Jon Douglas Cross

US Patent:

47806087, Oct 25, 1988

Filed:

Jan 26, 1988

Appl. No.:

7/150008

Inventors:

Jon B. Cross - Santa Fe NM
David A. Cremers - Los Alamos NM

Assignee:

The United States of America as represented by the United States
Department of Energy - Washington DC

International Classification:

B01D 5944

US Classification:

250281

Abstract:

Laser sustained discharge apparatus for the production of intense beams of high kinetic energy atomic species. A portion of the plasma resulting from a laser sustained continuous optical discharge which generates energetic atomic species from a gaseous source thereof is expanded through a nozzle into a region of low pressure. The expanded plasma contains a significant concentration of the high kinetic energy atomic species which may be used to investigate the interaction of surfaces therewith. In particular, O-atoms having velocities in excess of 3. 5 km/s can be generated for the purpose of studying their interaction with materials in order to develop protective materials for spacecraft which are exposed to such energetic O-atoms during operation in low earth orbit.

US Patent:

20140251186, Sep 11, 2014

Filed:

Mar 6, 2014

Appl. No.:

14/198635

Inventors:

Jon Douglas Cross - Bozeman MT, US

Assignee:

GEOMATRIX INC. - Bozeman MT

International Classification:

C04B 7/24

US Classification:

106709, 106705

Abstract:

The present description is directed to a cement or cementitious mixture that includes fly ash, zinc oxide and borate. Importantly, the cementitious mixture includes greater than 50% of fly ash by weight, or alternatively greater than 75% by weight of fly ash, or still further alternatively greater than 90% or 95% by weight of fly ash. Zinc oxide is incorporated in the cementitious mixture at levels of 2.5% and greater, or alternatively at the amounts of about 5 to 20% zinc oxide. Finally, a borate compound in needed for use as a set retarder.