Patents by Inventor Channabasappa S. Angadiyavar

Channabasappa S. Angadiyavar 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).

  • 2,4,6 Trisubstituted pyridine dye lasers
    Patent number: 3986140
    Abstract: New 2,4,6 trisubstituted pyridines are useful as laser dyes. These dyes are used in solution with a non-interfering solvent to form lasing media useful in dye lasers. When excited, these dyes have emission wavelengths which cover the spectrum from 410-570 nm. The violet and near ultra-violet regions of the visible spectrum are particularly well-served by the new compounds.
    Type: Grant
    Filed: September 17, 1974
    Date of Patent: October 12, 1976
    Assignee: International Business Machines Corporation
    Inventors: Channabasappa S. Angadiyavar, Rangaswamy Srinivasan