Audrey R Nelson

US Patent:

6526801, Mar 4, 2003

Filed:

Dec 29, 2000

Appl. No.:

09/751668

Inventors:

Andrian Kouznetsov - Santa Barbara CA
Audrey Nelson - Goleta CA
Brian C. Maddux - Goleta CA
Don Q. Higgins - Santa Barbara CA
Jean A. Nisbet - Goleta CA

Assignee:

Edwards Systems Technology, Inc. - Cheshire CT

International Classification:

G01N 2100

US Classification:

73 103, 702104

Abstract:

A method for compensating for baseline or span drift in gas sensing equipment includes obtaining gas concentration data over a time period and identifying a quiescent period within that time period. The method compares a component concentration corresponding to the quiescent period with one or more additional component concentrations relating to different quiescent periods and calculates an estimated background gas concentration for a predetermined number of time periods. The estimated background concentration is then compared to a preset, or expected, background concentration, and a correction value is calculated. For baseline drift, a correction value is determined to be the difference between the estimated background concentration and the present (expected) background concentration. For span drift, a correction value is determined to be the ratio of the estimated background concentration to the preset (expect) background concentration. Measured concentrations by the gas sensor are then adjusted by the correction value.

US Patent:

7560736, Jul 14, 2009

Filed:

Aug 15, 2005

Appl. No.:

11/203398

Inventors:

Audrey Nelson - Goleta CA, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

H01L 27/15

US Classification:

257 79, 257 83, 257 25, 257 14, 257E33069

Abstract:

A Resonant Cavity Light Emitting Diode (RCLED) device having a first active region having one or more quantum wells disposed within, a first chamber and a second chamber coupled to the first active region and a first reflector and a second reflector coupled to the first and second chambers respectively is disclosed. The RCLED can be optimized to emit radiation in the carbon-dioxide absorption band.

US Patent:

20030034443, Feb 20, 2003

Filed:

May 10, 2002

Appl. No.:

10/141857

Inventors:

Andrian Kouznetsov - Santa Barbara CA, US
Anthony Jenkins - Stevensville MI, US
Audrey Nelson - Goleta CA, US
Rod Valenta - Santa Barbara CA, US

International Classification:

G01V008/00

US Classification:

250/222200

Abstract:

A method for determining a drying cycle includes the steps of measuring absolute humidity within a drying apparatus before the drying apparatus starts a drying cycle and determining a baseline absolute humidity from the measured absolute humidity. Drift is compensated for using the baseline absolute humidity and the absolute humidity is measured within the drying apparatus after the drying apparatus starts the drying cycle. The end of the drying cycle is determined using the measured absolute humidity.