Patents by Inventor David Agresti

David Agresti 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).

  • Pumpably verifiable fluid fiber compositions
    Patent number: 6790275
    Abstract: The invention relates to fiber compositions that can be pumped and metered in the fashion of fluid chemical admixtures into a concrete mix, thereby enabling the fibers to be dispensed by concrete ready-mix plant operators who can provide verification of fiber administration and dosage. The fibers, particularly plastic shrinkage control fibers having large cumulative surface area, are suspended in an aqueous or non-aqueous medium such that their surface area is already wetted out, thereby virtually assuring that substantial uniform fiber dispersion can be achieved without clumping and the delay that is usually required by fiber intermixing.
    Type: Grant
    Filed: March 29, 2002
    Date of Patent: September 14, 2004
    Assignee: W. R. Grace & Co.-Conn.
    Inventors: Michael B. Macklin, Anandakumar Ranganathan, Klaus-Alexander Rieder, Ding Feng Shen, Michael Buchanan, Randall Fierke, Jessica Verrill, Donald Indge, David Agresti, Paul Westgate
  • Pumpably verifiable fluid fiber compositions
    Publication number: 20030056695
    Abstract: The invention relates to fiber compositions that can be pumped and metered in the fashion of fluid chemical admixtures into a concrete mix, thereby enabling the fibers to be dispensed by concrete ready-mix plant operators who can provide verification of fiber administration and dosage. The fibers, particularly plastic shrinkage control fibers having large cumulative surface area, are suspended in an aqueous or non-aqueous medium such that their surface area is already wetted out, thereby virtually assuring that substantial uniform fiber dispersion can be achieved without clumping and the delay that is usually required by fiber intermixing.
    Type: Application
    Filed: March 29, 2002
    Publication date: March 27, 2003
    Applicant: W.R. GRACE & CO.-CONN.
    Inventors: Michael B. Macklin, Anandakumar Ranganathan, Klaus-Alexander Rieder, Ding Feng Shen, Michael Buchanan, Randall Fierke, Jessica Verrill, Donald Indge, David Agresti, Paul Westgate