Patents by Inventor Oscar Oehler

Oscar Oehler 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: 5285677
    Abstract: A method and apparatus for selective detection of gases and vapors uses paramagnetic and electric dipole moments. An inhomogeneous magnetic field (31, 32, 33, 33') or an inhomogeneous electric field (41, 42, 43, 43', 44, 44') through the gas sample causes molecule enrichment in the acoustically sensitive range (34) of an ultrasonic resonator (1). The ultrasonic resonator has mutually opposed ultrasonic transducers operating as a transmitter (2) and a receiver (3). Because of the change in acoustic velocity, the molecule enrichment causes detuning of the ultrasonic resonator (1) and hence a change in signal at the receiving transducer (3). The method is particularly sensitive to the detection of oxygen.
    Type: Grant
    Filed: June 17, 1992
    Date of Patent: February 15, 1994
    Inventor: Oscar Oehler
  • Patent number: 5141331
    Abstract: A process and apparatus for the photothermal and/or calorimetric investigation of gaseous, liquid and solid measuring material is based on the detuning of an ultrasonic resonator (1). The latter has an ultrasonic transmitter (2) and an ultrasonic receiver (3), which face one another. The signal from the receiver is analyzed by an analyzer (5) as to its amplitude or phase position which gives, as a result of the temperature dependence of the sonic velocity, information on thermal changes in the ultrasonic resonator designed as a gas cell or calorimeter. The present apparatus makes it possible to detect gases or to calorimetrically investigate the material to be investigated, particularly light-conducting elements (5), such as light fibers.
    Type: Grant
    Filed: October 18, 1989
    Date of Patent: August 25, 1992
    Inventors: Oscar Oehler, Hans Melchior