Patents by Inventor Bachaspati Roy

Bachaspati Roy 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).

  • Ink composition
    Patent number: 6379442
    Abstract: A composition comprising: (a) a water-soluble magenta dye; and (b) a dye of the Formula (1) or a salt thereof: wherein R1, R2, R3 are defined in the description.
    Type: Grant
    Filed: April 6, 2000
    Date of Patent: April 30, 2002
    Assignee: Avecia Limited
    Inventors: Aidan Joseph Lavery, Bachaspati Roy, Janette Watkinson, Mark Kenworthy