Patents by Inventor Andreas Hirschi

Andreas Hirschi 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).

  • Multi-well titerplate for instrumental analysis
    Patent number: 5792426
    Abstract: A titerplate for instrumental analysis of liquid samples consists of a plurality of wells in which the walls and bottoms are made of two different materials with different physical properties. This allows the interfacial tension at the surface of the liquid to be controlled in such a way that it is essentially planar, allowing more accurate analysis to be performed on the samples. The bottoms of the wells are preferably made of a transparent material, so that the analysis and observation can be done in the transmission mode. The wells may be formed of radiation-absorbing material to prevent radiation cross talk between radioactive specimens. An overgarment replaceable film or foil having depressions aligned with the titerplate wells may be utilized to prevent contamination of the titerplate by samples and allow the reuse of the titerplate.
    Type: Grant
    Filed: June 24, 1996
    Date of Patent: August 11, 1998
    Assignee: Schweizerische Eidgenossenschaft Vertreten Durch Das AC-Laboratorium Spiez Der Gruppe Rustung
    Inventors: Rudolf Portmann, Andreas Hirschi, Andreas Wellenreiter
  • Multi-well titerplate for instrumental analysis
    Patent number: 5540891
    Abstract: A titerplate for instrumental analysis of liquid samples consists of a plurality of wells in which the walls and bottoms are made of two different materials with different physical properties. This allows the interfacial tension at the surface of the liquid to be controlled in such a way that it is essentially planar, allowing more accurate analysis to be performed on the samples. The bottoms of the wells are preferably made of a transparent material, so that the analysis and observation can be done in the transmission mode.
    Type: Grant
    Filed: October 11, 1994
    Date of Patent: July 30, 1996
    Assignee: Scheizerische Eidgenossenschaft vertreten durch das AC-Laboratorium Spiez der Gruppe fur Rustungsdienste
    Inventors: Rudolf Portmann, Andreas Hirschi, Andreas Wellenreiter