Patents by Inventor Krishna C. Persaud

Krishna C. Persaud 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).

  • Semiconducting organic polymer gas sensor
    Patent number: 6180064
    Abstract: A gas sensor comprising a pair of electrodes. The gas sensor includes one or more semiconducting organic polymers deposited between the pair of electrodes in such a manner as to effect a semiconducting electrical connection therebetween. The gas sensor also includes a device for applying an electric signal across the electrodes and a detector for detecting a chosen electrical property across the electrodes in the presence of a gas. At least one of the semiconducting organic polymers is polymerized from a monomer comprising a five membered heterocyclic aromatic ring with substituent groups at the 2 and 5 positions.
    Type: Grant
    Filed: March 11, 1997
    Date of Patent: January 30, 2001
    Assignee: Osmetech PLC
    Inventors: Krishna C. Persaud, Paolo Pelosi
  • Semiconducting organic polymers for gas sensors
    Patent number: 5882497
    Abstract: Described is a method of depositing multilayers of semiconducting organic polymers. The method involves polymerising one layer by exposing an oxidising agent to a vapour containing the monomer and polymerising another layer of semiconducting organic polymer electrochemically.
    Type: Grant
    Filed: May 19, 1997
    Date of Patent: March 16, 1999
    Assignee: Aromascan PLC
    Inventors: Krishna C. Persaud, Paolo Pelosi