David Lee Blake

US Patent:

7113265, Sep 26, 2006

Filed:

Mar 17, 2004

Appl. No.:

10/808704

Inventors:

Philippe C. Sarrazin - Palo Alto CA, US
David F. Blake - Los Altos CA, US

Assignee:

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

International Classification:

G01N 21/64
G01N 21/65
G01N 21/85

US Classification:

356 73, 356301, 356317, 356244, 356440

Abstract:

Method and system for causing a powder sample in a sample holder to undergo at least one of three motions (vibration, rotation and translation) at a selected motion frequency in order to present several views of an individual grain of the sample. One or more measurements of diffraction, fluorescence, spectroscopic interaction, transmission, absorption and/or reflection can be made on the sample, using light in a selected wavelength region.

US Patent:

39773230, Aug 31, 1976

Filed:

Jun 2, 1975

Appl. No.:

5/583076

Inventors:

Gerald L. Pressman - San Jose CA
David E. Blake - Woodside CA
Hugh F. Frohbach - Sunnyvale CA

Assignee:

ElectroPrint, Inc. - Cupertino CA

International Classification:

G03G 1306

US Classification:

101426

Abstract:

A system for electrostatic printing including a corona source and electrode for coulombs/m. sup. a substantially uniform stream of ions in the direction of a print receiving medium and a multilayer apertured modulator interposed in the ion stream for modulating the cross-sectional flow density of ions in the stream in accordance with a pattern to be reproduced. A cloud of substantially uncharged liquid aerosol ink particles is introduced adjacent the print receiving medium whereby the modulated ion stream selectively impinges upon and charges particles in the cloud which are thereby accelerated and deposited on the print receiving medium in accordance with the pattern to be reproduced. The average surface charge density on liquid aerosol particles in the cloud is no greater than about 1. times. 10. sup. -. sup. 6 coulombs/m. sup.

US Patent:

54917387, Feb 13, 1996

Filed:

Mar 15, 1993

Appl. No.:

8/033306

Inventors:

David F. Blake - Redwood City CA
Charles Bryson - Santa Clara CA
Friedemann Freund - San Francisco CA

Assignee:

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

International Classification:

G01N 2320

US Classification:

378 71

Abstract:

An x-ray diffraction apparatus for use in analyzing the x-ray diffraction pattern of a sample. The apparatus includes a beam source for generating a collimated x-ray beam having one or more discrete x-ray energies, a holder for holding the sample to be analyzed in the path of the beam, and a charge-coupled device having an array of pixels for detecting, in one or more selected photon energy ranges, x-ray diffraction photons produced by irradiating such a sample with said beam. The CCD is coupled to an output unit which receives input information relating to the energies of photons striking each pixel in the CCD, and constructs the diffraction pattern of photons within a selected energy range striking the CCD.