Patents by Inventor William Ross Wayment

William Ross Wayment 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).

  • Method of mine backfilling and material therefor
    Patent number: 4101333
    Abstract: A method of backfilling in underground mine operations by a mill tailings slurry which is dewatered to provide a material with a controlled water content to permit the dewatered material to be used as a backfill without requiring any substantial dewatering after placement and which material can, when desired, be mixed with selected quantities of cement to provide a mortar for backfilling or surface covering.
    Type: Grant
    Filed: May 23, 1977
    Date of Patent: July 18, 1978
    Assignee: Joy Manufacturing Company
    Inventor: William Ross Wayment
  • Method of mine backfilling and material therefor
    Patent number: 4059963
    Abstract: A method of backfilling in underground mine operations by a mill tailings slurry which is dewatered to provide a material with a controlled water content to permit the dewatered material to be used as a backfill without requiring any substantial dewatering after placement and which material can, when desired, be mixed with selected quantities of cement to provide a mortar for backfilling or surface covering.
    Type: Grant
    Filed: August 19, 1976
    Date of Patent: November 29, 1977
    Assignee: Joy Manufacturing Company
    Inventor: William Ross Wayment