Patents by Inventor Donald J. Guhde
Donald J. Guhde 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).
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Publication number: 20100297354Abstract: Methods and compositions that serve to both darken a zinc or other active metal surface and impart corrosion-resistant properties thereto, are disclosed. The compositions include an aqueous solution containing about 0.1 percent to about 5 percent ammonium chloride and about 0.1 percent to about 5 percent ammonium molybdate. The compositions utilize particular ratios of concentrations of ammonium chloride and ammonium molybdate.Type: ApplicationFiled: November 19, 2009Publication date: November 25, 2010Applicant: METAL COATINGS INTERNATIONAL INC.Inventors: Michelle R. Pearce, Brian G. Straka, Donald J. Guhde, Terry E. Dorsett
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Publication number: 20100266872Abstract: Coatings containing particulate metal alloy are disclosed. The coatings provide corrosion protection to a substrate, such as a metal substrate. The coatings contain zinc-metal-containing alloy in flake form, most particularly an alloy flake of zinc and aluminum. The coating can be from compositions that are water-based or solvent-based. The compositions for providing the coating may also contain a substituent such as a water-reducible organofunctional silane, or a hexavalent-chromium-providing substance, or a titanate polymer, or a silica substance constituent. the coating may desirably be topcoated.Type: ApplicationFiled: April 15, 2010Publication date: October 21, 2010Applicant: NOF METAL COATINGS NORTH AMERICA INC.Inventors: Etienne Georges Maze, Gilbert Louis Lelong, Terry E. Dorsett, Donald J. Guhde, Toshio Nishikawa
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Patent number: 7740947Abstract: Coatings containing particulate metal alloy are disclosed. The coatings provide corrosion protection to a substrate, such as a metal substrate. The coatings contain zinc-metal-containing alloy in flake form, most particularly an alloy flake of zinc and aluminum. The coating can be from compositions that are water-based or solvent-based. The compositions for providing the coating may also contain a substituent such as a water-reducible organofunctional silane, or a hexavalent-chromium-providing substance, or a titanate polymer, or a silica substance constituent. the coating may desirably be topcoated.Type: GrantFiled: February 26, 2007Date of Patent: June 22, 2010Assignee: Metal Coatings International Inc.Inventors: Etienne Georges Maze, Gilbert Louis Lelong, Terry E. Dorsett, Donald J. Guhde, Toshio Nishikawa
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Patent number: 7678184Abstract: Coatings containing particulate metal alloy are disclosed. The coatings provide corrosion protection to a substrate, such as a metal substrate. The coatings contain zinc-metal-containing alloy in flake form, most particularly an alloy flake of zinc and aluminum. The coating can be from compositions that are water-based or solvent-based. The compositions for providing the coating may also contain a substituent such as a water-reducible organofunctional silane, or a hexavalent-chromium-providing substance, or a titanate polymer, or a silica substance constituent. the coating may desirably be topcoated.Type: GrantFiled: October 14, 2008Date of Patent: March 16, 2010Assignee: Metal Coatings International Inc.Inventors: Etienne G. Maze, Gilbert L. Lelong, Terry E. Dorsett, Donald J. Guhde, Toshio Nishikawa
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Patent number: 7641743Abstract: Methods and compositions that serve to both darken a zinc or other active! metal surface and impart corrosion-resistant properties thereto, are disclosed. The compositions include an aqueous solution containing about 0.1 percent to about 5 percent ammonium chloride and about 0.1 percent to about 5 percent ammonium molybdate. The compositions utilize particular ratios of concentrations of ammonium chloride and ammonium molybdate.Type: GrantFiled: June 4, 2004Date of Patent: January 5, 2010Assignee: Metal Coatings International Inc.Inventors: Michelle R. Pearce, Brian G. Straka, Donald J. Guhde, Terry E. Dorsett
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Publication number: 20090078155Abstract: Coatings containing particulate metal alloy are disclosed. The coatings provide corrosion protection to a substrate, such as a metal substrate. The coatings contain zinc-metal-containing alloy in flake form, most particularly an alloy flake of zinc and aluminum. The coating can be from compositions that are water-based or solvent-based. The compositions for providing the coating may also contain a substituent such as a water-reducible organofunctional silane, or a hexavalent-chromium-providing substance, or a titanate polymer, or a silica substance constituent. the coating may desirably be topcoated.Type: ApplicationFiled: October 14, 2008Publication date: March 26, 2009Applicant: METAL COATINGS INTERNATIONAL, INC.Inventors: Etienne G. Maze, Gilbert L. Lelong, Terry E. Dorsett, Donald J. Guhde, Toshio Nishikawa
