2018
    Publication date: March 28, 2019
    Inventors: Christopher J. Bettinger, Joost P. Bruggeman, Lino da Silva Ferreira, Jeffrey M. Karp, Robert S. Langer, Christiaan Nijst, Andreas Zumbuehl, Jason Burdick, Sonia J. Kim
  • Patent number: 10179195
    Abstract: The present inventions in various aspects provide elastic biodegradable polymers. In various embodiments, the polymers are formed by the reaction of a multifunctional alcohol or ether and a difunctional or higher order acid to form a pre-polymer, which is cross-linked to form the elastic biodegradable polymer. In preferred embodiments, the cross-linking is performed by functionalization of one or more OR groups on the pre-polymer backbone with vinyl, followed by photopolymerization to form the elastic biodegradable polymer composition or material. Preferably, acrylate is used to add one or more vinyls to the backbone of the pre-polymer to form an acrylated pre-polymer. In various embodiments, acrylated pre-polymers are co-polymerized with one or more acrylated co-polymers.
    Type: Grant
    Filed: February 17, 2014
    Date of Patent: January 15, 2019
    Assignee: Massachusetts Institue of Technology
    Inventors: Christopher J. Bettinger, Joost P. Bruggeman, Lino da Silva Ferreira, Jeffrey M. Karp, Robert S. Langer, Christiaan Nijst, Andreas Zumbuehl, Jason Burdick, Sonia J. Kim
  • Patent number: 8912304
    Abstract: The present invention provides inventive polyol-based polymers, materials, pharmaceutical compositions, and methods of making and using the inventive polymers and materials. In certain aspects of the invention, an inventive polymer corresponds to a polymer depicted below. Exemplary inventive polymers includes those prepared using polyol units (e.g., xylitol, mannitol, sorbitol, or maltitol) condensed with polycarboxylic acid units (e.g., citric acid, glutaric acid, or sebacic acid). The inventive polymers may be further derivatized or modified. For example, the polymer may be made photocrosslinkable by adding methacrylate moieties to the polymer.
    Type: Grant
    Filed: May 16, 2008
    Date of Patent: December 16, 2014
    Assignee: Massachusetts Institute of Technology
    Inventors: Joost P. Bruggeman, Christiaan Nijst, Daniel S. Kohane, Robert S. Langer
  • Publication number: 20140186312
    Abstract: The present inventions in various aspects provide elastic biodegradable polymers. In various embodiments, the polymers are formed by the reaction of a multifunctional alcohol or ether and a difunctional or higher order acid to form a pre-polymer, which is cross-linked to form the elastic biodegradable polymer. In preferred embodiments, the cross-linking is performed by functionalization of one or more OR groups on the pre-polymer backbone with vinyl, followed by photopolymerization to form the elastic biodegradable polymer composition or material. Preferably, acrylate is used to add one or more vinyls to the backbone of the pre-polymer to form an acrylated pre-polymer. In various embodiments, acrylated pre-polymers are co-polymerized with one or more acrylated co-polymers.
    Type: Application
    Filed: February 17, 2014
    Publication date: July 3, 2014
    Applicant: Massachusetts Institute of Technology
    Inventors: Christopher J. Bettinger, Joost P. Bruggeman, Lino da Silva Ferreira, Jeffrey M. Karp, Robert S. Langer, Christiaan Nijst, Andreas Zumbuehl, Jason Burdick, Sonia J. Kim
  • Patent number: 8691203
    Abstract: The present inventions in various aspects provide elastic biodegradable polymers. In various embodiments, the polymers are formed by the reaction of a multifunctional alcohol or ether and a difunctional or higher order acid to form a pre-polymer, which is cross-linked to form the elastic biodegradable polymer. In preferred embodiments, the cross-linking is performed by functionalization of one or more OR groups on the pre-polymer backbone with vinyl, followed by photopolymerization to form the elastic biodegradable polymer composition or material. Preferably, acrylate is used to add one or more vinyls to the backbone of the pre-polymer to form an acrylated pre-polymer. In various embodiments, acrylated pre-polymers are co-polymerized with one or more acrylated co-polymers.
    Type: Grant
    Filed: March 23, 2012
    Date of Patent: April 8, 2014
    Assignee: Massachusetts Institute of Technology
    Inventors: Christopher J. Bettinger, Joost P. Bruggeman, Lino Da Silva Ferreira, Jeffrey M. Karp, Robert S. Langer, Christiaan Nijst, Andreas Zumbuehl, Jason Burdick, Sonia J. Kim
  • Publication number: 20120269761
    Abstract: The present inventions in various aspects provide elastic biodegradable polymers. In various embodiments, the polymers are formed by the reaction of a multifunctional alcohol or ether and a difunctional or higher order acid to form a pre-polymer, which is cross-linked to form the elastic biodegradable polymer. In preferred embodiments, the cross-linking is performed by functionalization of one or more OR groups on the pre-polymer backbone with vinyl, followed by photopolymerization to form the elastic biodegradable polymer composition or material. Preferably, acrylate is used to add one or more vinyls to the backbone of the pre-polymer to form an acrylated pre-polymer. In various embodiments, acrylated pre-polymers are co-polymerized with one or more acrylated co-polymers.
    Type: Application
    Filed: March 23, 2012
    Publication date: October 25, 2012
    Inventors: Christopher J. Bettinger, Joost P. Bruggeman, Lino Da Silva Ferreira, Jeffrey M. Karp, Robert S. Langer, Christiaan Nijst, Andreas Zumbuehl, Jason Burdick, Sonia J. Kim
  • Patent number: 8143042
    Abstract: The present inventions in various aspects provide elastic biodegradable polymers. In various embodiments, the polymers are formed by the reaction of a multifunctional alcohol or ether and a difunctional or higher order acid to form a pre-polymer, which is cross-linked to form the elastic biodegradable polymer. In preferred embodiments, the cross-linking is performed by functionalization of one or more OR groups on the pre-polymer backbone with vinyl, followed by photopolymerization to form the elastic biodegradable polymer composition or material. Preferably, acrylate is used to add one or more vinyls to the backbone of the pre-polymer to form an acrylated pre-polymer. In various embodiments, acrylated pre-polymers are co-polymerized with one or more acrylated co-polymers.
