Patents by Inventor David L. Witker

David L. Witker 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).

  • Bis(thienyl)isopyrazoles and process for preparing and method for using bis(thienyl)isopyrazoles
    Patent number: 9051401
    Abstract: A synthesis of a new pyrazole-containing monomer by means of an easily implemented two-step process. This monomer can be electropolymerized to yield a stable n-doping polymer that may easily be electrochemically characterized. It is demonstrated that the electrochemical behavior of the polymer films produced is dependent upon the conditions applied during electrodeposition. Films deposited by cycling only at relatively positive potentials (0 to 2000 mV) show less intense n-doping responses than those films obtained by scanning the applied potential throughout a wider range (?2000 mV to 2000 mV).
    Type: Grant
    Filed: February 3, 2014
    Date of Patent: June 9, 2015
    Assignee: The United States of America as Represented by the Secretary of the Navy
    Inventors: David J. Irvin, Jennifer A. Irvin, John D. Stenger-Smith, David L. Witker
  • Bis(thienyl)isopyrazoles and process for preparing and method for using bis(thienyl)isopyrazoles
    Patent number: 8680292
    Abstract: The invention demonstrates the synthesis of a new pyrazole-containing monomer by means of an easily implemented two-step process. This monomer can be electropolymerized to yield a stable n-doping polymer that may easily be electrochemically characterized. It is demonstrated that the electrochemical behavior of the polymer films produced is dependent upon the conditions applied during electrodeposition. Films deposited by cycling only at relatively positive potentials (0 to 2000 mV) show less intense n-doping responses than those films obtained by scanning the applied potential throughout a wider range (?2000 mV to 2000 mV).
    Type: Grant
    Filed: March 6, 2012
    Date of Patent: March 25, 2014
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: David J. Irvin, David L. Witker, John D. Stenger-Smith, Jennifer A. Irvin
  • Bis(thienyl)isopyrazoles and process for preparing and method for using bis(thienyl)isopyrazoles
    Patent number: 8183390
    Abstract: The invention demonstrates the synthesis of a new pyrazole-containing monomer by means of an easily implemented two-step process. This monomer can be electropolymerized to yield a stable n-doping polymer that may easily be electrochemically characterized. It is demonstrated that the electrochemical behavior of the polymer films produced is dependent upon the conditions applied during electrodeposition. Films deposited by cycling only at relatively positive potentials (0 to 2000 mV) show less intense n-doping responses than those films obtained by scanning the applied potential throughout a wider range (?2000 mV to 2000 mV).
    Type: Grant
    Filed: August 18, 2010
    Date of Patent: May 22, 2012
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: David J. Irvin, David L. Witker, John D. Stenger-Smith, Jennifer A. Irvin
  • Bis(thienyl)isopyrazoles and process for preparing and method for using bis(thienyl)isopyrazoles
    Patent number: 7829660
    Abstract: The present invention demonstrates the synthesis of a new pyrazole-containing monomer by means of an easily implemented two-step process. This monomer can be electropolymerized to yield a stable n-doping polymer that may easily be electrochemically characterized. It is demonstrated that the electrochemical behavior of the polymer films produced is dependent upon the conditions applied during electrodeposition. Films deposited by cycling only at relatively positive potentials (0 to 2000 mV) show less intense n-doping responses than those films obtained by scanning the applied potential throughout a wider range (?2000 mV to 2000 mV).
    Type: Grant
    Filed: July 24, 2008
    Date of Patent: November 9, 2010
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: David J. Irvin, David L. Witker, John D. Stenger-Smith, Jennifer A. Irvin
  • Bis(thienyl)isopyrazoles and process for preparing and method for using bis(thienyl)isopyrazoles
    Patent number: 7608179
    Abstract: The present invention demonstrates the synthesis of a new pyrazole-containing monomer by an easily implemented two-step process. This monomer can be electropolymerized to yield a stable n-doping polymer that may easily be electrochemically characterized. It is demonstrated that the electrochemical behavior of the polymer films produced is dependent upon the conditions applied during electrodeposition. Films deposited by cycling only at relatively positive potentials (0 to 2000 mV) show less intense n-doping responses than those films obtained by scanning the applied potential throughout a wider range (?2000 mV to 2000 mV).
    Type: Grant
    Filed: July 24, 2008
    Date of Patent: October 27, 2009
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: David J. Irvin, David L. Witker, John D. Stenger-Smith, Jennifer A. Irvin
  • Bis(thienyl)isopyrazoles and process for preparing and method for using bis(thienyl)isopyrazoles
    Patent number: 7456295
    Abstract: The present invention demonstrates the synthesis of a new pyrazole-containing monomer by means of an easily implemented two-step process. This monomer can be electropolymerized to yield a stable n-doping polymer that may easily be electrochemically characterized. It is demonstrated that the electrochemical behavior of the polymer films produced is dependent upon the conditions applied during electrodeposition. Films deposited by cycling only at relatively positive potentials (0 to 2000 mV) show less intense n-doping responses than those films obtained by scanning the applied potential throughout a wider range (?2000 mV to 2000 mV). It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope of the claims.
    Type: Grant
    Filed: November 25, 2006
    Date of Patent: November 25, 2008
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: David J. Irvin, David L. Witker, John D. Stenger-Smith, Jennifer A. Irvin
  • Process for preparing n-doping conjugated electroactive polymer using poly(3,4 difluorothiophene)
    Patent number: 7399433
    Abstract: The present invention demonstrates the synthesis by electropolymerization of a new stable n-doping conjugated polymer poly(3,4-difluorothiophene) that may easily be electrochemically characterized.
    Type: Grant
    Filed: November 27, 2006
    Date of Patent: July 15, 2008
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: David J. Irvin, David L. Witker, John D. Stenger-Smith, Jennifer A. Irvin