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Patent number: 7264661Abstract: Coatings containing particulate metal alloy are disclosed. The coatings provide corrosion protection to a substrate, such as a metal substrate. The coatings contain zinc-metal-containing alloy in flake form, most particularly an alloy flake of zinc and aluminum. The coating can be from compositions that are water-based or solvent-based. The compositions for providing the coating may also contain a substituent such as a water-reducible organofunctional silane, or a hexavalent-chromium-providing substance, or a titanate polymer, or a silica substance constituent. The coating may desirably be topcoated.Type: GrantFiled: May 24, 2006Date of Patent: September 4, 2007Assignee: Metal Coatings International Inc.Inventors: Etienne Georges Maze, Gilbert Louis Lelong, Terry E. Dorsett, Donald J. Guhde, Toshio Nishikawa
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Patent number: 7078076Abstract: Coatings containing particulate metal alloy are disclosed. The coatings provide corrosion protection to a substrate, such as a metal substrate. The coatings contain zinc-metal-containing alloy in flake form, most particularly an alloy flake of zinc and aluminum. The coating can be from compositions that are water-based or solvent-based. The compositions for providing the coating may also contain a substituent such as a water-reducible organofunctional silane, or a hexavalent-chromium-providing substance, or a titanate polymer, or a silica substance constituent. The coating may desirably be topcoated.Type: GrantFiled: January 15, 2002Date of Patent: July 18, 2006Assignee: Metal Coatings International Inc.Inventors: Etienne Georges Maze, Gilbert Louis Lelong, Terry E. Dorsett, Donald J. Guhde, Toshio Nishikawa
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Publication number: 20040206266Abstract: Coatings containing particulate metal alloy are disclosed. The coatings provide corrosion protection to a substrate, such as a metal substrate. The coatings contain zinc-metal-containing alloy in flake form, most particularly an alloy flake of zinc and aluminum. The coating can be from compositions that are water-based or solvent-based. The compositions for providing the coating may also contain a substituent such as a water-reducible organofunctional silane, or a hexavalent-chromium-providing substance, or a titanate polymer, or a silica substance constituent. the coating may desirably be topcoated.Type: ApplicationFiled: May 13, 2004Publication date: October 21, 2004Applicant: Metal Coatings International Inc.Inventors: Etienne Georges Maze, Gilbert Louis Lelong, Terry E. Dorsett, Donald J. Guhde, Toshio Nishikawa
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Publication number: 20020119337Abstract: Coatings containing particulate metal alloy are disclosed. The coatings provide corrosion protection to a substrate, such as a metal substrate. The coatings contain zinc-metal-containing alloy in flake form, most particularly an alloy flake of zinc and aluminum. The coating can be from compositions that are water-based or solvent-based. The compositions for providing the coating may also contain a substituent such as a water-reducible organofunctional silane, or a hexavalent-chromium-providing substance, or a titanate polymer, or a silica substance constituent. The coating may desirably be topcoated.Type: ApplicationFiled: January 15, 2002Publication date: August 29, 2002Inventors: Etienne Georges Maze, Gilbert Louis Lelong, Terry E. Dorsett, Donald J. Guhde, Toshio Nishikawa
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Patent number: 6270884Abstract: There is disclosed a water-reducible, chrome-free coating composition for providing corrosion protection to a substrate, such as a metal substrate. The deposited coating film is corrosion-resistant and, for coated articles which are threaded, e.g., steel fasteners, the coating provides a non-thread-filling coating. The coating composition contains particulate metal, such as particulate zinc or aluminum. Although substituents can be separately packaged, the composition is virtually always a one-package coating composition. The composition is water-based, while also containing low-boiling organic liquid. The composition also contains water-reducible organofunctional silane, particularly an epoxy functional silane, as a binding agent. The composition has highly desirable, extended shelf life. The composition can be easily applied in usual manner, such as dip-drain or dip-spin technique, and readily cures at elevated temperature.Type: GrantFiled: August 2, 1999Date of Patent: August 7, 2001Assignee: Metal Coatings International Inc.Inventors: Donald J. Guhde, Terry E. Dorsett, Etienne Maze, Victor V. Germano, Walter H. Gunn
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Patent number: 5868819Abstract: There is disclosed a water-reducible, chromium-free coating composition for providing corrosion protection to a substrate, such as a metal substrate. The deposited coating film is corrosion-resistant and for coated articles which are threaded, e.g., steel fasteners, the coating provides a non-thread-filling coating. The coating composition contains particulate metal, such as particulate zinc or aluminum. Although substituents can be separately packaged, the composition is virtually always a one-package coating composition. The composition contains water-reducible organofunctional silane, particularly an epoxy functional silane, as a binding agent. The composition has highly desirable, extended shelf life. The composition can be easily applied in the usual manner, such as dip-drain or dip-spin technique, and readily cures at elevated temperature.Type: GrantFiled: May 20, 1996Date of Patent: February 9, 1999Assignee: Metal Coatings International Inc.Inventors: Donald J. Guhde, Terry E. Dorsett, Deborah A. O'Brien, Walter H. Gunn, Victor V. Germano
