Patents by Inventor John Perrin Davis

John Perrin Davis 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: 8753773
    Abstract: A simple and low cost device to detect the presence of mercury or other trace metals in the environment and quantify said concentration by spectrophotometric, colorimetric, or electrical conductivity is disclosed. Owing to its small size, it is suitable for portable mercury detectors or detectors that may be worn as badges in the breathing zone of workers.
    Type: Grant
    Filed: June 29, 2012
    Date of Patent: June 17, 2014
    Inventors: John Perrin Davis, Cheryl D. Stevenson
  • Patent number: 8656638
    Abstract: Compounds and methods that release 1-methylcyclopropene, 1-trifluoromethylcyclopropene, and other substituted cyclopropenes are disclosed. The compounds are of the class of chemical analogue of 2-oxa-bicyclo[2.1.0]penta-3-one useful as vessels for molecular plant ethylene receptor inhibitors. The compounds and methods overcome present limitations for storage, transportation, and application of the cyclopropene containing compounds by using light, including sunlight, and/or heat as the primary release trigger. Additional products released include innocuous gases and value added aryl-group compounds.
    Type: Grant
    Filed: March 23, 2011
    Date of Patent: February 25, 2014
    Inventors: Cheryl D. Stevenson, John Perrin Davis
  • Publication number: 20130281296
    Abstract: Compounds and methods that release 1-methylcyclopropene, 1-trifluoromethylcyclopropene, and other substituted cyclopropenes are disclosed. The compounds and methods overcome present limitations for storage, transportation, and application of the cyclopropene containing compounds by using light, including sunlight, and/or heat as the primary release trigger. Additional products released include innocuous gases and value added aryl-group compounds.
    Type: Application
    Filed: June 4, 2013
    Publication date: October 24, 2013
    Inventors: Cheryl D. Stevenson, John Perrin Davis
  • Publication number: 20130001081
    Abstract: A simple and low cost device to detect the presence of mercury or other trace metals in the environment and quantify said concentration by spectrophotometric, colorimetric, or electrical conductivity is disclosed. Owing to its small size, it is suitable for portable mercury detectors or detectors that may be worn as badges in the breathing zone of workers.
    Type: Application
    Filed: June 29, 2012
    Publication date: January 3, 2013
    Inventors: John Perrin Davis, Cheryl D. Stevenson
  • Patent number: 8252459
    Abstract: A new invention in cathode composition, arrangement, and design for primary and secondary batteries that offers high power, high capacity, and high specific energy is proposed herein. The claimed technology described herein incorporates materials into the cathode that results in a cathode which may accept two electrons per active site. Other advantages of the technology included herein include: 1) lower cost, 2) environmental friendliness, 3) safety, 4) a wide operational temperature range, 5) backwards compatibility with present electrochemical cells, and 6) versatility. The technology is cross-cutting, and has high impact applications, such as for electric vehicles, which require both high power and high specific energy.
    Type: Grant
    Filed: May 12, 2010
    Date of Patent: August 28, 2012
    Inventors: Cheryl D. Stevenson, John Perrin Davis
  • Publication number: 20110232178
    Abstract: Compounds and methods that release 1-methylcyclopropene, 1-trifluoromethylcyclopropene, and other substituted cyclopropenes are disclosed. The compounds and methods overcome present limitations for storage, transportation, and application of the cyclopropene containing compounds by using light, including sunlight, and/or heat as the primary release trigger. Additional products released include innocuous gases and value added aryl-group compounds.
    Type: Application
    Filed: March 23, 2011
    Publication date: September 29, 2011
    Inventors: John Perrin Davis, Cheryl D. Stevenson
  • Publication number: 20100288628
    Abstract: A new invention in cathode composition, arrangement, and design for primary and secondary batteries that offers high power, high capacity, and high specific energy is proposed herein. The claimed technology described herein incorporates materials into the cathode that results in a cathode which may accept two electrons per active site. Other advantages of the technology included herein include: 1) lower cost, 2) environmental friendliness, 3) safety, 4) a wide operational temperature range, 5) backwards compatibility with present electrochemical cells, and 6) versatility. The technology is cross-cutting, and has high impact applications, such as for electric vehicles, which require both high power and high specific energy.
    Type: Application
    Filed: May 12, 2010
    Publication date: November 18, 2010
    Inventors: Cheryl D. Stevenson, John Perrin Davis