Patents by Inventor James Michael Gaidis

James Michael Gaidis 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).

  • Roll press grinding aid for granulated blast furnace slag
    Patent number: 5977224
    Abstract: A grinding aid and an enhanced roll press method of grinding granulated blast-furnace slag by treating the slag feed of the roll press with from about 0.002 to 0.2 weight percent of polyacrylic acid or its alkali metal salt in combination with up to about 4 weight percent water.
    Type: Grant
    Filed: January 9, 1998
    Date of Patent: November 2, 1999
    Assignee: W.R. Grace & Co.-Conn.
    Inventors: Josephine Ho-wah Cheung, James Michael Gaidis
  • Process of using roll press grinding aid for granulated blast furnace slag
    Patent number: 5720796
    Abstract: A grinding aid and an enhanced roll press method of grinding granulated blast-furnace slag by treating the slag feed of the roll press with from about 0.002 to 0.2 weight percent of polyacrylic acid or its alkali metal salt in combination with up to about 4 weight percent water.
    Type: Grant
    Filed: August 8, 1995
    Date of Patent: February 24, 1998
    Assignee: W. R. Grace & Co.-Conn.
    Inventors: Josephine Ho-wah Cheung, James Michael Gaidis
  • Control of expansion in concrete due to alkali silica reaction
    Patent number: 5656075
    Abstract: A cement composition including spodumene which has been heated to at least 1000.degree. C. which is capable of inhibiting expansion of the concrete due to the alkali-silica reaction. The present invention also provides a method of reducing expansion in cement compositions.
    Type: Grant
    Filed: May 10, 1995
    Date of Patent: August 12, 1997
    Assignee: W. R. Grace & Co.-Conn.
    Inventors: James Michael Gaidis, Ellis Martin Gartner
  • Method for corrosion inhibition of reinforced bridge structures
    Patent number: 4092109
    Abstract: A method of use of calcium nitrite in corrosion control in hydraulic cements that contain metal pieces or structures, and in certain related uses, e.g., snow removal from alite cement bridge decking.
    Type: Grant
    Filed: June 28, 1976
    Date of Patent: May 30, 1978
    Assignee: W. R. Grace & Co.
    Inventors: Arnold Morry Rosenberg, James Michael Gaidis