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Patent number: 4971635Abstract: A coating composition is now provided which can have a great number of desirable coating characteristics, when the composition is applied and cured on a metal substrate. Moreover, the coating composition has applicability to a great variety of metal substrates. Such substrates include base metal such as steel as well as metal coated substrates such as zinc electroplated steel. Furthermore, the coating compositions can be useful when applied to substrates sensitive to elevated cure temperature, e.g., annealed steel. In one important aspect the composition can contain hexavalent-chromium-providing substance in mixture with cobalt compound. Particulate metal may be present in the composition. A composition furthermore most desirably contains a special organic acid/alcohol reducing agent combination for the hexavalent chromium. The composition can provide a low-cure coating on a metal substrate, which can then translate into higher production line speeds as when used for coating of metal coils.Type: GrantFiled: July 1, 1988Date of Patent: November 20, 1990Inventors: Donald J. Guhde, Terry E. Dorsett
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Patent number: 4780153Abstract: A coating composition is now provided which can have a great number of desirable coating characteristics, when the composition is applied and cured on a metal substrate. Moreover, the coating composition has applicability to a great variety of metal substrates. Such substrates include base metal such as steel as well as metal coated substrates such as zinc electroplated steel. Furthermore, the coating compositions can be useful when applied to substrates sensitive to elevated cure temperature, e.g., annealed steel. In one important aspect the composition can contain hexavalent-chromium-providing substance in mixture with cobalt compound. Particulate metal may be present in the composition. A composition furthermore most desirably contains a special organic acid/alcohol reducing agent combination for the hexavalent chromium. The composition can provide a low-cure coating on a metal substrate, which can then translate into higher production line speeds as when used for coating of metal coils.Type: GrantFiled: February 6, 1987Date of Patent: October 25, 1988Inventors: Donald J. Guhde, Terry E. Dorsett
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Patent number: 4351675Abstract: An aqueous acidic coating solution for treating zinc, zinc alloy or cadmium surface comprising (A) an oxidizing agent selected from the group consisting of hydrogen peroxide, nitrate ion, nitrite ion, halate ion or mixtures thereof, and (B) a compound having the formula ##STR1## wherein R is hydrogen or an alkyl group of from 1 to 4 carbon atoms.Type: GrantFiled: March 2, 1981Date of Patent: September 28, 1982Assignee: ROHCO, Inc.Inventor: Donald J. Guhde
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Patent number: 4263059Abstract: Aqueous acidic chromate coating solutions are described for treating zinc, zinc alloy, or cadmium surfaces comprising trivalent chromium as substantially the only chromium ion present, fluoride ion and an acid, the trivalent chromium ions comprising a mixture of green and blue trivalent chromium. One method of preparing the green trivalent chromium is by reducing an aqueous solution of hexavalent chromium with sufficient reducing agent to reduce all of the hexavalent chromium to trivalent chromium. The blue trivalent chromium can be prepared by reducing hexavalent chromium with reducing agent and adding an acid and fluoride ion (pH<1). Chromate coatings on zinc, zinc alloy and cadmium surfaces are produced by contacting said surfaces with an aqueous acidic solution of the invention.Type: GrantFiled: December 21, 1979Date of Patent: April 21, 1981Assignee: Rohco, Inc.Inventors: Donald J. Guhde, Dale M. Burdt
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Patent number: 4152176Abstract: The present invention relates to an improved method of preparing titanium-containing phosphate conditioners useful in cleaning and activating the surface of ferrous, zinc or aluminum metal and alloys thereof for subsequent reaction with phosphate coating solutions. The method comprises the steps of(a) preparing a mixture consisting essentially of water, sodium tripolyphosphate, disodium phosphate and a titanium-containing compound and(b) adding said mixture to solid disodium phosphate with mixing whereby a solid titanium phosphate composition is obtained.The invention provides a method for forming a dry activating composition which does not require the application of any energy such as heat to the material. When the solid titanium phosphate compound is dissolved in water to form pretreatment solutions it can be employed successfully for activating metal surfaces in preparation for reaction with phosphate coating solutions.Type: GrantFiled: August 7, 1978Date of Patent: May 1, 1979Assignee: R. O. Hull & Company, Inc.Inventor: Donald J. Guhde