Patents by Inventor Mark J. Keegan

Mark J. Keegan 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: 20200390881
    Abstract: This invention relates to compositions, and related methods, of synthetic nanocarriers that comprise immunomodulatory agents and antigens that are differentially released from the synthetic nanocarriers.
    Type: Application
    Filed: January 27, 2020
    Publication date: December 17, 2020
    Applicant: Selecta Biosciences, Inc.
    Inventors: Grayson B. Lipford, Charles Zepp, Yun Gao, Mark J. Keegan, Sam Baldwin, Fen-ni Fu, Lloyd Johnston
  • Publication number: 20180256709
    Abstract: This invention relates to compositions, and related compounds and methods, of conjugates of immunomodulatory agents and polymers or unit(s) thereof. The conjugates may be contained within synthetic nanocarriers, and the immunomodulatory agents may be released from the synthetic nanocarriers in a pH sensitive manner.
    Type: Application
    Filed: February 5, 2018
    Publication date: September 13, 2018
    Applicant: Selecta Biosciences, Inc.
    Inventors: Charles Zepp, Grayson B. Lipford, Yun Gao, Lloyd Johnston, Fen-ni Fu, Mark J. Keegan, Sam Baldwin
  • Patent number: 9884112
    Abstract: This invention relates to compositions, and related compounds and methods, of conjugates of immunomodulatory agents and polymers or unit(s) thereof. The conjugates may be contained within synthetic nanocarriers, and the immunomodulatory agents may be released from the synthetic nanocarriers in a pH sensitive manner.
    Type: Grant
    Filed: March 13, 2015
    Date of Patent: February 6, 2018
    Assignee: Selecta Biosciences, Inc.
    Inventors: Charles Zepp, Grayson B. Lipford, Yun Gao, Lloyd Johnston, Fen-ni Fu, Mark J. Keegan, Sam Baldwin
  • Publication number: 20150328300
    Abstract: This invention relates to compositions, and related compounds and methods, of conjugates of immunomodulatory agents and polymers or unit(s) thereof. The conjugates may be contained within synthetic nanocarriers, and the immunomodulatory agents may be released from the synthetic nanocarriers in a pH sensitive manner.
    Type: Application
    Filed: March 13, 2015
    Publication date: November 19, 2015
    Applicant: Selecta Biosciences, Inc.
    Inventors: Charles Zepp, Grayson B. Lipford, Yun Gao, Lloyd Johnston, Fen-ni Fu, Mark J. Keegan, Sam Baldwin
  • Patent number: 9006254
    Abstract: This invention relates to compositions, and related compounds and methods, of conjugates of immunomodulatory agents and polymers or unit(s) thereof. The conjugates may be contained within synthetic nanocarriers, and the immunomodulatory agents may be released from the synthetic nanocarriers in a pH sensitive manner.
    Type: Grant
    Filed: December 23, 2013
    Date of Patent: April 14, 2015
    Assignee: Selecta Biosciences, Inc.
    Inventors: Charles Zepp, Grayson B. Lipford, Yun Gao, Lloyd Johnston, Fen-ni Fu, Mark J. Keegan, Sam Baldwin
  • Publication number: 20140242173
    Abstract: This invention relates to compositions, and related methods, of synthetic nanocarriers that target sites of action in cells, such as antigen presenting cells (APCs), and comprise immunomodulatory agents that dissociate from the synthetic nanocarriers in a pH sensitive manner. Also disclosed are compositions and methods relating to synthetic nanocarriers that encapsulate labile immunomodulatory agents that dissociate from the synthetic nanocarriers in a pH sensitive manner.
    Type: Application
    Filed: May 8, 2014
    Publication date: August 28, 2014
    Applicant: Selecta Biosciences, Inc.
    Inventors: Charles Zepp, Yun Gao, Mark J. Keegan, Sam Baldwin, Fen-ni Fu, Lloyd Johnston, Grayson B. Lipford
  • Publication number: 20140193453
    Abstract: This invention relates to compositions, and related compounds and methods, of conjugates of immunomodulatory agents and polymers or unit(s) thereof. The conjugates may be contained within synthetic nanocarriers, and the immunomodulatory agents may be released from the synthetic nanocarriers in a pH sensitive manner.
    Type: Application
    Filed: December 23, 2013
    Publication date: July 10, 2014
    Applicant: SELECTA BIOSCIENCES, INC.
