Patents by Inventor Sabine Schreiner

Sabine Schreiner 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).

  • Apparatus for measuring the partial pressure of gases or vapors
    Patent number: 4982598
    Abstract: An apparatus comprising a chemically sensitive sensor material, having an electrical resistance or dielectric constant which changes under the effect of the gases or vapors. According to the invention, this sensor material, which comprises either hydrophobic metal complexes, or a mixture of at least one phthalide and at least one acidic compound, serves as resistance or as dielectric material. These sensor materials change their ion mobility and/or their ionic concentration under the effect of gases or vapors, thereby changing their resistance or capacitance. The change in resistance or the change in capacitance can expediently be converted into a frequency change by a multivibrator. Thus, one obtains an especially simple and very effective sensor for gases and vapors.
    Type: Grant
    Filed: December 23, 1989
    Date of Patent: January 8, 1991
    Assignee: Siemens Aktiengesellschaft
    Inventors: Franz Dickert, Heinz Kimmel, Gert Mages, Sabine Schreiner
  • Apparatus for measuring the partial pressure of gases or vapors
    Patent number: 4926156
    Abstract: An apparatus comprising a chemically sensitive sensor material, having an electrical resistance or dielectric constant which changes under the effect of the gases or vapors. According to the invention, this sensor material, which comprises either hydrophobic metal complexes, or a mixture of at least one phthalide and at least one acidic compound, serves as resistance or as dielectric material. These sensor materials change their ion mobility and/or their ionic concentration under the effect of gases or vapors, thereby changing their resistance or capacitance. The change in resistance or the change in capacitance can expediently be converted into a frequency change by a multivibrator. Thus, one obtains an especially simple and very effective sensor for gases and vapors.
    Type: Grant
    Filed: March 14, 1989
    Date of Patent: May 15, 1990
    Assignee: Siemens Aktiengesellschaft
    Inventors: Franz Dickert, Heinz Kimmel, Gert Mages, Sabine Schreiner