Patents by Inventor Alastair Marr

Alastair Marr 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).

  • Pigment compositions for oil-based lithographic printing inks
    Publication number: 20050250875
    Abstract: Pigment compositions suitable for oil-based lithographic printing inks are provided which comprise besides an organic pigment, a hyperdispersant which is a poly-alkyleneiminepolyester adduct, a synergist agent which is a quaternary ammonium pigment derivative, a solvent which includes aliphatic/aromatic hydrocarbon distillates and vegetable oils, and optionally rosin or a modified rosin. The printing inks prepared from these pigment compositions show outstanding improvements in their rheological properties.
    Type: Application
    Filed: September 18, 2003
    Publication date: November 10, 2005
    Inventors: Alastair Marr, David Williamson, Edward Anderson