Patents by Inventor Steven A. Castleberry

Steven A. Castleberry 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: 11590240
    Abstract: Disclosed herein are conjugated polymers comprising a polymer and an all-trans retinoic acid (ATRA) prodrug covalently bound to the polymer by a hydrolysable linker L or a pharmaceutically acceptable salt thereof, and methods of using same to treat certain disorders. In an embodiment, the conjugated polymer comprises poly (vinyl alcohol) covalently bound to ATRA through an ester linkage.
    Type: Grant
    Filed: June 23, 2016
    Date of Patent: February 28, 2023
    Assignee: Massachusetts Institute of Technology
    Inventors: Steven A. Castleberry, Mohiuddin A. Quadir, Paula T. Hammond
  • Publication number: 20180185513
    Abstract: Disclosed herein are conjugated polymers comprising a polymer and an all-trans retinoic acid (ATRA) prodrug covalently bound to the polymer by a hydrolysable linker L or a pharmaceutically acceptable salt thereof, and methods of using same to treat certain disorders. In an embodiment, the conjugated polymer comprises poly (vinyl alcohol) covalently bound to ATRA through an ester linkage.
    Type: Application
    Filed: June 23, 2016
    Publication date: July 5, 2018
    Inventors: Steven A. CASTLEBERRY, Mohiuddin A. QUADIR, Paula T. HAMMOND
  • Patent number: 9463244
    Abstract: The present invention provides, among other things, multilayer film coating compositions, coated substrates and methods thereof. In some embodiments, a structure includes a substrate; and a multilayer film coated on the substrate, wherein adjacent layers of the multilayer film are associated with one another via one or more non-covalent interactions, wherein the multilayer film comprises a first nucleic acid agent present at a loading density, and further wherein the multilayer film is characterized in that, when the structure is placed on a subject so that the multilayer film contacts cells, the first nucleic acid agent is released with a profile characterized by a feature selected from the group consisting of 1) being a burst-free release; 2) being a sustained release; and 3) exhibiting in vitro and/or in vivo biological effectiveness.
    Type: Grant
    Filed: March 7, 2014
    Date of Patent: October 11, 2016
    Assignee: Massachusetts Institute of Technology
    Inventors: Steven A. Castleberry, Paula T. Hammond
  • Publication number: 20140302116
    Abstract: The present invention provides, among other things, multilayer film coating compositions, coated substrates and methods thereof. In some embodiments, a structure includes a substrate; and a multilayer film coated on the substrate, wherein adjacent layers of the multilayer film are associated with one another via one or more non-covalent interactions, wherein the multilayer film comprises a first nucleic acid agent present at a loading density, and further wherein the multilayer film is characterized in that, when the structure is placed on a subject so that the multilayer film contacts cells, the first nucleic acid agent is released with a profile characterized by a feature selected from the group consisting of 1) being a burst-free release; 2) being a sustained release; and 3) exhibiting in vitro and/or in vivo biological effectiveness.
    Type: Application
    Filed: March 7, 2014
    Publication date: October 9, 2014
    Applicant: Massachusetts Institute of Technology
    Inventors: Steven A. Castleberry, Paula T. Hammond