Patents by Inventor Harald Berndt

Harald Berndt 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).

  • Patent number: 6528018
    Abstract: An apparatus and method for handling flowing liquids for analytical purposes such as for introduction of liquid samples in atomic spectroscopy and carrying out a continuous flow digestion process at high temperture and pressure. The appaartus comprises a high-pressure pump for conveying a liquid from a reservoir into a tube having an elongate cavity connected to the high-pressure pump outlet. A heating device is arranged so as to heat the liquid in the cavity to a predetermined temperature and a restrictor is arranged downstream of the cavity at the opposite end of the tube. The restrictor is dimensioned relative to the conveying capacity of the high-pressure pump so that liquid in the cavity is maintained at a pressure which is higher than the saturated vapor pressure of the liquid at the predetermined temperture such that no vapor forms within the cavity.
    Type: Grant
    Filed: September 17, 1996
    Date of Patent: March 4, 2003
    Inventor: Harald Berndt
  • Patent number: 4886359
    Abstract: For nebulizing sample liquid for spectroscopical purposes a liquid to be nebulized is pressurized to a minimum pressure of 30 bar through a high-pressure pump formed as a separate unit, and is nebulized through a nozzle having a smallest flow aperture of less than 5.multidot.10.sup.-9 m.sup.2. The high-pressure pump and the nozzle are interconnected through conduits. In one embodiment the pump takes in pure solvent. The sample is taken in on the high-pressure side through a loop, which is arranged to be connected between pump and nozzle.
    Type: Grant
    Filed: October 11, 1988
    Date of Patent: December 12, 1989
    Inventor: Harald Berndt