Patents by Inventor Pranab Kumar Raychaudhuri

Pranab Kumar Raychaudhuri 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).

  • Barrier type photovoltaic cells with enhanced open-circuit voltage, and process of manufacture
    Patent number: 4035197
    Abstract: A cadmium telluride photovoltaic cell is produced with increased conversion efficiency arising from enhanced open-circuit voltage. Such voltage is achieved by altering the surface of the crystalline cadmium telluride that contacts the barrier metal by heating the cadmium telluride in the presence of oxygen piror to depositing the barrier metal.
    Type: Grant
    Filed: March 30, 1976
    Date of Patent: July 12, 1977
    Assignee: Eastman Kodak Company
    Inventor: Pranab Kumar Raychaudhuri