    Type: Grant
    Filed: January 12, 2007
    Date of Patent: March 27, 2012
    Assignee: Massachusetts Institute of Technology
    Inventors: Christopher J. Bettinger, Joost P. Bruggeman, Lino Da Silva Ferreira, Jeffrey M. Karp, Robert S. Langer, Christiaan Nijst, Andreas Zumbuehl, Jason Burdick, Sonia J. Kim
  • Publication number: 20110297885
    Abstract: The invention is directed to a process to prepare a fuel or an intermediate to a fuel from residues as obtained in a palm oil process wherein shredded agricultural residue having a water content of between 40 and 75 wt % water is dried to obtain a dried agricultural residue having a water content of between 5 and 40 wt % and then is compacted into pellets, cubes, or small briquettes having a two dimensional size of between 5 and 1000 mm and a thickness of between 5 and 300 mm and a density of between 200 and 1200 kg/m3.
    Type: Application
    Filed: February 4, 2010
    Publication date: December 8, 2011
    Inventors: Harold Boerrigter, Christiaan Nijst, Sander Van Paasen, Robertus Hendrikus Venderbosch
  • Publication number: 20110008277
    Abstract: The present invention provides inventive polyol-based polymers, materials, pharmaceutical compositions, and methods of making and using the inventive polymers and materials. In certain aspects of the invention, an inventive polymer corresponds to a polymer depicted below. Exemplary inventive polymers includes those prepared using polyol units (e.g., xylitol, mannitol, sorbitol, or maltitol) condensed with polycarboxylic acid units (e.g., citric acid, glutaric acid, or sebacic acid). The inventive polymers may be further derivatized or modified. For example, the polymer may be made photocrosslinkable by adding methacrylate moieties to the polymer.
    Type: Application
    Filed: May 16, 2008
    Publication date: January 13, 2011
    Applicants: MASSACHUSETTS INSTITUTE OF TECHNOLOGY, THE GENERAL HOSPITAL CORPORATION
    Inventors: Joost P. Bruggeman, Christiaan Nijst, Daniel S. Kohane, Robert S. Langer
  • Publication number: 20100184873
    Abstract: The invention pertains to a multi-stage process for the production of hydrocarbons from syngas comprising hydrogen and carbon monoxide, which comprises the steps of: a) providing a fresh syngas feed to a first stage Fischer-Tropsch reactor and allowing CO and hydrogen to convert into hydrocarbon products at a temperature in the range from 125 to 400° C. and a pressure in the range from 5 to 150 bar absolute, and a gaseous hourly space velocity in the range from 500 to 10000 Nl/l/h; b) feeding the effluent from the first stage reactor to a separation unit; c) removing a gasous effluent stream comprising hydrogen and CO from the separation unit; d) removing one or more other streams comprising hydrocarbon and/or water from the separation unit; e) conveying a first portion of the gaseous effluent stream to a second stage Fischer-Tropsch reactor and allowing CO and hydrogen to convert into hydrocarbon products in the second stage Fischer-Tropsch reactor at a temperature in the range from 125 to 400° C.
    Type: Application
    Filed: December 17, 2009
    Publication date: July 22, 2010
    Inventors: Maarten Bracht, Maarten Hesselink, Christiaan Nijst, Thomas Joris Remans
  • Publication number: 20090047256
    Abstract: The present inventions in various aspects provide elastic biodegradable polymers. In various embodiments, the polymers are formed by the reaction of a multifunctional alcohol or ether and a difunctional or higher order acid to form a pre-polymer, which is cross-linked to form the elastic biodegradable polymer. In preferred embodiments, the cross-linking is performed by functionalization of one or more OR groups on the pre-polymer backbone with vinyl, followed by photopolymerization to form the elastic biodegradable polymer composition or material. Preferably, acrylate is used to add one or more vinyls to the backbone of the pre-polymer to form an acrylated pre-polymer. In various embodiments, acrylated pre-polymers are co-polymerized with one or more acrylated co-polymers.
    Type: Application
    Filed: January 12, 2007
    Publication date: February 19, 2009
    Applicant: MASSACHUSETTS INSTITUTE OF TECHNOLOGY
    Inventors: Christopher J. Bettinger, Joost P. Bruggeman, Lino Da Silva Ferreira, Jeffrey M. Karp, Robert S. Langer, Christiaan Nijst, Andreas Zumbuehl, Jason Burdick, Sonia J. Kim
  • Publication number: 20090011486
    Abstract: The present inventions in various aspects provide elastic polymers compositions for encapsulation of cells. In various embodiments, the polymers are formed by the reaction of a multifunctional alcohol or ether and a difunctional or higher order acid to form a pre-polymer, which is cross-linked in the presence of glycerol and a population of cells to form elastic porous polymer scaffolds suitable for cell encapsulation and/or proliferation.
    Type: Application
    Filed: March 5, 2007
    Publication date: January 8, 2009
    Applicant: MASSACHUSETTS INSTITUTE OF TECHNOLOGY
    Inventors: Christopher J. Bettinger, Joost P. Bruggeman, Lino Da Silva Ferreira, Jeffrey M. Karp, Robert S. Langer, Christiaan Nijst, Andreas Zumbuehl, Jason Burdick, Sonia J. Kim