Patents by Inventor Bashir M. Ahmed

Bashir M. Ahmed 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).

  • Patent number: 10323314
    Abstract: This invention relates to an autodeposition bath composition comprising a nitrogen containing compound, said bath being suitable for generating a uniform autodeposition coating on two or more of ferrous, aluminum, magnesium and zinciferous multi-metal substrate surfaces, treated either sequentially or simultaneously. The invention also provides autodeposition concentrate compositions for use in the bath, methods of making and using the concentrate and bath, as well as metal articles comprising an autodeposition coating according to the invention.
    Type: Grant
    Filed: June 15, 2012
    Date of Patent: June 18, 2019
    Assignee: Henkel AG & Co. KGaA
    Inventors: Girdhari Kumar, Manesh Nadupparambil Sekharan, Bashir M. Ahmed, Xueting Qiu, Omar L. Abu-Shanab, Brian J. Marvin
  • Publication number: 20180304306
    Abstract: Autodeposition coating compositions that deposit uncured coatings, on metallic surfaces of a substrate, which are curable at oven temperatures of less than 130° C., are provided as well as autodeposition methods, compositions and components for depositing such autodeposition coatings. More particularly, the invention relates to autodeposition coatings that cure at temperatures lower than conventional autodeposition coatings, while achieving chemical and corrosion performance comparable to higher temperature cure autodeposition coatings, as well as being directed to autodeposition coating compositions possessing improved storage stability and coating thermal stability, and articles of manufacture having cured and uncured autodeposited coatings deposited thereon.
    Type: Application
    Filed: June 28, 2018
    Publication date: October 25, 2018
    Inventors: Libin Du, Bashir M. Ahmed, Umesh D. Harkal, Omar Lutfi Abu-Shanab
  • Patent number: 9895717
    Abstract: A coated article comprising a metal surface, a first layer of an uncured autodeposition coating and a second uncured paint layer deposited sequentially on the surface without intermediate curing of the autodeposition coating, a process of co-curing said autodeposition coating and paint layer or layers, and a cured coated article having chemical bonds between the cured autodeposition coating layer and at least the cured paint layer immediately adjacent to the cured autodeposition coating layer.
    Type: Grant
    Filed: August 2, 2013
    Date of Patent: February 20, 2018
    Assignee: Henkel AG & Co. KGaA
    Inventors: Omar L. Abu-Shanab, Michael Inch, Bashir M. Ahmed, Christopher G. Weller, Derek W. Smith
  • Patent number: 9115442
    Abstract: Coating bath compositions and processes useful in depositing organic polymeric coatings on metal substrates at low voltages are provided, the baths comprising one or more dispersed organic film forming polymers; and an etchant; wherein the principle film forming polymer is stabilized in the bath by the presence of anionic surfactant, but can be readily anodically deposited under low voltage. The invention also relates to processes of depositing a coating and metal substrates coated using the baths and processes of the invention.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: August 25, 2015
    Assignee: Henkel AG & Co. KGaA
    Inventors: Manesh Nadupparambil Sekharen, Shawn E. Dolan, Brian J. Marvin, Bashir M. Ahmed, John D. McGee, Omar L. Abu-Shanab, Derek A. Hickey
  • Publication number: 20140262791
    Abstract: Coating bath compositions and processes useful in depositing organic polymeric coatings on metal substrates at low voltages are provided, the baths comprising one or more dispersed organic film forming polymers; and an etchant; wherein the principle film forming polymer is stabilized in the bath by the presence of anionic surfactant, but can be readily anodically deposited under low voltage. The invention also relates to processes of depositing a coating and metal substrates coated using the baths and processes of the invention.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 18, 2014
    Inventors: Manesh N. SEKHAREN, Shawn E. DOLAN, Brian J. MARVIN, Bashir M. AHMED, John D. McGEE, Omar L. ABU-SHANAB, Derek A. HICKEY
  • Publication number: 20140234641
    Abstract: This invention relates to an autodeposition bath composition comprising a nitrogen containing compound, said bath being suitable for generating a uniform autodeposition coating on two or more of ferrous, aluminum, magnesium and zinciferous multi-metal substrate surfaces, treated either sequentially or simultaneously. The invention also provides autodeposition concentrate compositions for use in the bath, methods of making and using the concentrate and bath, as well as metal articles comprising an autodeposition coating according to the invention.
    Type: Application
    Filed: June 15, 2012
    Publication date: August 21, 2014
    Applicant: Henkel AG & Co. KGaA
    Inventors: Girdhari Kumar, Manesh Nadupparambil Sekharan, Bashir M. Ahmed, Xueting Qiu, Omar L. Abu-Shanab, Brian Marvin
  • Publication number: 20130316171
    Abstract: A coated article comprising a metal surface, a first layer of an uncured autodeposition coating and a second uncured paint layer deposited sequentially on the surface without intermediate curing of the autodeposition coating, a process of co-curing said autodeposition coating and paint layer or layers, and a cured coated article having chemical bonds between the cured autodeposition coating layer and at least the cured paint layer immediately adjacent to the cured autodeposition coating layer.
