Patents by Inventor Graeme McGibbon

Graeme McGibbon 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).

  • Aqueous compositions
    Patent number: 5286774
    Abstract: An aqueous composition suitable for use as a printing ink is provided which comprises an aqueous solution or emulsion of a film-forming polymer containing a titanium compound which is the reaction product of a titanium orthoester, a beta-diketone and a dihydric alcohol.Preferably the composition also contains a pigment or dye and other conventional printing ink additives.The titanium compounds enhance the adhesion and heat resistance properties of the compositions and in contrast to known additives do not lose their efficacy when the ink is stored for more than a few hours.
    Type: Grant
    Filed: July 27, 1992
    Date of Patent: February 15, 1994
    Assignee: Tioxide Specialties Limited
    Inventors: Graeme McGibbon, Julie E. Robinson
  • Preparation of titanium derivatives
    Patent number: 5260466
    Abstract: A new method for the production of titanium derivatives of carboxylic acids is provided. A liquid or solid carboxylic acid is suspended in an inert liquid diluent in which it is substantially insoluble and reacted with a titanium alkoxide to form a titanium derivative which is also substantially insoluble in the inert diluent.The invention provides a simple method for the production of titanium compounds which are easily transported and can readily be dissolved in water for use, for example, as catalysts and cross-linking agents.
    Type: Grant
    Filed: August 10, 1992
    Date of Patent: November 9, 1993
    Assignee: Tioxide Specialties Limited
    Inventor: Graeme McGibbon
  • Process for the manufacture of color developing material and product
    Patent number: 4409272
    Abstract: Potassium hydroxide or another alkaline potassium compound is used to adjust the pH of an aqueous color developing clay coating composition in the manufacture of color developing material for use in pressure-sensitive or similar copying systems. This reduces the decline in reactivity with time of such material and increases initial print intensity compared with conventional material in which the corresponding sodium compound is used for pH adjustment. Especially good results are obtained where the material being coated is a paper of high acidity such as results from rosin/alum sizing.
    Type: Grant
    Filed: May 13, 1982
    Date of Patent: October 11, 1983
    Assignee: The Wiggins Teape Group Limited
    Inventor: Graeme McGibbon
  • Electrophotographic liquid development method in which a uniform substantial interface contact is maintained
    Patent number: 4023967
    Abstract: A roller device and method for maintaining a uniform surface contact along a line of axial trangency with respect to one or more rigid cooperating surfaces having irregularities, the roller device comprising a rigid solid- or cylindrical-type core loosely circumscribed axially with a flexible sleeve, the space between the core and the sleeve being substantially equidistant and filled with a curable plastic foam material to obtain a uniform contact and nip width when in rotational contact with a cooperating surface.
    Type: Grant
    Filed: April 25, 1974
    Date of Patent: May 17, 1977
    Assignee: Xerox Corporation
    Inventor: Graeme McGibbon