Patents by Inventor Joaquin M. Otero

Joaquin M. Otero 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).

  • Sensor for monitoring solute in a liquid stream
    Patent number: 5287168
    Abstract: The sensor system monitors solutes in a liquid stream by analyzing the amount of light absorbed in a liquid in a particular wavelength band. The sensor system is arranged for selectability of the type of fiber used for transmission and adjustability of the liquid gap length in the liquid so that individual installations can be arranged with optimum characteristics for sensing particular chemical species in solution by absorption spectroscopy.
    Type: Grant
    Filed: June 7, 1993
    Date of Patent: February 15, 1994
    Assignee: Hughes Aircraft Company
    Inventors: David Poucher, Chilengi Madhusudhan, Joaquin M. Otero
  • Ambient ether vapor testing apparatus and method
    Patent number: 5168746
    Abstract: A portion of the ambient air, including the selected vapor such as the ether vapor fraction, is first cryogenically liquefied for concentration in a collecting vessel (12). Thereafter, the concentrated liquefied fraction is boiled off and passed through gas chromatography column (34) to separate the fractions in the vapor stream. The selected vapor fraction is eluted at the temperature, and its concentration is detected by thermal conductivity detector (42) so that the concentration of the selected vapor in the environment is signaled.
    Type: Grant
    Filed: June 3, 1991
    Date of Patent: December 8, 1992
    Assignee: Hughes Aircraft Company
    Inventors: Chilengi P. Madhusudhan, Joaquin M. Otero