Patents by Inventor Coorg Rangaswamy Prasad

Coorg Rangaswamy Prasad 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).

  • Airborne tunable mid-IR laser gas-correlation sensor
    Patent number: 7965391
    Abstract: A method and apparatus for measuring target gas concentrations in an atmosphere. The method and apparatus emit in the atmosphere a laser beam tuned to a molecular absorption line of a target gas, receive a reflected signal affected by gas absorption of the target gas in the atmosphere, divide and direct the received signal into a first optical path and a second optical path including in one of the paths a correlation gas cell filled with a predetermined concentration of the target gas, detect transmitted signals through the first optical path and the second optical path, and calculate a target gas concentration by comparing a first signal transmitted through the first optical path to a second signal transmitted through the second optical path.
    Type: Grant
    Filed: December 22, 2009
    Date of Patent: June 21, 2011
    Assignee: Science & Engineering Services, Inc.
    Inventors: Coorg Rangaswamy Prasad, Bo Lin, Hyo Sang Lee
  • Airborne tunable mid-IR laser gas-correlation sensor
    Patent number: 7884937
    Abstract: A method and apparatus for measuring target gas concentrations in an atmosphere. The method and apparatus emit in the atmosphere a laser beam tuned to a molecular absorption line of a target gas, receive a reflected signal affected by gas absorption of the target gas in the atmosphere, divide and direct the received signal into a first optical path and a second optical path including in one of the paths a correlation gas cell filled with a predetermined concentration of the target gas, detect transmitted signals through the first optical path and the second optical path, and calculate a target gas concentration by comparing a first signal transmitted through the first optical path to a second signal transmitted through the second optical path.
    Type: Grant
    Filed: April 19, 2007
    Date of Patent: February 8, 2011
    Assignee: Science & Engineering Services, Inc.
    Inventors: Coorg Rangaswamy Prasad, Bo Lin, Hyo Sang Lee
  • AIRBORNE TUNABLE MID-IR LASER GAS-CORRELATION SENSOR
    Publication number: 20100163733
    Abstract: A method and apparatus for measuring target gas concentrations in an atmosphere. The method and apparatus emit in the atmosphere a laser beam tuned to a molecular absorption line of a target gas, receive a reflected signal affected by gas absorption of the target gas in the atmosphere, divide and direct the received signal into a first optical path and a second optical path including in one of the paths a correlation gas cell filled with a predetermined concentration of the target gas, detect transmitted signals through the first optical path and the second optical path, and calculate a target gas concentration by comparing a first signal transmitted through the first optical path to a second signal transmitted through the second optical path.
    Type: Application
    Filed: December 22, 2009
    Publication date: July 1, 2010
    Applicant: Science & Engineering Services, Inc.
    Inventors: Coorg Rangaswamy Prasad, Bo Lin, Hyo Sang Lee
  • AIRBORNE TUNABLE MID-IR LASER GAS-CORRELATION SENSOR
    Publication number: 20080259340
    Abstract: A method and apparatus for measuring target gas concentrations in an atmosphere. The method and apparatus emit in the atmosphere a laser beam tuned to a molecular absorption line of a target gas, receive a reflected signal affected by gas absorption of the target gas in the atmosphere, divide and direct the received signal into a first optical path and a second optical path including in one of the paths a correlation gas cell filled with a predetermined concentration of the target gas, detect transmitted signals through the first optical path and the second optical path, and calculate a target gas concentration by comparing a first signal transmitted through the first optical path to a second signal transmitted through the second optical path.
    Type: Application
    Filed: April 19, 2007
    Publication date: October 23, 2008
    Applicant: Science & Engineering Services, Inc.
    Inventors: Coorg Rangaswamy PRASAD, Bo Lin, Hyo Sang Lee