Patents by Inventor Duncan Hird

Duncan Hird 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).

  • PUMPABLE CEMENTITIOUS GROUT SYSTEM FOR USE IN THE PRODUCTION OF UNDERGROUND ROOF-SUPPORT SYSTEMS AND OTHER LOAD-BEARING STRUCTURES
    Publication number: 20110174194
    Abstract: A pumpable grout mixture includes a first grout stream including a hydraulically active cementitious material suitable for cementing in underground applications and water, and a second grout stream including a pozzalanic material and an inorganic gelling agent wherein the two grout streams are combined into a grout mixture to form a self-supporting load bearing structure.
    Type: Application
    Filed: March 6, 2008
    Publication date: July 21, 2011
    Inventor: Duncan Hird
  • Method and product for absorbing and consolidating nuisance water or slurry accumulations
    Publication number: 20100189507
    Abstract: Nuisance water or slurry accumulations on roadways, such as underground mine roadways, are absorbed and consolidated by providing flexible porous containers that are filled with a mixture of a dry cementitious material and absorbent particulate material. The filled containers are applied to an area of nuisance water or slurry accumulation whereby the accumulation is absorbed by the mixture and consolidates through hydration to provide a dried load bearing roadway surface.
    Type: Application
    Filed: January 28, 2010
    Publication date: July 29, 2010
    Inventor: Duncan Hird