Patents by Inventor Alfonso V. Alvarez

Alfonso V. Alvarez 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).

  • Roof tile design and construction
    Patent number: 6247284
    Abstract: A concrete or other roofing tile is provided which simulates wood shake roofing, and which may be used in either a direct deck or batten configuration. The simulated wood shake configuration includes an angled cut portion by means of a butt treatment, and also includes the use of an elongate medial slot which has a rectangular configuration.
    Type: Grant
    Filed: November 2, 1999
    Date of Patent: June 19, 2001
    Assignee: Boral Lifetile, Inc.
    Inventors: Alfonso V. Alvarez, Woods W. Burnett, Eric Martin Hahn, Walter Arthur Schreifels, Joseph Edward Smith, Patrick Gene Sullivan
  • Roof tile design and construction
    Patent number: 5974756
    Abstract: A concrete or other roofing tile is provided which simulates wood shake roofing, and which may be used in either a direct deck or batten configuration. The simulated wood shake configuration includes an angled cut portion by means of a butt treatment, and also includes the use of an elongate medial slot which has a rectangular configuration.
    Type: Grant
    Filed: April 15, 1997
    Date of Patent: November 2, 1999
    Assignee: Boral Industries, Inc.
    Inventors: Alfonso V. Alvarez, Woods W. Burnett, Eric Martin Hahn, Walter Arthur Schreifels, Joseph Edward Smith, Patrick Gene Sullivan
  • Composition useful for lightweight roof tiles and method of producing said composition
    Patent number: 5603758
    Abstract: Compositions useful for making lightweight roof tiles. The compositions comprise in percent by weight: between about 2.0 to 4.1 latex (solids basis), between about 20.0 to 28.0 cement, between about 28.0 to 55.0 lightweight aggregate, between about 9.0 to 15.0 water, between about 5.0 to 35.0 standard weight aggregate such as sand, between about 0.0 to 8.0 filler such as limestone, and between 0.0 to 1.5 accelerating additive such as calcium chloride. Methods for making the compositions e.g. into lightweight roof tiles, are also disclosed.
    Type: Grant
    Filed: October 6, 1995
    Date of Patent: February 18, 1997
    Assignee: Boral Concrete Products, Inc.
    Inventors: Walter A. Schreifels, Jr., Alfonso V. Alvarez, Luciano Lopez, Joseph E. Smith
  • Roof tile
    Patent number: D452920
    Type: Grant
    Filed: March 3, 1999
    Date of Patent: January 8, 2002
    Assignee: Boral Lifetile, Inc.
    Inventors: Alfonso V. Alvarez, Woods W. Burnett, Eric Martin Hahn, Walter Arthur Schreifels, Joseph Edward Smith, Patrick Gene Sullivan
  • Roof tile
    Patent number: D411316
    Type: Grant
    Filed: April 15, 1997
    Date of Patent: June 22, 1999
    Assignee: Boral Lifetile, Inc.
    Inventors: Alfonso V. Alvarez, Woods W. Burnett, Eric Martin Hahn, Walter Arthur Schreifels, Joseph Edward Smith, Patrick Gene Sullivan