Patents by Inventor Jiangbo Ouyang

Jiangbo Ouyang 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).

  • Low phosphorous, low etch cleaner and method
    Patent number: 5472630
    Abstract: Compositions and methods for cleaning and etching an aluminum surface with a low etch, low phosphate alkaline cleaner solution are disclosed. The preferred composition employs a stable combination of an alkali metal hydroxide, gluconic acid, a detergent source, an aluminum sequestrant, an oil emulsifier, a defoamer, and a hydrotrope.
    Type: Grant
    Filed: March 24, 1994
    Date of Patent: December 5, 1995
    Assignee: Betz Laboratories, Inc.
    Inventors: Jiangbo Ouyang, Edward A. Rodzewich, William L. Harpel
  • Composition for a method of monitoring dried-in-place non-chrome polyacrylamide based treatments for metals
    Patent number: 5451270
    Abstract: A process for measuring the coating weight of a dried-in-place non-chromate polyacrylamide/surfactant based conversion coating is disclosed. An ammonium hexafluorotitanate tracer added to such a conversion coating was found to not adversely affect coating properties. The tracer was found to remain proportional to the polymer matrix when the coating was analyzed by X-ray fluorescence.
    Type: Grant
    Filed: September 16, 1994
    Date of Patent: September 19, 1995
    Assignee: Betz Laboratories, Inc.
    Inventors: Jiangbo Ouyang, William L. Harpel
  • Composition and process for coating metals
    Patent number: 5412011
    Abstract: A non-chromium conversion coating for metal surfaces such as aluminum, steel, galvanized steel and zinc-aluminum steel consisting of an aqueous solution of an anionic polyacrylamide copolymer, an inorganic silicate and an organofunctional silane.
    Type: Grant
    Filed: October 15, 1993
    Date of Patent: May 2, 1995
    Assignee: Betz Laboratories, Inc.
    Inventors: Brenda S. Morris, Jiangbo Ouyang, David W. Reichgott
  • Method of monitoring dried-in-place non-chrome polyacrylamide based treatments for aluminum
    Patent number: 5401333
    Abstract: A process for measuring the coating weight of a dried-in-place non-chromate polyacrylamide/surfactant based conversion coating is disclosed. An ammonium hexafluorotitanate tracer added to such a conversion coating was found to not adversely affect coating properties. The tracer was found to remain proportional to the polymer matrix when the coating was analyzed by X-ray fluorescence.
    Type: Grant
    Filed: March 15, 1994
    Date of Patent: March 28, 1995
    Assignee: Betz Laboratories, Inc.
    Inventors: Jiangbo Ouyang, William L. Harpel
  • Non-chromium passivation method and composition for galvanized metal surfaces
    Patent number: 5344505
    Abstract: A substantially chromium free composition and method for passivating a galvanized metal surface is disclosed. The passivation treatment which may be rinsed or dried-in-place includes phosphoric acid, boric acid and optionally molybdic acid.
    Type: Grant
    Filed: August 16, 1993
    Date of Patent: September 6, 1994
    Assignee: Betz Laboratories, Inc.
    Inventors: Jiangbo Ouyang, William L. Harpel
  • Visible dried-in-place non-chrome treatment for aluminum
    Patent number: 5292378
    Abstract: A method of providing color to a dried-in-place, non-chromate conversion coating is provided. The addition of a phthalo green pigment and optionally a nonionic surfactant to an aqueous, dried-in-place conversion coating treatment solution provides for a colored conversion coating without adversely effecting the corrosion resistance or adhesion properties of the conversion coating.
    Type: Grant
    Filed: March 26, 1993
    Date of Patent: March 8, 1994
    Assignee: Betz Laboratories, Inc.
    Inventors: Jiangbo Ouyang, Bruce V. Haberle, Philip D. Deck, William L. Harpel