    Inventors: CHARLES ZEPP, GRAYSON B. LIPFORD, YUN GAO, LLOYD JOHNSTON, FEN-NI FU, MARK J. KEEGAN, SAM BALDWIN
  • Publication number: 20140030344
    Abstract: This invention relates to compositions, and related methods, of synthetic nanocarriers that target sites of action in cells, such as antigen presenting cells (APCs), and comprise immunomodulatory agents that dissociate from the synthetic nanocarriers in a pH sensitive manner. Also disclosed are compositions and methods relating to synthetic nanocarriers that encapsulate labile immunomodulatory agents that dissociate from the synthetic nanocarriers in a pH sensitive manner.
    Type: Application
    Filed: July 22, 2013
    Publication date: January 30, 2014
    Applicant: Selecta Biosciences, Inc.
    Inventors: Charles Zepp, Yun Gao, Mark J. Keegan, Sam Baldwin, Fen-ni Fu, Lloyd Johnston, Grayson B. Lipford
  • Patent number: 8629151
    Abstract: This invention relates to compositions, and related compounds and methods, of conjugates of immunomodulatory agents and polymers or unit(s) thereof. The conjugates may be contained within synthetic nanocarriers, and the immunomodulatory agents may be released from the synthetic nanocarriers in a pH sensitive manner.
    Type: Grant
    Filed: May 26, 2010
    Date of Patent: January 14, 2014
    Assignee: Selecta Biosciences, Inc.
    Inventors: Charles Zepp, Grayson B. Lipford, Yun Gao, Lloyd Johnston, Fen-ni Fu, Mark J. Keegan, Sam Baldwin
  • Publication number: 20110272836
    Abstract: Vessels, including non-symmetric vessels for mixing fluids, are disclosed. In one aspect, the vessel is one that has a non-rotationally-symmetric interior surface. For example, the vessel may have an oblique frustoconical shape. At least a portion of the mixing vessel may have horizontal cross-sections having varying area, in some embodiments. The vessel may be formed from any suitable material, e.g., glass, plastic, or stainless steel. Such vessels may be used, according to certain embodiments, to create single, double or other multiple emulsions, for example, by exposing liquids or fluids contained therein to relatively high shear rates. In some cases, the vessel may be designed to be pharmaceutical-grade and/or meet ASME Bioprocessing Equipment (ASME-BPE) standards. For instance, the vessel may be used under conditions where the vessel is sterile, and/or the vessel may have a polished internal surface.
    Type: Application
    Filed: April 12, 2011
    Publication date: November 10, 2011
    Applicant: Selecta Biosciences, Inc.
    Inventors: MARK J. KEEGAN, Donna L. Kessel
  • Publication number: 20110262491
    Abstract: This invention relates, in part, to methods of using emulsions for making synthetic nanocarriers and the synthetic nanocarriers formed by such methods.
    Type: Application
    Filed: April 12, 2011
    Publication date: October 27, 2011
    Applicant: Selecta Biosciences, Inc.
    Inventors: Mark J. Keegan, Christopher E. Mooney
  • Publication number: 20110027217
    Abstract: This invention relates to compositions, and related compounds and methods, of conjugates of immunomodulatory agents and polymers or unit(s) thereof. The conjugates may be contained within synthetic nanocarriers, and the immunomodulatory agents may be released from the synthetic nanocarriers in a pH sensitive manner.
    Type: Application
    Filed: May 26, 2010
    Publication date: February 3, 2011
    Applicant: SELECTA BIOSCIENCES, INC.
    Inventors: CHARLES ZEPP, GRAYSON B. LIPFORD, YUN GAO, LLOYD JOHNSTON, FEN-NI FU FU, MARK J. KEEGAN, SAM BALDWIN
  • Publication number: 20110020388
    Abstract: This invention relates to compositions, and related methods, of synthetic nanocarriers that target sites of action in cells, such as antigen presenting cells (APCs), and comprise immunomodulatory agents that dissociate from the synthetic nanocarriers in a pH sensitive manner. Also disclosed are compositions and methods relating to synthetic nanocarriers that encapsulate labile immunomodulatory agents that dissociate from the synthetic nanocarriers in a pH sensitive manner.
    Type: Application
    Filed: May 26, 2010
    Publication date: January 27, 2011
    Applicant: Selecta Biosciences, Inc.
