Patents by Inventor Roger Anthony Allen

Roger Anthony Allen 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).

  • Patent number: 5807621
    Abstract: Casting paper of a desired surface texture or finish for use in the manufacture of artificial leather is produced by heating the polymer coating 1 of a polymer-coated paper 2 to a temperature sufficient to melt the polymer and then cooling the polymer coating from its molten state to a solid state as it passes through a nip between an embossing roll 3 having a surface configuration corresponding to said desired surface texture or finish and a backing roll 4, thereby to impart the surface configuration of the embossing roll to the polymer-coated paper. The polymer is preferably polyolefinic, for example poly (4-methyl-1-pentene) or a polypropylene/polyethylene blend. An anti-curl back-coat, for example of polyvinyl alcohol, can be applied after the embossing operation.
    Type: Grant
    Filed: October 18, 1996
    Date of Patent: September 15, 1998
    Assignee: The Wiggins Teape Group Limited
    Inventors: Nicholas John Kite, Peter Sinclair, Roger Anthony Allen, Neil Harvey Clifford
  • Patent number: 4061109
    Abstract: A smoothing roll for use with apparatus for coating a web of paper or other sheet material, particularly for smoothing coatings at low wet coatweights of silicone compositions applicable in their natural state without the use of a solvent, has a soft elastomeric covering the smoothing surface of which is pitted and is substantially impermeable to liquid coating compositions.
    Type: Grant
    Filed: March 9, 1976
    Date of Patent: December 6, 1977
    Assignee: Wiggins Teape Limited
    Inventor: Roger Anthony Allen
  • Patent number: 3951102
    Abstract: In coating apparatus of the kind in which a roll dips into a bath of liquid coating material and applies the material to a transfer roll which in turn transfers the material to an applicator arranged to apply the material to a web passing between the applicator roll and a backing roll the applicator roll is independently rotated in the same direction as the transfer roll and the backing roll is rotated in the same direction as the applicator roll.
    Type: Grant
    Filed: November 15, 1973
    Date of Patent: April 20, 1976
    Assignee: Wiggins Teape Research & Development Limited
    Inventor: Roger Anthony Allen