Patents by Inventor Sean Culbertson

Sean Culbertson 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).

  • HYBRID ELECTRIC DRIVE SYSTEMS FOR UNMANNED AIRCRAFT SYSTEMS
    Publication number: 20230146302
    Abstract: A hybrid powerplant can include a main power bus; an engine; a generator coupled to the engine, the generator in electrical communication with the main power bus; an energy storage; an electrical switch disposed electrically between the main power bus and the energy storage; and a controller in electrical communication with the electrical switch.
    Type: Application
    Filed: September 26, 2022
    Publication date: May 11, 2023
    Applicant: Dragoon Technology LLC
    Inventors: CARLOS MURPHY, JASON DOUGLAS, SEAN CULBERTSON
  • Conjugates having a degradable linkage and polymeric reagents useful in preparing such conjugates
    Patent number: 8252275
    Abstract: The present invention provides conjugates having a degradable linkage and polymeric reagents useful in preparing such conjugates. The conjugates as well as the polymeric reagents used to form the conjugates include at least one of each the following: an aromatic moiety comprising an ionizable hydrogen atom, a spacer moiety, and a water-soluble polymer. Methods of making polymeric reagents and conjugates, as well as methods for administering conjugates and compositions, are also provided.
    Type: Grant
    Filed: June 16, 2006
    Date of Patent: August 28, 2012
    Assignee: Nektar Therapeutics
    Inventors: Michael D. Bentley, Sean Culbertson, Samuel P. McManus
  • Conjugates having a degradable linkage and polymeric reagents useful in preparing such conjugates
    Publication number: 20060293499
    Abstract: The present invention provides conjugates having a degradable linkage and polymeric reagents useful in preparing such conjugates. The conjugates as well as the polymeric reagents used to form the conjugates include at least one of each the following: an aromatic moiety comprising an ionizable hydrogen atom, a spacer moiety, and a water-soluble polymer. Methods of making polymeric reagents and conjugates, as well as methods for administering conjugates and compositions, are also provided.
    Type: Application
    Filed: June 16, 2006
    Publication date: December 28, 2006
    Inventors: Michael Bentley, Sean Culbertson, Samuel McManus