Patents by Inventor Luis P. Barrenechea

Luis P. Barrenechea 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).

  • Procedures for the preparation and fabrication of concrete additives produced from natural products
    Patent number: 4961789
    Abstract: A process is disclosed for manufacturing water reducing plasticizing and hardening-retarding plasticizing additives for concrete, using sugarcane derivatives that modify the structural characterisitics of the concrete, resulting in improved plasticity and density and altering of the curing time.
    Type: Grant
    Filed: November 18, 1988
    Date of Patent: October 9, 1990
    Inventor: Luis P. Barrenechea