Patents by Inventor John P. Tomlinson

John P. Tomlinson 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 surface coating material prepared by emulsion polymerization
    Patent number: 5204388
    Abstract: A water-based emulsion paint, for example, is formulated with high refractive index opacifying pigment particles, dispersant, and polymer particles in which substantially all of the pigment particles (40) are disjuncted from one another and contained within an attached cluster of polymer particles (41) or have appendant polymer particles to give opacifying units having a nodular outline. Preferably micro-voids are trapped between particles and the dispersant is less than 1% of the pigment by weight.
    Type: Grant
    Filed: March 30, 1992
    Date of Patent: April 20, 1993
    Assignee: Crown Decorative Products Limited
    Inventors: Christopher J. Tonge, John P. Tomlinson, Thomas Graham
  • Vehicle with front and rear wheel steering and a steering system which includes skid simulation and control
    Patent number: 4967859
    Abstract: A vehicle used for training drivers in driving techniques such as skid control has front and rear axles each with steerable wheels. The two signals used to drive motors which control the steering angles of the front and rear wheels respectively are independently generated, may be changed while the vehicle is in motion to simulate a particular event such as a skid and respond to the drivers attempts to control the vehicle.
    Type: Grant
    Filed: November 14, 1988
    Date of Patent: November 6, 1990
    Assignee: Astatic Cars Limited
    Inventor: John P. Tomlinson
  • Foam plastics sheet materials
    Patent number: 4241125
    Abstract: Foam plastics sheet material, such as a wallcovering, has a pronounced decorative relief finish and comprises a substrate web with a foam coating some at least of which is blistered. The blistering is achieved by having two foamable coatings on the web, the lower of which is sacrificed to produce the blistering in the upper. In one method the lower coating is foamed, the upper coating is then applied in its pre-foamed state, and then heated so that the lower coating is sacrificed and the upper coating is foamed and blistered. In another method both coatings are applied in their unfoamed state with the lower coating having a lower foaming temperature than that of the upper coating. Both coatings are then heated together. The lower coating foams and is then sacrificed. The upper coating foams and blisters.
    Type: Grant
    Filed: July 10, 1979
    Date of Patent: December 23, 1980
    Assignee: Reed International Limited
    Inventors: Rodger G. Canning, John P. Tomlinson
  • Foam plastics sheet materials
    Patent number: 4234641
    Abstract: Foam plastics sheet material, such as a wallcovering, has graduated color toning. The material comprises a substrate web having a pigmented base coat and a foam coat in which the pigment has migrated to the surface of the foam coat in varying degrees, or, in some areas, not at all.The foam coat can have at least two thicknesses or can be applied to a pre-embossed substrate web.
    Type: Grant
    Filed: July 10, 1979
    Date of Patent: November 18, 1980
    Assignee: Reed International Limited
    Inventors: David R. Thompson, John P. Tomlinson