Patents by Inventor Xuwei Jiang

Xuwei Jiang 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: 9255176
    Abstract: Polymer surface modification method comprising the steps of first forming a surface of primary reactive end groups tethered to the polymer chain ends during fabrication of an article, and then modifying the reactive surface with bio-active molecules, hydrophilic and hydrophobic monomers, oligomers, or polymers to attain specific surface properties. Alternatively, a multifunctional coupling agent can be used to couple the primary reactive group to a second reactive group capable of reacting with a functional group associated with bio-active molecules, hydrophilic and hydrophobic monomers, oligomers, and polymers to attain specific surface properties. The invention involves bringing reactive endgroups to the surface with surface active spacer attached to the polymer chain end. The surface active spacer allows the migration and enrichment of reactive end groups to the surface during fabrication.
    Type: Grant
    Filed: August 8, 2014
    Date of Patent: February 9, 2016
    Assignee: DSM IP ASSETS B.V.
    Inventors: Shanger Wang, Robert S. Ward, Yuan Tian, Xuwei Jiang, Keith McCrea, Scott Curtin
  • Patent number: 9181401
    Abstract: Amphiphilic biomimetic phosphorylcholine-containing silicone compounds for use in both topical and internal applications as components in biomedical devices. The silicone compounds, which include zwitterionic phosphorylcholine groups, may be polymerizable or non-polymerizable. Specific examples of applications include use as active functional components in ophthalmic lenses, ophthalmic lens care solutions, liquid bandages, wound dressings, and lubricious and anti-thrombogenic coatings.
    Type: Grant
    Filed: June 7, 2010
    Date of Patent: November 10, 2015
    Assignee: DSM IP ASSETS B.V.
    Inventors: James Parakka, Ananth V. Iyer, Anfeng Wang, Xuwei Jiang, Yuan Tian, Robert Ward
  • Publication number: 20150151021
    Abstract: Soft hydrophobic acrylic materials with improved resistance to fluid diffusion and suitable mechanical properties that allow deformation upon application of force are disclosed. The acrylic materials are particularly suitable for use in fluid-based accommodating intraocular lenses and comprises combination of a perfluoro-substituted alkyl (meth)acrylate and an alkyl (meth)acrylate, and a cross-linking agent.
    Type: Application
    Filed: December 2, 2014
    Publication date: June 4, 2015
    Inventors: Xuwei Jiang, Douglas Schlueter
  • Publication number: 20150151022
    Abstract: High refractive index acrylic device materials with reduced glistenings are disclosed. The device materials are particularly suitable for use as ophthalmic or otorhhinolaryngological device materials and comprises a poly(phenyl ether)-containing monomer and/or a poly(phenyl ether)-containing cross-linking agent.
    Type: Application
    Filed: December 2, 2014
    Publication date: June 4, 2015
    Inventors: Xuwei Jiang, Douglas Schlueter, Walter Laredo
  • Patent number: 8969429
    Abstract: Disclosed are low-tack, hydrophobic, high refractive index, acrylic materials. These materials, especially useful as intraocular lens materials, contain one or more aryl acrylic hydrophobic monomers as principal device-forming monomers, a tack-reducing block copolymer additive and a glistening-reducing additive. In addition to their use as intraocular lens materials, the present materials are also suitable for use in other implantable ophthalmic devices.
    Type: Grant
    Filed: February 7, 2012
    Date of Patent: March 3, 2015
    Assignee: Novartis AG
    Inventors: Walter R. Laredo, Xuwei Jiang
  • Patent number: 8927682
    Abstract: Poly(glycolide) polymers are disclosed. The polymers generally include a polymerized alkynyl-substituted glycolide having a polymer backbone with one or more alkynyl groups appended thereto. The alkynyl groups provide reactive sites for further functionalization of the polymer, for example by reaction with azide derivatives (e.g., azide-substituted organic compounds). Alkynyl and azide groups react via the “click” chemistry mechanism to form functional groups covalently bonded to the polymer via a triazole link. The polymers are biodegradable and can be used to deliver drugs or other therapeutic substances (e.g., large biomolecules such as single strand RNA) at targeted locations in a patient's body and/or at controlled release rates.
    Type: Grant
    Filed: August 25, 2008
    Date of Patent: January 6, 2015
    Assignee: Board of Trustees of Michigan State University
    Inventors: Gregory L. Baker, Milton R. Smith, III, Xuwei Jiang, Erin B. Vogel
  • Publication number: 20140350184
    Abstract: Polymer surface modification method comprising the steps of first forming a surface of primary reactive end groups tethered to the polymer chain ends during fabrication of an article, and then modifying the reactive surface with bio-active molecules, hydrophilic and hydrophobic monomers, oligomers, or polymers to attain specific surface properties. Alternatively, a multifunctional coupling agent can be used to couple the primary reactive group to a second reactive group capable of reacting with a functional group associated with bio-active molecules, hydrophilic and hydrophobic monomers, oligomers, and polymers to attain specific surface properties. The invention involves bringing reactive endgroups to the surface with surface active spacer attached to the polymer chain end. The surface active spacer allows the migration and enrichment of reactive end groups to the surface during fabrication.
