Carol Denise Lewis

US Patent:

8394330, Mar 12, 2013

Filed:

Oct 1, 1999

Appl. No.:

09/409644

Inventors:

Nathan S. Lewis - La Canada CA, US
Carol Lewis - La Canada CA, US
Robert Grubbs - South Pasadena CA, US
Gregory Allen Sotzing - Willington CT, US

Assignee:

The California Institute of Technology - Pasadena CA

International Classification:

G01N 27/27
G01N 27/04
G01N 27/26
G01N 27/49

US Classification:

422 98, 73 233, 73 2331, 73 2334, 73 2901, 73 3101, 73 3105, 7333505, 20440301, 20440303, 20440313, 20440315, 204431, 422 88, 422 90

Abstract:

The present invention provides a class of sensors prepared from regions of conducting organic materials and conducting materials that show an increase sensitivity detection limit for amines. The present class of sensors have applications in the detection of spoiled food products and in testing for diseases, such as cholera and lung cancer, which have amines as biomarkers.

US Patent:

54265614, Jun 20, 1995

Filed:

Mar 31, 1994

Appl. No.:

8/221973

Inventors:

Shiao-Ping S. Yen - Altandena CA
Carol R. Lewis - La Canada CA

Assignee:

The United States of America as represented by the United States
National Aeronautics and Space Administration - Washington DC

International Classification:

H01G 9155
H01G 9038

US Classification:

361502

Abstract:

Ultracapacitor and supercapacitor designs wherein two discrete metal film current collectors of the prior art, one for each of the cathode and anode, are replaced by a single thin polymer film. The polymer film is typically several microns thick and metallized on both sides. The thickness of the metallization is varied from several hundred to several thousand. ANG. ngstroms depending upon the particular application. This metallization serves as the positive and negative electrodes (current collectors) which are spatially separated by the polymer dielectric film. The resulting reduction of volume increases the volumetric energy density and the reduction of mass increases the gravimetric energy density. The electrolyte solvent/salt system can be selected to provide useful individual cell voltages as high as 5 volts. The voltage is limited only by the electrolytic stability of the solvent and salt.

US Patent:

54900352, Feb 6, 1996

Filed:

May 28, 1993

Appl. No.:

8/073015

Inventors:

Shiao-Ping S. Yen - Altadena CA
Carol R. Lewis - La Canada CA
Peter J. Cygan - Eatontown NJ
T. Richard Jow - Chatham Township NJ

Assignee:

The United States of America as represented by the Administrator of the
National Aeronautics and Space Administration - Washington DC

International Classification:

H01G 406
H01G 408

US Classification:

361311

Abstract:

Non brittle dielectric films are formed by blending a cyanoresin such as cyanoethyl, hydroxyethyl cellulose (CRE) with a compatible, more crystalline resin such as cellulose triacetate. The electrical breakdown strength of the blend is increased by orienting the films by uniaxial or biaxial stretching. Blends of high molecular weight CRE with high molecular weight cyanoethyl cellulose (CRC) provide films with high dielectric constants.