Patents by Inventor Angel Abelleira

Angel Abelleira 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).

  • Additive for production of highly workable mortar cement
    Patent number: 6172147
    Abstract: Mortar cement additives provide workability while retaining strength by employing a multi-stage polymer comprising a hydrophobically-modified, ionically-soluble polymer stage, the polymer being soluble at a pH of 6 and above; and an air-entraining agent. The additives also employ, as optional ingredients, set retarding agents and superplasticizers. Examplary methods of the invention involve addition of the multi-stage polymer and an air entraining agent to the mortar cement, preferably during intergrinding of Portland cement in the mill. Cement compositions comprising the polymer and an air-entraining agent are also disclosed.
    Type: Grant
    Filed: May 5, 1998
    Date of Patent: January 9, 2001
    Assignee: W. R. Grace & Co.-Conn.
    Inventors: Angel Abelleira, John Hallock
  • Additive for production of highly workable mortar cement
    Patent number: 5782972
    Abstract: Mortar cement additives provide workability while retaining strength by employing a multi-stage polymer comprising a hydrophobically-modified, ionically-soluble polymer stage, the polymer being soluble at a pH of 6 and above; and an air-entraining agent. The additives also employ, as optional ingredients, set retarding agents and superplasticizers. Examplary methods of the invention involve addition of the multi-stage polymer and an air entraining agent to the mortar cement, preferably during intergrinding of Portland cement in the mill. Cement compositions comprising the polymer and an air-entraining agent are also disclosed.
    Type: Grant
    Filed: March 21, 1997
    Date of Patent: July 21, 1998
    Assignee: W.R. Grace & Co.-Conn.
    Inventors: Angel Abelleira, John Hallock
  • Cement admixture capable of inhibiting drying shrinkage and method of using same
    Patent number: 5603760
    Abstract: A cement admixture composition composed of at least one oxyalkylene compound and an ammonium salt of tall oil fatty acid.
    Type: Grant
    Filed: September 18, 1995
    Date of Patent: February 18, 1997
    Assignee: W. R. Grace & Co.-Conn.
    Inventors: Neal S. Berke, Michael P. Dallaire, Angel Abelleira