Patents by Inventor Pingren He

Pingren He 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: 9980977
    Abstract: The present application provides compositions comprising hyaluronic acid having low levels of functional group modification, mixtures formed by controlled reaction of such lightly modified hyaluronic acid with suitable difunctional or multi-functional crosslinkers, and hydrogel precursor compositions and the resulting hydrogels. The compositions are lightly cross-linked and possess low pro-inflammatory properties when injected in vivo, and can be used as, for example, medical devices, biomedical adhesives and sealants, and for localized delivery of bioactive agents, among other uses.
    Type: Grant
    Filed: September 13, 2016
    Date of Patent: May 29, 2018
    Assignee: Carbylan Therapeutics, Inc.
    Inventors: David M. Gravett, George Y. Daniloff, Pingren He
  • Publication number: 20170239358
    Abstract: The present application provides rapid-gelling, sprayable hyaluronic-acid based compositions, kits, related methods, precursor formulations, and uses thereof.
    Type: Application
    Filed: September 27, 2016
    Publication date: August 24, 2017
    Inventors: David M. Gravett, George Y. Daniloff, Pingren He
  • Publication number: 20170224708
    Abstract: The present application provides compositions comprising hyaluronic acid having low levels of functional group modification, mixtures formed by controlled reaction of such lightly modified hyaluronic acid with suitable difunctional or multi-functional crosslinkers, and hydrogel precursor compositions and the resulting hydrogels. The compositions are lightly cross-linked and possess low pro-inflammatory properties when injected in vivo, and can be used as, for example, medical devices, biomedical adhesives and sealants, and for localized delivery of bioactive agents, among other uses.
    Type: Application
    Filed: September 13, 2016
    Publication date: August 10, 2017
    Inventors: David M. Gravett, George Y. Daniloff, Pingren He
  • Patent number: 9492383
    Abstract: The present application provides rapid-gelling, sprayable hyaluronic-acid based compositions, kits, related methods, precursor formulations, and uses thereof.
    Type: Grant
    Filed: April 18, 2012
    Date of Patent: November 15, 2016
    Assignee: Carbylan Therapeutics, Inc.
    Inventors: David M. Gravett, George Y. Daniloff, Pingren He
  • Patent number: 9446136
    Abstract: The present application provides compositions comprising hyaluronic acid having low levels of functional group modification, mixtures formed by controlled reaction of such lightly modified hyaluronic acid with suitable difunctional or multi-functional crosslinkers, and hydrogel precursor compositions and the resulting hydrogels. The compositions are lightly cross-linked and possess low pro-inflammatory properties when injected in vivo, and can be used as, for example, medical devices, biomedical adhesives and sealants, and for localized delivery of bioactive agents, among other uses.
    Type: Grant
    Filed: October 30, 2015
    Date of Patent: September 20, 2016
    Assignee: Carbylan Therapeutics, Inc.
    Inventors: David M. Gravett, George Y. Daniloff, Pingren He
  • Publication number: 20160193342
    Abstract: The present application provides compositions comprising hyaluronic acid having low levels of functional group modification, mixtures formed by controlled reaction of such lightly modified hyaluronic acid with suitable difunctional or multi-functional crosslinkers, and hydrogel precursor compositions and the resulting hydrogels. The compositions are lightly cross-linked and possess low pro-inflammatory properties when injected in vivo, and can be used as, for example, medical devices, biomedical adhesives and sealants, and for localized delivery of bioactive agents, among other uses.
    Type: Application
    Filed: October 30, 2015
    Publication date: July 7, 2016
    Inventors: David M. Gravett, George Y. Daniloff, Pingren He
  • Publication number: 20150352142
    Abstract: Provided herein are hyaluronic-acid based compositions comprising a hyaluronic acid-based polymer and a corticosteroid in the presence of a stabilizing amount of one or more stabilizing additives and related methods. The resulting compositions substantially retain their viscoelastic and related rheolotical properties under conditions of storage, processing, and use.
    Type: Application
    Filed: January 10, 2014
    Publication date: December 10, 2015
    Inventors: David M. Gravett, Pingren He
  • Patent number: 9192678
    Abstract: The present application provides compositions comprising hyaluronic acid having low levels of functional group modification, mixtures formed by controlled reaction of such lightly modified hyaluronic acid with suitable difunctional or multi-functional crosslinkers, and hydrogel precursor compositions and the resulting hydrogels. The compositions are lightly cross-linked and possess low pro-inflammatory properties when injected in vivo, and can be used as, for example, medical devices, biomedical adhesives and sealants, and for localized delivery of bioactive agents, among other uses.
    Type: Grant
    Filed: July 16, 2014
    Date of Patent: November 24, 2015
    Assignee: Carbylan Therapeutics, Inc.
