Patents by Inventor John Sand

John Sand 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).

  • Device and method for comminution
    Patent number: 6024307
    Abstract: A device for comminuting raw materials like glass, rock, rubber buffings and the like, is disclosed. Raw material is propelled outwardly towards violent impact against a circular wall and then lifted by rapidly rising air for separation and possible return for further propelling outwardly towards impact against the circular wall.
    Type: Grant
    Filed: November 23, 1998
    Date of Patent: February 15, 2000
    Assignee: Ashford Holdings Limited
    Inventors: John Sand, Jon Emmerson Martin, Jeremy Jonathan Clarke-Ames
  • Device and method for comminution
    Patent number: 5839671
    Abstract: A device for comminuting raw materials like glass, rock, rubber buffings and the like, is disclosed. Raw material is propelled outwardly towards violent impact against a circular wall and then lifted by rapidly rising air for separation and possible return for further propelling outwardly towards impact against the circular wall.
    Type: Grant
    Filed: October 19, 1996
    Date of Patent: November 24, 1998
    Assignee: Spectrasonic Disintegration Equipment Corp.
    Inventors: John Sand, Jon Emmerson Martin, Jeremy Jonathan Clarke-Ames