Patents by Inventor Helfrid Kunath

Helfrid Kunath 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 for crushing calculi in the urinary bladder
    Patent number: 4227532
    Abstract: A device for crushing calculi in the urinary bladder, comprising a bundle of elongate, flexible lithotriptors which are accommodated in a ureter catheter and on whereto reciprocating movements can be imparted by a drive system.
    Type: Grant
    Filed: April 3, 1978
    Date of Patent: October 14, 1980
    Assignee: U.S. Philips Corporation
    Inventors: Karl H. Bluhm, Helfrid Kunath
  • Matrix printer head having a removable assembly
    Patent number: 4044878
    Abstract: A matrix printer head having a plurality of mutually parallel, straight printing pins guided within at least two mating, semi-cylindrical rods. The rod outer surfaces guide armatures which are connected to the printing pins.Components which are subject to wear, such as the printing pins and the armatures, are easily replaced by removing the rods from the housing of the printer.
    Type: Grant
    Filed: June 14, 1976
    Date of Patent: August 30, 1977
    Assignee: U.S. Philips Corporation
    Inventor: Helfrid Kunath