    Inventors: CHARLES ZEPP, Yun Gao, Mark J. Keegan, Sam Baldwin, Fen-ni Fu, Lloyd Johnston, Grayson B. Lipford
  • Publication number: 20100303850
    Abstract: This invention relates to compositions, and related methods, of synthetic nanocarriers that comprise immunomodulatory agents and antigens that are differentially released from the synthetic nanocarriers.
    Type: Application
    Filed: May 26, 2010
    Publication date: December 2, 2010
    Applicant: Selecta Biosciences, Inc.
    Inventors: Grayson B. Lipford, Charles Zepp, Yun Gao, Mark J. Keegan, Sam Baldwin, Fen-ni Fu, Llyod Johnston
  • Patent number: 6560897
    Abstract: Improved spray drying apparati, and methods of use thereof, have been developed. The spray drying equipment includes a primary drying chamber and a secondary drying apparatus which includes tubing having a length sufficient to increase the contact time between the drying gas and the droplets/particles to dry the particles to the extent desired, at a drying rate and temperature which would be too low to provide adequate drying without the secondary drying apparatus. The secondary drying apparatus increases the drying efficiency of the spray dryer system without increasing the drying rate, while minimizing loss in yield. Te secondary drying apparatus can include multiple secondary apparati, which are independently controlled for temperature and/or have different dimensions (cross-sectional areas and/or lengths), to allow for optimization of drying conditions.
    Type: Grant
    Filed: October 26, 2001
    Date of Patent: May 13, 2003
    Assignee: Acusphere, Inc.
    Inventors: Donald E. Chickering, III, Mark J. Keegan, Greg Randall, Howard Bernstein, Julie Straub
  • Publication number: 20030037459
    Abstract: Improved spray drying apparati, and methods of use thereof, have been developed. The spray drying equipment includes a primary drying chamber and a secondary drying apparatus which includes tubing having a length sufficient to increase the contact time between the drying gas and the droplets/particles to dry the particles to the extent desired, at a drying rate and temperature which would be too low to provide adequate drying without the secondary drying apparatus. The secondary drying apparatus increases the drying efficiency of the spray dryer system without increasing the drying rate, while minimizing loss in yield. Te secondary drying apparatus can include multiple secondary apparati, which are independently controlled for temperature and/or have different dimensions (cross-sectional areas and/or lengths), to allow for optimization of drying conditions.
    Type: Application
    Filed: October 26, 2001
    Publication date: February 27, 2003
    Applicant: Acusphere, Inc.
    Inventors: Donald E. Chickering, Mark J. Keegan, Greg Randall, Howard Bernstein, Julie Straub
  • Patent number: 6308434
    Abstract: Improved spray drying methods of have been developed. The spray drying method includes use of a primary drying chamber and a secondary drying apparatus which includes tubing having a length sufficient to increase the contact time between the drying gas and the droplets/particles to dry the particles to the extent desired, at a drying rate and temperature which would be too low to provide adequate drying without the secondary drying apparatus. The secondary drying apparatus increases the drying efficiency of the spray dryer system without increasing the drying rate, while minimizing loss in yield. The ratio of the length of tubing to the length of the primary drying chamber is at least 2:1. The tubing diameter is substantially smaller than the diameter of the primary drying chamber, such that the particles move at higher velocity through the tubing to minimize product losses.
    Type: Grant
    Filed: January 9, 2001
    Date of Patent: October 30, 2001
    Assignee: Acusphere, Inc.
    Inventors: Donald E. Chickering, III, Mark J. Keegan, Greg Randall, Howard Bernstein, Julie Straub
  • Publication number: 20010027614
    Abstract: Improved spray drying apparati, and methods of use thereof, have been developed. The spray drying equipment includes a primary drying chamber and a secondary drying apparatus which includes tubing having a length sufficient to increase the contact time between the drying gas and the droplets/particles to dry the particles to the extent desired, at a drying rate and temperature which would be too low to provide adequate drying without the secondary drying apparatus. The secondary drying apparatus increases the drying efficiency of the spray dryer system without increasing the drying rate, while minimizing loss in yield. The ratio of the length of tubing to the length of the primary drying chamber is at least 2:1. The tubing diameter is substantially smaller than the diameter of the primary drying chamber, such that the particles move at higher velocity through the tubing to minimize product losses.
    Type: Application
    Filed: January 9, 2001
    Publication date: October 11, 2001
    Inventors: Donald E. Chickering, Mark J. Keegan, Greg Randall, Howard Bernstein, Julie Straub