Patents by Inventor Margaret E. Logan

Margaret E. Logan 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).

  • Novel polymethine dyes and imaging compositions
    Patent number: 4855213
    Abstract: Polymethine dyes are disclosed containing an acidic electron accepting terminal nucleus comprised of an isocyano group. The dyes are useful as spectral sensitizers in ultravioilet responsive imaging compositions.
    Type: Grant
    Filed: April 20, 1988
    Date of Patent: August 8, 1989
    Assignee: Eastman Kodak Company
    Inventor: Margaret E. Logan
  • Novel polymethine dyes and UV absorbers and imaging materials for their use
    Patent number: 4839260
    Abstract: Polymethine dyes and ultraviolet absorbers are disclosed containing a basic electron donating terminal nucleus and an acidic electron accepting terminal nucleus satisfying the formula: ##STR1## where Ar is independently in each occurrence an aromatic group andD is an oxy or amino group.These polymethines are useful in imaging materials.
    Type: Grant
    Filed: June 30, 1987
    Date of Patent: June 13, 1989
    Assignee: Eastman Kodak Company
    Inventor: Margaret E. Logan
  • Novel polymethine dyes and UV absorbers containing a triarylborylisocyano group and imaging compositions containing these dyes
    Patent number: 4839274
    Abstract: Polymethine dyes and ultraviolet absorbers are disclosed containing a basic electron donating terminal nucleus and an acidic electron accepting terminal nucleus comprised of a triarylborylisocyano group. The dyes are useful in imaging materials.
    Type: Grant
    Filed: June 30, 1987
    Date of Patent: June 13, 1989
    Assignee: Eastman Kodak Company
    Inventor: Margaret E. Logan