Patents by Inventor Jayant Shivji Lodaya

Jayant Shivji Lodaya 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).

  • Preparation of N-phenyl-benzoquinoneimine from hydroxydiphenylamines
    Patent number: 6187937
    Abstract: A hydroxydiphenylamine compound can be converted to an N-phenylquinoneimine by reacting the hydroxydiphenylamine with oxygen or an oxygen containing gas in the presence of a modified activated carbon catalyst, the catalyst having had surface oxides removed therefrom.
    Type: Grant
    Filed: December 23, 1998
    Date of Patent: February 13, 2001
    Assignee: Flexsys America L.P.
    Inventors: Donald L. Fields, Jr., Michael K. Stern, Jayant Shivji Lodaya
  • Preparation of quinonediimines from phenylenediamines using a hypochlorite as an oxidation agent
    Patent number: 6114554
    Abstract: A phenylenediamine compound can be converted, with high selectivity, into its corresponding quinonediimine by reacting the phenylenediamine with a hypochlorite oxidation reactant.
    Type: Grant
    Filed: June 3, 1998
    Date of Patent: September 5, 2000
    Assignee: Flexsys America L.P.
    Inventors: Jayant Shivji Lodaya, Raymond Anton Lohr, Jr., Donald Lee Fields, Jr.