    Inventors: David M. Gravett, George Y. Daniloff, Pingren He
  • Patent number: 9011894
    Abstract: The present application provides sterile hyaluronic polymer compositions than are useful, e.g., as medical devices, biomedical adhesives, and sealants. Generally, provided are sterile dry compositions comprising a thiol-derivatized hyaluronic acid and one or more stabilizing excipients. Also provided are related kits and methods. The compositions described herein are particularly robust to sterilizing irradiation, and substantially maintain both their molecular weight and gelation parameters such as gelation time after sterilization, such that such sterile compositions are capable of hydrogel formation.
    Type: Grant
    Filed: June 30, 2008
    Date of Patent: April 21, 2015
    Assignee: Carbylan Therapeutics, Inc.
    Inventors: George Y. Daniloff, Robert C. Spiro, David M. Gravett, Patrick J. Hillas, Pingren He
  • Publication number: 20140328926
    Abstract: The present application provides compositions comprising hyaluronic acid having low levels of functional group modification, mixtures formed by controlled reaction of such lightly modified hyaluronic acid with suitable difunctional or multi-functional crosslinkers, and hydrogel precursor compositions and the resulting hydrogels. The compositions are lightly cross-linked and possess low pro-inflammatory properties when injected in vivo, and can be used as, for example, medical devices, biomedical adhesives and sealants, and for localized delivery of bioactive agents, among other uses.
    Type: Application
    Filed: July 16, 2014
    Publication date: November 6, 2014
    Inventors: David M. Gravett, George Y. Daniloff, Pingren He
  • Publication number: 20140221307
    Abstract: The present application provides rapid-gelling, sprayable hyaluronic-acid based compositions, kits, related methods, precursor formulations, and uses thereof.
    Type: Application
    Filed: April 18, 2012
    Publication date: August 7, 2014
    Inventors: David M Gravett, George Y. Daniloff, Pingren He
  • Patent number: 8790702
    Abstract: The present application provides compositions comprising hyaluronic acid having low levels of functional group modification, mixtures formed by controlled reaction of such lightly modified hyaluronic acid with suitable difunctional or multi-functional crosslinkers, and hydrogel precursor compositions and the resulting hydrogels. The compositions are lightly cross-linked and possess low pro-inflammatory properties when injected in vivo, and can be used as, for example, medical devices, biomedical adhesives and sealants, and for localized delivery of bioactive agents, among other uses.
    Type: Grant
    Filed: July 23, 2010
    Date of Patent: July 29, 2014
    Assignee: Carbylan Therapeutics, Inc.
    Inventors: David M. Gravett, George Y. Daniloff, Pingren He
  • Publication number: 20120128741
    Abstract: The present application provides compositions comprising hyaluronic acid having low levels of functional group modification, mixtures formed by controlled reaction of such lightly modified hyaluronic acid with suitable difunctional or multi-functional crosslinkers, and hydrogel precursor compositions and the resulting hydrogels. The compositions are lightly cross-linked and possess low pro-inflammatory properties when injected in vivo, and can be used as, for example, medical devices, biomedical adhesives and sealants, and for localized delivery of bioactive agents, among other uses.
    Type: Application
    Filed: July 23, 2010
    Publication date: May 24, 2012
    Applicant: Carbylan Biosurgery, Inc.
    Inventors: David M. Gravett, George Y. Daniloff, Pingren He
  • Patent number: 7829118
    Abstract: The present application provides compositions comprising hyaluronic acid having low levels of functional group modification, mixtures formed by controlled reaction of such lightly modified hyaluronic acid with suitable difunctional or multi-functional crosslinkers, and hydrogel precursor compositions and the resulting hydrogels. The compositions are lightly cross-linked and possess low pro-inflammatory properties when injected in vivo, and can be used as, for example, medical devices, biomedical adhesives and sealants, and for localized delivery of bioactive agents, among other uses.
    Type: Grant
    Filed: July 23, 2010
    Date of Patent: November 9, 2010
    Assignee: Carbylan Biosurgery, Inc.
    Inventors: David M. Gravett, George Y. Daniloff, Pingren He
  • Publication number: 20090017091
    Abstract: The present application provides sterile hyaluronic polymer compositions than are useful, e.g., as medical devices, biomedical adhesives, and sealants. Generally, provided are sterile dry compositions comprising a thiol-derivatized hyaluronic acid and one or more stabilizing excipients. Also provided are related kits and methods. The compositions described herein are particularly robust to sterilizing irradiation, and substantially maintain both their molecular weight and gelation parameters such as gelation time after sterilization, such that such sterile compositions are capable of hydrogel formation.
    Type: Application
    Filed: June 30, 2008
    Publication date: January 15, 2009
    Inventors: George Y. Daniloff, Robert C. Spiro, David M. Gravett, Patrick J. Hillas, Pingren He