Dudley L O'Brien

61688258, Jan 2, 2001

Nov 2, 1999

9/432510

Dudley O'Brien - Los Angeles CA
Jerry Vogler - Los Angeles CA
James M. Landry - West Hills CA
Gerald S. Jakubowski - Los Angeles CA

B05D 506

427160

A process for forming a thin blue colored gold deposit, which transmits substantially more visible light than infrared energy. A suitable substrate, usually transparent, is selected and aggressively cleaned to such an extent that water will sheet rather than bead on the surface. The surface is sensitized with a solid phase sensitizing agent such as tin chloride. The surface is either rubbed with a slurry of the solid phase sensitizing agent or it is or it is dipped into an agitated slurry of the agent. Two very dilute reagent solutions are prepared; a reducing solution, and a gold ion containing solution. The reagent solutions are co-mingled and simultaneously projected onto the cleaned surface. The reagent solutions react to form a blue colored gold deposit on the surface. This blue colored deposit passes more visible than infrared energy by a factor of approximately two.

56785844, Oct 21, 1997

Aug 31, 1995

8/509547

Dudley L. O'Brien - Los Angeles CA

McDonnell Douglas Corporation - Huntington Beach CA

B08B 902

134166R

Tubes (12), which can have any variety of cross-section and multiple bends, to be cleaned each have one end portion retained within a fixture (16) by an expanded bladder (42) while pressurized cleaning fluid (52) from conduit (50) passes through the tubes (12). Where no tube (12) is positioned within a particular fixture (16), the cleaning fluid (52) is prevented from moving through the fixture by the expanded bladder (42).

52176002, Jun 8, 1993

May 1, 1992

7/876768

Huong G. Le - Fountain Valley CA
Dudley L. O'Brien - Los Angeles CA

McDonnell Douglas Corporation - Long Beach CA

C25D 1106

205328

Process for anodizing aluminum or its alloys to obtain a surface particularly having high infrared emittance by anodizing an aluminum or aluminum alloy substrate surface in an aqueous sulfuric acid solution at elevated temperature and by a step-wise current density procedure, followed by sealing the resulting anodized surface. In a preferred embodiment the aluminum or aluminum alloy substrate is first alkaline cleaned and then chemically brightened in an acid bath The resulting cleaned substrate is anodized in a 15% by weight sulfuric acid bath maintained at a temperature of 30. degree. C. Anodizing is carried out by a step-wise current density procedure at 19 amperes per square ft. (ASF) for 20 minutes, 15 ASF for 20 minutes and 10 ASF for 20 minutes. After anodizing the sample is sealed by immersion in water at 200. degree. F.