Patents by Inventor Sean A. Richards

Sean A. Richards 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: 20090149654
    Abstract: The present invention provides novel fluorophilic compounds having structure VII wherein R1 is a C1-C20 aliphatic, a C2-C20 cycloaliphatic, or a C2-C20 aromatic radical comprising at least one functional group susceptible to reaction with nucleophilic fluoride ion or an electrophilic fluorinating agent; R2 is a C1-C10 aliphatic radical; R3 is hydrogen or a C1-C10 aliphatic radical; R4 is hydrogen or a C1-C10 aliphatic radical; and R5 is hydrogen, a C1-C10 aliphatic radical, a C2-C10 cycloaliphatic radical, or a C2-C20 aromatic radical. The fluorophilic compounds are provided in both racemic and enantiomerically enriched forms and are useful as intermediates in the preparation of novel PET imaging agents and probes useful in the discovery and performance assessment of PET imaging agents.
    Type: Application
    Filed: December 7, 2007
    Publication date: June 11, 2009
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Kande Kankanamalage Dayarathna Amarasinghe, Michael James Rishel, Sean Richard Dinn, Bruce Fletcher Johnson
  • Publication number: 20090143587
    Abstract: The present invention provides novel fluorophilic compounds having structure VII wherein Q is a carbonyl group, a protected carbonyl group, a hydroxy methine group, or a protected hydroxy methine group; R1 is a C1-C20 aliphatic, C2-C20 cycloaliphatic, or C2-C20 aromatic radical comprising at least one functional group susceptible to reaction with nucleophilic fluoride ion or an electrophilic fluorinating agent; R2 is hydrogen or a C1-C10 aliphatic radical; and R3 is hydrogen or a C1-C10 aliphatic radical. The fluorophilic compounds are provided in both racemic and enantiomerically enriched forms and are useful as intermediates in the preparation of novel PET imaging agents and probes useful in the discovery and performance assessment of PET imaging agents. The fluorophilic compounds are particularly useful in the preparation of PET imaging agents and probes having a high affinity for VMAT-2, a biomarker implicated in human diabetes and other illnesses such as Parkinson's disease.
    Type: Application
    Filed: November 29, 2007
    Publication date: June 4, 2009
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Michael James Rishel, Kande Kankanamalage Amarasinghe, Sean Richard Dinn, Bruce Fletcher Johnson
  • Publication number: 20090142265
    Abstract: The present invention provides novel alpha-fluoroalkyl compounds having structure I and the corresponding dihydrotetrabenazine compounds IV wherein R1 is a C1-C10 fluorinated aliphatic radical; R2 is hydrogen or a C1-C10 aliphatic radical; and R3 is hydrogen or a C1-C10 aliphatic radical. The alpha-fluoroalkyl compounds are provided in both racemic and enantiomerically enriched forms and may comprise either or both of fluorine-18 and fluorine 19. The alpha-fluoroalkyl compounds are shown to possess high affinity for VMAT-2, a biomarker implicated in human diabetes. The alpha-fluoroalkyl compounds comprising a fluorine-18 group are useful as PET imaging agents targeting the VMAT-2 biomarker. The non-radiolabled alpha-fluoroalkyl compounds are useful as probes for the discovery of PET imaging agents.
    Type: Application
    Filed: November 29, 2007
    Publication date: June 4, 2009
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Michael James Rishel, Kande Kankanamalage Dayarathna Amarasinghe, Sean Richard Dinn, Bruce Fletcher Johnson
  • Publication number: 20090142276
    Abstract: The present invention provides novel alpha-fluoroalkyl dihydrotetrabenazine compounds I wherein R1 is a C1-C10 fluorinated aliphatic radical; R2 is hydrogen or a C1-C10 aliphatic radical; R3 is hydrogen or a C1-C10 aliphatic radical; and R4 is a C1-C10 aliphatic radical, a C3-C10 cycloaliphatic radical, or a C3-C10 aromatic radical. The alpha-fluoroalkyl dihydrotetrabenazine compounds are provided in both racemic and enantiomerically enriched forms and may comprise either or both of fluorine-18 and fluorine 19. The alpha-fluoroalkyl dihydrotetrabenazine compounds are believed to possess high affinity for VMAT-2, a biomarker implicated in human diabetes. The alpha-fluoroalkyl dihydrotetrabenazine compounds comprising a fluorine-18 group are useful as PET imaging agents targeting the VMAT-2 biomarker. The non-radiolabled alpha-fluoroalkyl dihydrotetrabenazine compounds are useful as probes for the discovery of PET imaging agents.
    Type: Application
    Filed: July 16, 2008
    Publication date: June 4, 2009
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Michael James Rishel, Bruce Fletcher Johnson, Kande Kankanamalage Dayarathna Amarasinghe, Sean Richard Dinn
  • Publication number: 20090122329
    Abstract: Disclosed herein are methods and apparatus for creating an interactive interface allowing a user to create a virtual design on-screen. Specifications of the design created by the user may be subsequently transmitted to a server for high-resolution rendering and printing on an adhesive appliqué or other material adapted to receive print. In some embodiments, the created product is adapted to fit a particular device, such as a cell phone, laptop, personal digital assistant, snowboard, boat, or motor vehicle. Alternatively, the printed product can be adhesively applied to a portion of a wall, a window, or upon the side of a building. In one embodiment, the interactive interface allows the user to create their own personalized product by using a combination of images, colors, text, and shapes, specified for a particular CAD that will print onto an adhesive skin. In this manner, the adhesive skin can be made to look exactly like the finished product of a personally customized design presented on a computer screen.
