Patents by Inventor Sarfraz Ali

Sarfraz Ali 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).

  • Pre-rinse for phosphating metal surfaces
    Patent number: 5868873
    Abstract: Disclosed is a composition for the pre-rinsing of a metal surface prior to phosphating, a method for preparing the composition, and a method for using the composition to pre-condition the metal surface. The composition is an aqueous suspension containing a water-insoluble manganese phosphate having the formula Mn.sub.x X.sub.y H.sub.2 (PO.sub.4).sub.4.nH.sub.2 O, in which X is a divalent metal ion other than manganese, x+y is 5 and x is a positive number of from 1 to 5, y is 0, 1, 2, 3 or 4, and n is less than 4.
    Type: Grant
    Filed: February 16, 1996
    Date of Patent: February 9, 1999
    Assignee: Brent International PLC
    Inventors: Kevin Brown, Gianfranco Filippo Liberti, Sarfraz Ali, David Thomas Gawne