Patents by Inventor Alec Tindal

Alec Tindal 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).

  • Process for controlling the brightness of paper products
    Publication number: 20030188393
    Abstract: A process for shading white paper characterized in that a mixture comprising at least one direct dye or pigment and at least one optical brightener is used, is claimed as well as the mixture and the paper dyed with this method.
    Type: Application
    Filed: February 26, 2003
    Publication date: October 9, 2003
    Inventor: Alec Tindal
  • Polycondensation products and their use as dyeing aids
    Patent number: 6307007
    Abstract: New water-soluble polycondensation products are obtained by reaction of polyfunctional amines with cyanamide, its derivatives or polymers in the presence of sulfamic acid. They are excellent fixing agents which improve fastness properties of dyeings with substantive dyestuffs on cellulose fiber materials, paper, board and non-wovens.
    Type: Grant
    Filed: May 14, 1999
    Date of Patent: October 23, 2001
    Assignee: Clariant Finance (BVI) Limited
    Inventors: Jürg Heller, Alec Tindal