Patents by Inventor Devendra C. Vashi

Devendra C. Vashi 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).

  • Pretreatment compositions for metals
    Patent number: 4497667
    Abstract: Solid and aqueous compositions containing a Jernstedt salt, a phosphate, a polyphosphate, a silicate, a carbonate, a hydroxide, a sequestrant, an anionic surfactant and a non-ionic surfactant. The aqueous solutions can be used at temperatures as low as 100.degree. F. to effectively clean and condition metallic surfaces prior to the application thereto of a conversion coating.
    Type: Grant
    Filed: July 11, 1983
    Date of Patent: February 5, 1985
    Assignee: Amchem Products, Inc.
    Inventor: Devendra C. Vashi