Patents by Inventor Carlos E. Aguirre

Carlos E. Aguirre 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).

  • Straight hearth furnace for titanium refining
    Patent number: 5972282
    Abstract: A cold hearth furnace for refining of selected metals, such as titanium, is described. The furnace includes a melting hearth and a transport hearth arranged linearly. A pair of barriers partially block the flow of molten materials to mix it, allowing impurities to vaporize and preventing splattering of the material in the melting hearth from contaminating the final product.
    Type: Grant
    Filed: May 27, 1998
    Date of Patent: October 26, 1999
    Assignee: Oregon Metallurgical Corporation
    Inventors: Carlos E. Aguirre, Steven H. Reichman, Leonard C. Hainz, II
  • Vacuum processing of particulate reactive metal
    Patent number: 5171357
    Abstract: In the particular embodiments described in the specification, a vacuum furnace includes a hearth having a melting region and a refining region and a particulate metal supply tube for conveying particulate metal to one side of the melting region. Three water-cooled shield members surround the other sides of the melting region so that metal ejected from the particulate metal deposited in the melting region by explosive vaporization of inclusions in the metal is intercepted by the shield members.
    Type: Grant
    Filed: December 16, 1991
    Date of Patent: December 15, 1992
    Assignee: Axel Johnson Metals, Inc.
    Inventors: Carlos E. Aguirre, Howard R. Harker
  • High capacity electron beam cold hearth furnace
    Patent number: 4823358
    Abstract: In the particular embodiment of an electron beam furnace arrangement described in the specification, an electron beam gun unit is supported on rails for motion between two hearth and casting units, each having a lid to seal the unit when the electron beam gun unit is not in place. Sealing covers are also provided for the molds associated with the casting units. A common pump, preheating and hearth cooling unit communicates with each of the hearth and casting units so that, when one of the hearth and casting units is in use, the other unit can be cleaned and maintained and then outgassed and preheated in preparation for transfer of the electron beam gun unit from the other hearth and casting unit.
    Type: Grant
    Filed: July 28, 1988
    Date of Patent: April 18, 1989
    Assignee: 501 Axel Johnson Metals, Inc.
    Inventors: Carlos E. Aguirre, Howard R. Harker
  • Method of alloying aluminum and calcium into lead
    Patent number: 4808376
    Abstract: A method of alloying powdered aluminum into lead to form lead-calcium-aluminum alloys with relatively high recoveries and low standard deviations of recoveries. The method comprises melting lead, heating the lead, injecting simultaneously calcium-containing granules and aluminum powder into the lead under the surface. The alloying material preferably has a total calcuim content of between about 65% and 80% by weight and a total aluminum content of between about 35% and 20%. The material is preferably injected into an injection bell to hold the alloying material under the surface of the lead.
    Type: Grant
    Filed: August 10, 1987
    Date of Patent: February 28, 1989
    Assignee: The Doe Run Company
    Inventors: Anthony W. Worcester, Kai Ravnborg, Carlos E. Aguirre