Patents by Inventor Richard Peter JOHNSON

Richard Peter JOHNSON 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).

  • Synthesis of a triangulene ring system and derivatives thereof
    Patent number: 11236029
    Abstract: A three step synthesis of the 8,12-dihydro-4H-dibenzo[cd,mn]pyren-3a2-ylium cation (triangulenium cation) is effected by cascade cyclization of a tetra-benzyl alcohol precursor in triflic acid solution. This cation is easily observed by NMR and optical spectroscopy. Quenching of the cation into basic solutions or by hydride transfer from triethylsilane provides access to stable dihydro and tetrahydro[3]triangulenes. This route makes several [3]triangulene precursors more readily available for development of new applications in the field of molecular electronics.
    Type: Grant
    Filed: May 18, 2020
    Date of Patent: February 1, 2022
    Assignee: UNIVERSITY OF NEW HAMPSHIRE
    Inventors: Richard Peter Johnson, Carter J. Holt
  • SYNTHESIS OF A TRIANGULENE RING SYSTEM AND DERIVATIVES THEREOF
    Publication number: 20210040019
    Abstract: A three step synthesis of the 8,12-dihydro-4H-dibenzo[cd,mn]pyren-3a2-ylium cation (triangulenium cation) is effected by cascade cyclization of a tetra-benzyl alcohol precursor in triflic acid solution. This cation is easily observed by NMR and optical spectroscopy. Quenching of the cation into basic solutions or by hydride transfer from triethylsilane provides access to stable dihydro and tetrahydro[3]triangulenes. This route makes several [3]triangulene precursors more readily available for development of new applications in the field of molecular electronics.
    Type: Application
    Filed: May 18, 2020
    Publication date: February 11, 2021
    Inventors: Richard Peter Johnson, Carter J. Holt
  • Synthesis of polycyclic aromatic hydrocarbons
    Patent number: 9701596
    Abstract: The present invention relates to the synthesis of polycyclic aromatic compounds. Compounds such as terrylene or quaterrylene may now be prepared in relatively high yield by reaction of naphthalene or perylene via Scholl-type coupling in the presence of a superacid and an oxidant in an inert solvent.
    Type: Grant
    Filed: June 23, 2014
    Date of Patent: July 11, 2017
    Assignee: The University of New Hampshire
    Inventors: Richard Peter Johnson, Rajesh Thamatam
  • Synthesis of Polycyclic Aromatic Hydrocarbons
    Publication number: 20140378727
    Abstract: The present invention relates to the synthesis of polycyclic aromatic compounds. Compounds such as terrylene or quaterrylene may now be prepared in relatively high yield by reaction of naphthalene or perylene via Scholl-type coupling in the presence of a superacid and an oxidant in an inert solvent.
    Type: Application
    Filed: June 23, 2014
    Publication date: December 25, 2014
    Inventors: Richard Peter JOHNSON, Rajesh THAMATAM