    Type: Application
    Filed: August 2, 2013
    Publication date: November 28, 2013
    Applicant: Henkel AG & Co. KGaA
    Inventors: Omar L. Abu-Shanab, Michael Inch, Bashir M. Ahmed, Christopher G. Weller, Derek W. Smith
  • Patent number: 8518493
    Abstract: A coated article comprising a metal surface, a first layer of an uncured autodeposition coating and a second uncured paint layer deposited sequentially on the surface without intermediate curing of the autodeposition coating, a process of co-curing said autodeposition coating and paint layer or layers, and a cured coated article having chemical bonds between the cured autodeposition coating layer and at least the cured paint layer immediately adjacent to the cured autodeposition coating layer.
    Type: Grant
    Filed: July 7, 2010
    Date of Patent: August 27, 2013
    Assignee: Henkel AG & Co. KGaA
    Inventors: Omar Abu-Shanab, Michael Inch, Bashir M. Ahmed, Christopher G. Weller, Derek W. Smith
  • Publication number: 20110003161
    Abstract: A coated article comprising a metal surface, a first layer of an uncured autodeposition coating and a second uncured paint layer deposited sequentially on the surface without intermediate curing of the autodeposition coating, a process of co-curing said autodeposition coating and paint layer or layers, and a cured coated article having chemical bonds between the cured autodeposition coating layer and at least the cured paint layer immediately adjacent to the cured autodeposition coating layer.
    Type: Application
    Filed: July 7, 2010
    Publication date: January 6, 2011
    Applicant: Henkel AG & Co. KGaA
    Inventors: Omar Abu-Shanab, Michael Inch, Bashir M. Ahmed, Christopher G. Weller, Derek W. Smith
  • Publication number: 20090236288
    Abstract: A method and apparatus are described for removing iron cations and/or zinc cations from an autodeposition coating bath by passing a limited number of bed volumes through a column containing a gel type SAC IEX resin when iron cations are to be removed and passing a substantially larger number of bed volumes through the column when zinc cations are to be removed. To prevent clogging when zinc cations are being removed the direction of the flow through the column is periodically reversed.
    Type: Application
    Filed: January 21, 2009
    Publication date: September 24, 2009
    Applicant: Henkel kGaA
    Inventors: Bashir M. Ahmed, William E. Fristad, William G. Kozak
  • Publication number: 20080131728
    Abstract: An aqueous, acidic zincating composition comprising: zinc cations; fluoride anions; and a carboxylic acid having at least one additional —OH substituent is provided that is useful in a process of making a corrosion resistant article comprising contacting an article having an aluminum surface with the zincating composition and thereafter coating the article with an autodeposition coating.
    Type: Application
    Filed: November 30, 2007
    Publication date: June 5, 2008
    Inventors: Manesh Nadupparambil Sekharan, Bashir M. Ahmed, Omar L. Abu-Shanab, William E. Fristad, Brian J. Marvin
  • Publication number: 20040050794
    Abstract: A method and apparatus are described for removing iron cations and/or zinc cations from an autodeposition coating bath by passing a limited number of bed volumes through a column containing a gel type SAC IEX resin when iron cations are to be removed and passing a substantially larger number of bed volumes through the column when zinc cations are to be removed. To prevent clogging when zinc cations are being removed the direction of the flow through the column is periodically reversed.
    Type: Application
    Filed: June 18, 2003
    Publication date: March 18, 2004
    Inventors: Bashir M Ahmed, William E Fristad, William G Kozak
  • Patent number: 6143365
    Abstract: The susceptibility to heat degradation of an autodeposited coating in which the principal organic constituents are copolymers of vinylidene chloride in which vinylidene chloride residues constitute at least half the weight of the total binder phase in the autodeposited coating is improved if the wet autodeposited coatings are rinsed, before being later dried and cured, with a water-based liquid rinse that comprises dissolved phosphate ions in a concentration that corresponds stoichiometrically to at least 0.5 g/l of tripolyphosphate ions. The water-based liquid rinse preferably has a strongly alkaline pH and also comprises dissolved organic molecules that are effective chelating agents for dissolved iron cations by reason of having in each molecule at least two carboxyl, carboxylate, and/or other hydroxy moieties.
