Patents by Inventor Zafir A. Abdo

Zafir A. Abdo 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).

  • Rapid prototyping of ceramic articles
    Patent number: 8575513
    Abstract: A method for forming ceramic articles for prototypes that involves the use of metal particles or metal-coated ceramic particles that are formed into ceramic articles using a laser engineered net shaping process. The metal particles or metal coating on the ceramic particles facilitates bonding between the ceramic particles to enable quick manufacture of ceramic articles using the laser engineered net shaping process. The ceramic articles may be ceramic core prototypes and may be used in a variety of different industries.
    Type: Grant
    Filed: July 6, 2006
    Date of Patent: November 5, 2013
    Assignee: Siemens Energy, Inc.
    Inventors: Zafir A. Abdo, Ahmed Kamel
  • Rapid prototyping of ceramic articles
    Publication number: 20080008894
    Abstract: A method for forming ceramic articles for prototypes that involves the use of metal particles or metal-coated ceramic particles that are formed into ceramic articles using a laser engineered net shaping process. The metal particles or metal coating on the ceramic particles facilitates bonding between the ceramic particles to enable quick manufacture of ceramic articles using the laser engineered net shaping process. The ceramic articles may be ceramic core prototypes and may be used in a variety of different industries.
    Type: Application
    Filed: July 6, 2006
    Publication date: January 10, 2008
    Inventors: Zafir A. Abdo, Ahmed Kamel
  • Transient liquid phase bonding to cold-worked surfaces
    Patent number: 7165712
    Abstract: A joint having bond line grains that nucleate in the joint region and grow into the adjoined solid substrates. The resulting bond line grains have a size that is greater than a thickness of a molten region. The surfaces of the substrates are cold worked to a desired degree of residual stress prior to the bonding process so that the recrystallization of the substrate surface necessary for the grains to grow into the substrates results in a reduction in the local free energy.
    Type: Grant
    Filed: October 23, 2003
    Date of Patent: January 23, 2007
    Assignee: Siemens Power Generation, Inc.
    Inventors: Zafir Abdo, Patricia Bezerra, Paul J. Zombo
  • Welding of gamma'-strengthened superalloys
    Publication number: 20060219758
    Abstract: A method of welding ??-strengthened superalloys. The methods improve the weldability of these superalloys by creating areas having lower amounts of ??-forming elements, resulting in stronger welds. In one method, a vacuum heat treatment is used to create ??-depleted zones having reduced amounts of ??-forming elements. A post weld heat treatment may then be used. In another method, a ?-stabilizing element, such as Cr or Ni, is deposited on the area to be welded. Again, a post weld heat treatment may then be used.
    Type: Application
    Filed: March 29, 2005
    Publication date: October 5, 2006
    Inventor: Zafir Abdo
  • Transient liquid phase bonding to cold-worked surfaces
    Publication number: 20050087584
    Abstract: A joint (32) having bond line grains (28) that nucleate in the joint region (32) and grow into the adjoined solid substrates (12, 14). The resulting bond line grains have a size that is greater than a thickness (T) of a molten region (15). The surfaces of the substrates are cold worked to a desired degree of residual stress prior to the bonding process so that the recrystallization of the substrate surface necessary for the grains to grow into the substrates results in a reduction in the local free energy.
    Type: Application
    Filed: October 23, 2003
    Publication date: April 28, 2005
    Inventors: Zafir Abdo, Patricia Bezerra, Paul Zombo