Patents by Inventor Karim Djotni

Karim Djotni 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).

  • Temperature invariant infrared filter
    Patent number: 10451784
    Abstract: A narrow bandpass filter that may be used in a mid-infrared sensor for monitoring a species, which may be a component of a fluid or a solid material. The filter comprises a cavity comprising a low refractive index material. By providing a high ratio of low refractive index material in the filter with respective to high refractive index material, the filter is configured so that wavelength transmission remains constant with varying temperature. Materials used for the low and/or high refractive index provide a temperature invariant filter that transmits mid-infrared spectra without serious degradation.
    Type: Grant
    Filed: September 9, 2015
    Date of Patent: October 22, 2019
    Assignees: SCHLUMBERGER TECHNOLOGY CORPORATION, UNIVERSITY OF READING
    Inventors: Timothy Jones, Nathan Lawrence, Gary Hawkins, Richard Sherwood, Karim Djotni
  • TEMPERATURE INVARIANT INFRARED FILTER
    Publication number: 20180321428
    Abstract: A narrow bandpass filter that may be used in a mid-infrared sensor for monitoring a species, which may be a component of a fluid or a solid material. The filter comprises a cavity comprising a low refractive index material. By providing a high ratio of low refractive index material in the filter with respective to high refractive index material, the filter is configured so that wavelength transmission remains constant with varying temperature. Materials used for the low and/or high refractive index provide a temperature invariant filter that transmits mid-infrared spectra without serious degradation.
    Type: Application
    Filed: September 9, 2015
    Publication date: November 8, 2018
    Inventors: Timothy Jones, Nathan Lawrence, Gary Hawkins, Richard Sherwood, Karim Djotni