    Type: Application
    Filed: August 8, 2014
    Publication date: November 27, 2014
    Inventors: Shanger WANG, Robert S. WARD, Yuan TIAN, Xuwei JIANG, Keith MCCREA, Scott CURTIN
  • Publication number: 20140135408
    Abstract: Silicone containing reactive monomers with hydrophilic end-groups of formula I useful in the manufacture of biocompatible medical devices are disclosed, wherein R1 is H or CH3, a is 0 or 1, p is an integer from 1 to 6, q is an integer from 1 to 3 and for each q, the end groups R51, R52, R53 are independently an alkyl, alkyl ether, trimethylsiloxy group, or a substituted or non-substituted aromatic group and at least one of them has a hydrophilic group attached, preferably to the terminal end of R51, R52, R53, X is O or NR54, where R54 is H or a monovalent alkyl group with 1 to 4 carbons, n is an integer from 1 to 100, R2 and R3 are independently an alkyl, alkyl ether, or a substituted or non-substituted aromatic group, preferred R2 and R3 include methyl, ethyl, and phenyl, L is a divalent linker comprising substituted and unsubstituted alkylene groups having 1-14 carbon atoms, which may be straight or branched, substituted and unsubstituted alkoxy groups having 2-12 carbons, polyethers, oxazolines, and substi
    Type: Application
    Filed: February 1, 2012
    Publication date: May 15, 2014
    Applicant: DSM IP ASSETS B.V.
    Inventors: Shanger Wang, Xuwei Jiang, Yuan Tian
  • Publication number: 20120202916
    Abstract: Disclosed are low-tack, hydrophobic, high refractive index, acrylic materials. These materials, especially useful as intraocular lens materials, contain one or more aryl acrylic hydrophobic monomers as principal device-forming monomers, a tack-reducing block copolymer additive and a glistening-reducing additive. In addition to their use as intraocular lens materials, the present materials are also suitable for use in other implantable ophthalmic devices.
    Type: Application
    Filed: February 7, 2012
    Publication date: August 9, 2012
    Applicant: NOVARTIS AG
    Inventors: Walter R. Laredo, Xuwei Jiang
  • Publication number: 20120136087
    Abstract: Amphiphilic biomimetic phosphorylcholine-containing silicone compounds for use in both topical and internal applications as components in biomedical devices. The silicone compounds, which include zwitterionic phosphorylcholine groups, may be polymerizable or non-polymerizable. Specific examples of applications include use as active functional components in ophthalmic lenses, ophthalmic lens care solutions, liquid bandages, wound dressings, and lubricious and anti-thrombogenic coatings.
    Type: Application
    Filed: June 7, 2010
    Publication date: May 31, 2012
    Applicant: DSM IP Assets B.V.
    Inventors: James Parakka, Ananth V. Iyer, Anfeng Wang, Xuwei Jiang, Yuan Tian, Robert Ward
  • Publication number: 20110293522
    Abstract: Polymer surface modification method comprising the steps of first forming a surface of primary reactive end groups tethered to the polymer chain ends during fabrication of an article, and then modifying the reactive surface with bio-active molecules, hydrophilic and hydrophobic monomers, oligomers, or polymers to attain specific surface properties. Alternatively, a multifunctional coupling agent can be used to couple the primary reactive group to a second reactive group capable of reacting with a functional group associated with bio-active molecules, hydrophilic and hydrophobic monomers, oligomers, and polymers to attain specific surface properties. The invention involves bringing reactive endgroups to the surface with surface active spacer attached to the polymer chain end. The surface active spacer allows the migration and enrichment of reactive end groups to the surface during fabrication.
    Type: Application
    Filed: November 16, 2009
    Publication date: December 1, 2011
    Applicant: DSM IP ASSETS B.V.
    Inventors: Shanger Wang, Robert S. Ward, Yuan Tian, Xuwei Jiang, Keith Mccrea, Scott Curtin
  • Publication number: 20090054619
    Abstract: Poly(glycolide) polymers are disclosed. The polymers generally include a polymerized alkynyl-substituted glycolide having a polymer backbone with one or more alkynyl groups appended thereto. The alkynyl groups provide reactive sites for further functionalization of the polymer, for example by reaction with azide derivatives (e.g., azide-substituted organic compounds). Alkynyl and azide groups react via the “click” chemistry mechanism to form functional groups covalently bonded to the polymer via a triazole link. The polymers are biodegradable and can be used to deliver drugs or other therapeutic substances (e.g., large biomolecules such as single strand RNA) at targeted locations in a patient's body and/or at controlled release rates.
    Type: Application
    Filed: August 25, 2008
    Publication date: February 26, 2009
    Applicant: Board of Trustees of Michigan State University
    Inventors: Gregory L. Baker, Milton R. Smith, III, Xuwei Jiang, Erin B. Vogel