Patents by Inventor Peter N. Njoki

Peter N. Njoki 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).

  • Supported catalyst
    Patent number: 9548501
    Abstract: A supported catalyst is prepared by a process that includes establishing shell-removal conditions for a supported catalyst intermediate that includes capped nanoparticles of a catalyst material dispersed on a carbon support. The capped nanoparticles each include a platinum alloy core capped in an organic shell. The shell-removal conditions include an elevated temperature and an inert gas atmosphere that is substantially free of oxygen. The organic shell is removed from the platinum alloy core under the shell-removal conditions to limit thermal decomposition of the carbon support and thereby limit agglomeration of the catalyst material such that the supported catalyst includes an electrochemical surface area of at least 30 m2/gPt.
    Type: Grant
    Filed: December 17, 2009
    Date of Patent: January 17, 2017
    Assignees: The Research Foundation of State University Of New York Research Development Services, Binghamton University, Toyoata Jidosha Kabushiki Kaisha, Audi AG
    Inventors: Chuan-Jian Zhong, Brigid Wanjala, Jin Luo, Peter N. Njoki, Rameshwori Loukrakpam, Minhua Shao, Lesia V. Protsailo, Tetsuo Kawamura
  • METHOD FOR TREATING A SUPPORTED CATALYST
    Publication number: 20120258854
    Abstract: A method for treating a supported catalyst includes establishing shell-removal conditions for a supported catalyst that includes nanoparticles of a catalyst material on a carbon support. The nanoparticles each include a platinum alloy core capped in an organic shell. The shell-removal conditions include an elevated temperature and an inert gas atmosphere that is substantially free of oxygen. The organic shell is then removed from the platinum alloy core in the shell-removal conditions.
    Type: Application
    Filed: December 17, 2009
    Publication date: October 11, 2012
    Inventors: Tetsuo Kawamura, Minhua Shao, Lesia V. Protsailo, Chuan-jian Zhong, Bridgid Wanjala, Jin Luo, Peter N. Njoki, Rameshwori Loukrakpam
  • SUPPORTED CATALYST
    Publication number: 20120190536
    Abstract: A supported catalyst is prepared by a process that includes establishing shell-removal conditions for a supported catalyst intermediate that includes capped nanoparticles of a catalyst material dispersed on a carbon support. The capped nanoparticles each include a platinum alloy core capped in an organic shell. The shell-removal conditions include an elevated temperature and an inert gas atmosphere that is substantially free of oxygen. The organic shell is removed from the platinum alloy core under the shell-removal conditions to limit thermal decomposition of the carbon support and thereby limit agglomeration of the catalyst material such that the supported catalyst includes an electrochemical surface area of at least 30 m2/g Pt.
    Type: Application
    Filed: December 17, 2009
    Publication date: July 26, 2012
    Inventors: Chuan-Jian Zhong, Brigid Wanjala, Jin Luo, Peter N. Njoki, Rameshwori Loukrakpam, Minhua Shao, Lesia V. Protsailo, Tetsuo Kawamura
  • Controlled synthesis of highly monodispersed gold nanoparticles
    Patent number: 7524354
    Abstract: A method of synthesizing highly monodispersed Au nanoparticles having diameters in the range of 30-90 nm. Seed nanoparticles in a controlled concentration are combined with a precursor, also in a controlled concentration, a reducing and capping agent (e.g., sodium acrylate) in aqueous solution. Under controlled conditions of pH, temperature, and time, highly monodispersed nanoparticles having diameters in the range of 30-100 nm are produced. A relative size standard deviation of the size distribution of the resulting nanoparticles is as low as 2%.
    Type: Grant
    Filed: July 7, 2005
    Date of Patent: April 28, 2009
    Assignee: Research Foundation of State University of New York
    Inventors: Chuan-Jian Zhong, Peter N. Njoki, Jin Luo