Lead Compound Patents (Class 106/256)
White lead (Class 106/257)
Red lead (Class 106/258)
  • Pigmented mirror resin coatings
    Patent number: 5753019
    Abstract: Mirror resin backings containing antioxidant pigments which are cyanamide derivatives of metals, are protective backing coatings for glass substrates and mirrors. The resin backings are melamine based resin coatings which provide anti-corrosion protection for the metal layers with metal cyanamide antioxidant pigments.
    Type: Grant
    Filed: April 7, 1997
    Date of Patent: May 19, 1998
    Assignee: Sureguard, Inc.
    Inventors: Mathew Stephen, Ole Gerhard Torgussen
  • Corrosion inhibiting pigment composition
    Patent number: 5558706
    Abstract: A corrosion inhibitor pigment composition is based a solid solution of (Ni.sup.2+ +Co.sup.2+)-bis-hydrogen cyanamide.
    Type: Grant
    Filed: December 15, 1995
    Date of Patent: September 24, 1996
    Assignee: Wayne Pigment Corp.
    Inventor: John Sinko
  • Soluble salt-free contaminant-free pigmented mirror coatings
    Patent number: 5314532
    Abstract: Soluble salt-free, contaminant-free antioxidant pigments which are cyanamide derivatives of metals, are provided in combination with organic resin polymers, as protective mirror backing coatings.
    Type: Grant
    Filed: June 22, 1992
    Date of Patent: May 24, 1994
    Assignee: Sureguard, Inc.
    Inventors: Zephuren J. Hughes, Ole G. Torgussen