    Type: Application
    Filed: November 7, 2008
    Publication date: May 14, 2009
    Applicant: SKINIT, INC.
    Inventors: Darrin G. HEGEMIER, Darryl R. KUHN, David Marc PEACE, Sean Richard POWELL
  • Publication number: 20090110636
    Abstract: The present invention provides novel fluorinated ether compounds having structure I wherein R1 is a C2-C10 fluorinated aliphatic radical; R2 is a C1-C10 aliphatic radical, or a C3-C10 cycloaliphatic radical; R3 is hydrogen or a C1-C10 aliphatic radical; and R4 is hydrogen or a C1-C10 aliphatic radical. The fluorinated ether compounds are provided in both racemic and enantiomerically enriched forms and may comprise either or both of fluorine-18 and fluorine 19. The fluorinated ether compounds are shown to possess high affinity for VMAT-2, a biomarker implicated in human diabetes. The fluorinated ether compounds comprising a fluorine-18 group are useful as PET imaging agents targeting the VMAT-2 biomarker. The non-radiolabeled fluorinated ether compounds are useful as probes for the discovery of PET imaging agents.
    Type: Application
    Filed: October 25, 2007
    Publication date: April 30, 2009
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Kande Kankanamalage Dayarathna Amarasinghe, Michael James Rishel, Sean Richard Dinn, Bruce Fletcher Johnson
  • Publication number: 20090111990
    Abstract: The present invention provides novel fluorophilic compounds having structure VI wherein R1 is a C2-C20 aliphatic, a C3-C20 cycloaliphatic, or a C3-C20 aromatic radical comprising at least one functional group susceptible to reaction with nucleophilic fluoride ion or an electrophilic fluorinating agent; R2 is a C1-C10 aliphatic radical, or a C3-C10 cycloaliphatic radical; R3 is hydrogen or a C1-C10 aliphatic radical; and R4 is hydrogen or a C1-C10 aliphatic radical. The fluorophilic compounds are provided in both racemic and enantiomerically enriched forms and are useful as intermediates in the preparation of novel PET imaging agents and probes useful in the discovery and performance assessment of PET imaging agents. The fluorophilic compounds are particularly useful in the preparation of PET imaging agents and probes having a high affinity for VMAT-2, a biomarker implicated in human diabetes and other illnesses such as Parkinson's disease.
    Type: Application
    Filed: October 25, 2007
    Publication date: April 30, 2009
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Kande Kankanamalage Dayarathna Amarasinghe, Michael James Rishel, Sean Richard Dinn, Bruce Fletcher Johnson
  • Publication number: 20080306267
    Abstract: A method of preparing a tetrabenazine compound (TBZ compound) having structure I comprising the steps of reacting a nucleophilic alkenyl species with aldehyde compound II and oxidizing the resultant allylic alcohol to provide enone III. The protecting group P1 on the tetrahydroisoquinoline nitrogen is removed and the resultant deprotected intermediate is induced to undergo an amino cyclization reaction to provide a product TBZ compound having structure I. The method may be used to prepare either enantiomeric form of tetrabenazine; (+)-tetrabenazine or (?)-tetrabenazine. Alternatively the method may be adapted to provide a mixture enriched in one tetrabenazine enantiomer, a racemic mixture, or a diastereomeric mixture of tetrabenazine compounds. In addition, the present invention provides novel synthetic intermediate compositions which may be used to prepare either or both enantiomers of tetrabenazine, derivatives of tetrabenazine, and analogs of tetrabenazine.
    Type: Application
    Filed: June 8, 2007
    Publication date: December 11, 2008
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Michael James Rishel, Kande Kankananamalage Dayarathna Amarasinghe, Sean Richard Dinn, Bruce Fletcher Johnson
  • Publication number: 20080306269
    Abstract: A method of preparing a tetrabenazine compound (TBZ compound) having structure I comprising the steps of reacting a nucleophilic alkenyl species with aldehyde compound II and oxidizing the resultant allylic alcohol to provide enone III. The protecting group P1 on the tetrahydroisoquinoline nitrogen is removed and the resultant deprotected intermediate is induced to undergo an amino cyclization reaction to provide a product TBZ compound having structure I. The method may be used to prepare either enantiomeric form of tetrabenazine; (+)-tetrabenazine or (?)-tetrabenazine. Alternatively the method may be adapted to provide a mixture enriched in one tetrabenazine enantiomer, a racemic mixture, or a diastereomeric mixture of tetrabenazine compounds. In addition, the present invention provides novel synthetic intermediate compositions which may be used to prepare either or both enantiomers of tetrabenazine, derivatives of tetrabenazine, and analogs of tetrabenazine.
    Type: Application
    Filed: June 8, 2007
    Publication date: December 11, 2008
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Michael James Rishel, Kande Kankananamalage Dayarathna Amarasinghe, Sean Richard Dinn, Bruce Fletcher Johnson
  • Patent number: 7385221
    Abstract: Novel silylethynylated heteroacenes and electronic devices made with those compounds are disclosed.
    Type: Grant
    Filed: March 8, 2005
    Date of Patent: June 10, 2008
    Assignee: University of Kentucky Research Foundation
    Inventors: John E. Anthony, Marcia M. Payne, Susan A. Odom, Sean Richard Parkin
  • Publication number: 20080128680
    Abstract: Novel silylethynylated heteroacenes and electronic devices made with those compounds are disclosed.
    Type: Application
    Filed: March 8, 2005
    Publication date: June 5, 2008
    Inventors: John E. Anthony, Marcia M. Payne, Susan A. Odom, Sean Richard Parkin