Patents by Inventor Heino J. Rohde

Heino J. Rohde 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).

  • Diamond drilling bit for soft and medium hard formations
    Patent number: 4098363
    Abstract: The invention relates to bore hole drills employing spaced shaped cutters in arrays separated by fluid channels in which there are positioned arrays of nozzles suitable for bit cleaning and detritus removal action.
    Type: Grant
    Filed: April 25, 1977
    Date of Patent: July 4, 1978
    Assignee: Christensen, Inc.
    Inventors: Heino J. Rohde, Rainer Juergens
  • Earth-boring drill bits
    Patent number: 4073354
    Abstract: The invention relates to the design of earth boring bits employing shaped preform cutters containing hard abrasive materials such as diamonds.
    Type: Grant
    Filed: November 26, 1976
    Date of Patent: February 14, 1978
    Assignee: Christensen, Inc.
    Inventors: David S. Rowley, Bruce H. Walker, Coy M. Fielder, Heino J. Rohde