Patents by Inventor Steven Dunn

Steven Dunn 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).

  • Aqueous sodium salt metal cleaner and method of using same
    Patent number: 5902415
    Abstract: An alkali metal cleaning composition for cleaning metal and for inhibiting corrosion of metal. The composition is composed of an alkali carbonate salt, a surfactant, and a corrosion inhibitor. A preferred corrosion inhibitor is an alkali metal silicate. Additional metal corrosion inhibitors such as a combination of a triazole compound and an alkali metal borate also can be employed. Such alkali carbonate compositions are readily water soluble and remain in solution over prolonged storage periods.
    Type: Grant
    Filed: January 29, 1998
    Date of Patent: May 11, 1999
    Assignee: Church & Dwight Co., Inc.
    Inventors: Steven Dunn, Gale A. Byrnes
  • Use of bicarbonates and carbonates in metal cleaning formulations to inhibit flash rusting
    Patent number: 5853490
    Abstract: Prevention of flash rusting of iron-containing substrates is achieved by contacting the substrates with aqueous solutions containing carbonate and/or bicarbonate salts. The treatment process can be effected during cleaning of the substrates with an aqueous alkaline cleaner or during a post cleaning step such as during rinsing of the substrates subsequent to cleaning.
    Type: Grant
    Filed: February 6, 1996
    Date of Patent: December 29, 1998
    Assignee: Church & Dwight Inc.
    Inventors: Steven Dunn, Steven A. Bolkan, Francis Cala, Anthony Winston
  • General purpose aqueous cleaner
    Patent number: 5834411
    Abstract: An aqueous metal cleaning composition is provided which comprises an alkalinity providing agent such as alkali metal carbonate and/or bicarbonate salts and a low foaming surfactant. The aqueous cleaning solution has specific foam height and foam collapse characteristics, and provides for substantially complete phase separation of a contaminant phase from the aqueous cleaning composition such that there is substantially no aqueous phase drag out into the contaminant phase; and the contaminant phase can be removed easily, and the aqueous cleaning solution can be recovered and reused.
    Type: Grant
    Filed: September 5, 1996
    Date of Patent: November 10, 1998
    Assignee: Church & Dwight Co., Inc
    Inventors: Steven A. Bolkan, Gale A. Byrnes, Steven Dunn, Alfredo Vinci, Antony E. Winston, Patricia L. Phillips
  • Aqueous sodium salt metal cleaner
    Patent number: 5747439
    Abstract: An alkali metal cleaning composition for cleaning metal and for inhibiting corrosion of metal. The composition is composed of an alkali carbonate salt, a surfactant, and a corrosion inhibitor. A preferred corrosion inhibitor is an alkali metal silicate. Additional metal corrosion inhibitors such as a combination of a triazole compound and an alkali metal borate also can be employed. Such alkali carbonate compositions are readily water soluble and remain in solution over prolonged storage periods.
    Type: Grant
    Filed: April 2, 1996
    Date of Patent: May 5, 1998
    Assignee: Church & Dwight Co, Inc.
    Inventors: Steven Dunn, Gale A. Byrnes
  • Aqueous metal cleaner
    Patent number: 5650385
    Abstract: A metal cleaning composition useful in aqueous solution comprises an alkalinity providing agent and a combination of surfactants comprising an ethoxylated thiol surfactant and a nitrogen-containing surfactant which reduces the odor of the thiol-containing surfactant. The aqueous cleaning solutions of this invention are particularly useful in metal parts washers typically placed in garages, service stations and the like in which the cleaning solution can be filtered and reused in the parts washer.
    Type: Grant
    Filed: March 4, 1996
    Date of Patent: July 22, 1997
    Assignee: Church & Dwight Co., Inc.
    Inventors: Steven Dunn, Anthony Winston
  • Metal cleaner with novel anti-corrosion system
    Patent number: 5614027
    Abstract: A metal cleaning composition useful in aqueous solution comprises an alkalinity providing agent and a corrosion inhibitor comprising magnesium ions, zinc ions or both. The corrosion inhibitor is provided in the form of magnesium or zinc compounds such as magnesium oxide or water soluble salts thereof.
    Type: Grant
    Filed: September 23, 1994
    Date of Patent: March 25, 1997
    Assignee: Church & Dwight Co., Inc.
    Inventors: Steven Dunn, Anthony Winston