Patents by Inventor Mario Luis Macia

Mario Luis Macia 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: 6565678
    Abstract: Weld metals suitable for joining high strength, low alloy steels are provided. These weld metals have microstructures of acicular ferrite interspersed in a hard constituent, such as lath martensite, yield strengths of at least about 690 MPa (100 ksi), and DBTTs lower than about −50° C. (−58° F.) as measured by a Charpy energy versus temperature curve. These weld metals include about 0.04 wt % to about 0.08 wt % carbon; about 1.0 wt % to about 2.0 wt % manganese; about 0.2 wt % to about 0.7 wt % silicon; about 0.30 wt % to 0.80 wt % molybdenum; about 2.3 wt % to about 3.5 wt % nickel; about 0.0175 wt % to about 0.0400 wt % oxygen, and at least one additive selected from the group consisting of (i) up to about 0.04 wt % zirconium, and (ii) up to about 0.02 wt % titanium.
    Type: Grant
    Filed: August 2, 2001
    Date of Patent: May 20, 2003
    Assignee: ExxonMobil Upstream Research Company
    Inventors: Douglas P. Fairchild, Jayoung Koo, Narasimha-Rao V. Bangaru, Mario Luis Macia, Danny Lee Beeson, Adnan Ozekcin
  • Publication number: 20020043305
    Abstract: Weld metals suitable for joining high strength, low alloy steels are provided. These weld metals have microstructures of acicular ferrite interspersed in a hard constituent, such as lath martensite, yield strengths of at least about 690 MPa (100 ksi), and DBTTs lower than about −50° C. (−58° F.) as measured by a Charpy energy versus temperature curve. These weld metals include about 0.04 wt % to about 0.08 wt % carbon; about 1.0 wt % to about 2.0 wt % manganese; about 0.2 wt % to about 0.7 wt % silicon; about 0.30 wt % to 0.80 wt % molybdenum; about 2.3 wt % to about 3.5 wt % nickel; about 0.0175 wt % to about 0.0400 wt % oxygen, and at least one additive selected from the group consisting of (i) up to about 0.04 wt % zirconium, and (ii) up to about 0.02 wt % titanium.
    Type: Application
    Filed: August 2, 2001
    Publication date: April 18, 2002
    Applicant: EXXONMOBIL UPSTREAM RESEARCH COMPANY
    Inventors: Douglas P. Fairchild, Jayoung Koo, Narasimha-Rao V. Bangaru, Mario Luis Macia, Danny Lee Beeson, Adnan Ozekcin