    Type: Grant
    Filed: June 3, 1999
    Date of Patent: November 7, 2000
    Assignee: Henkel Corporation
    Inventor: Bashir M. Ahmed
  • Patent number: 5945170
    Abstract: The use of selected cation exchange resins to remove dissolved multivalent cations ions such as iron, zinc, and chromium from used autodeposition compositions permits reuse of the autodeposition compositions without the need for added surfactant and without developing any undesirable graininess or other texture in the coatings formed. Iminodiacetate cation exchange resins are very effective for removing iron ions when they are the only multivalent ions to be removed, and can be efficiently regenerated with 0.5 to 4% by weight aqueous hydrofluoric acid. By proper choice of other cation exchange resins and operating conditions, zinc can be selectively extracted from autodeposition baths containing both iron and zinc, and either iron or zinc can be selectively displaced from the loaded ion exchange resin.
    Type: Grant
    Filed: November 17, 1997
    Date of Patent: August 31, 1999
    Assignee: Henkel Corporation
    Inventors: William G. Kozak, Christina M. Haas, Bashir M. Ahmed
  • Patent number: 5786030
    Abstract: A reaction rinse containing strong alkali, betaine surfactants, and a complexing agent for iron enhances the gloss of a dried and cured autodeposited coating that is contacted with the reaction rinse while still wet, particularly if the autodeposited coating consists predominantly of a copolymer of vinylidene chloride.
    Type: Grant
    Filed: November 12, 1996
    Date of Patent: July 28, 1998
    Assignee: Henkel Corporation
    Inventors: Bashir M. Ahmed, Douglas A. Brown, William E. Fristad
  • Patent number: 5545319
    Abstract: Apparatus for use in an ion exchange unit or column comprising a riser pipe, a port coupled to one end of said pipe, a first rigid cylinder having apertures therein mounted concentrically on the pipe, a port coupled to the space between the pipe and said cylinder, a mesh sleeve concentrically mounted about the cylinder, a sieve mounted about the mesh sleeve, a second rigid cylinder concentric with the pipe and near its outer end, a second mesh sleeve mounted about said second rigid cylinder and a sieve bag containing the second mesh sleeve. The aperture size in said sieve material is only sufficiently fine to prevent the passage of ion exchange resin beads.
    Type: Grant
    Filed: September 8, 1994
    Date of Patent: August 13, 1996
    Assignee: Henkel Corporation
    Inventors: Robert G. Hart, Bashir M. Ahmed, Carlos Gonzales, William G. Kozak
  • Patent number: 5538644
    Abstract: An apparatus and method is provided for automated periodic removal of metal ions and contaminants from a chemical bath comprising a latex solution containing charged latex particles and having an acidic pH, used for forming a coating by autodeposition. The system includes a tank containing a chemical bath, an ion exchange column for removing the metal ion contaminants, circulating pump, metal composition sensors, and equipment for regeneration of the ion exchange column. The system particularly includes a filter located at the inlet to the ion exchange column for removing solid particulates, including coagulated latex and debris from the coating solution, while permitting the uncoagulated latex particles to pass through to the ion exchange column.
    Type: Grant
    Filed: October 11, 1994
    Date of Patent: July 23, 1996
    Assignee: Henkel Corporation
    Inventors: William G. Kozak, Bashir M. Ahmed
  • Patent number: 5500460
    Abstract: The quality of coating in autodeposition from solutions in which the coating is predominantly derived from epoxy resins can be improved in two ways, which can be used jointly or separately: A blocked isocyanate is used as cross linking agent for the epoxy resin, and a surfactant that prevents the occurrence of phase separation during drying of the coating is used. Preferably the surfactant is a fluoroaliphatic polymer ester.
    Type: Grant
    Filed: May 2, 1995
    Date of Patent: March 19, 1996
    Assignee: Henkel Corporation
    Inventors: Bashir M. Ahmed, Rohitha M. Jayasuriya, Thomas R. Hopkins
  • Patent number: 5409737
    Abstract: The use of chelating type cation exchange resins, particularly those with iminodiacetic acid functionality, to remove dissolved multivalent cations such as iron, zinc, and chromium from used autodeposition compositions permits reuse of the autodeposition compositions without the need for added surfactant and without developing any undesirable graininess or other texture in the coatings formed. The cation exchange resins can be efficiently regenerated with 0.5 to 4% by weight aqueous hydrofluoric acid.
    Type: Grant
    Filed: August 5, 1993
    Date of Patent: April 25, 1995
    Assignee: Henkel Corporation
    Inventors: William G. Kozak, Bashir M. Ahmed
  • Patent number: 5385758
    Abstract: Process for forming an autodeposition coating on a metallic substrate by applying an autodepositing composition from a motile source thereof such as by spraying or by treating the surface with a continuous stream of the autodepositing composition.
    Type: Grant
    Filed: December 30, 1992
    Date of Patent: January 31, 1995
    Assignee: Henkel Corporation
    Inventor: Bashir M. Ahmed