David Victor Duchane

US Patent:

20020159937, Oct 31, 2002

Filed:

Mar 16, 2001

Appl. No.:

09/810684

Inventors:

David Duchane - Bartlesville OK, US
William Parrish - Bartlesville OK, US
Douglas Hausler - Bartlesville OK, US

Assignee:

PHILLIPS PETROLEUM COMPANY

International Classification:

C01B011/00
C01B013/20
C01B021/36
C01B021/30
C01B021/32
C01C001/18
B01J003/00
B01J012/00

US Classification:

423/219000, 423/239100, 423/237000, 422/188000, 422/129000, 422/242000

Abstract:

Oxygen is removed from natural gas by contacting oxygen-containing natural gas with nitric oxide under conditions sufficient to produce nitrogen dioxide.

US Patent:

43767516, Mar 15, 1983

Filed:

May 29, 1981

Appl. No.:

6/268425

Inventors:

David V. Duchane - Los Alamos NM

Assignee:

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

International Classification:

B29C 2500

US Classification:

264341

Abstract:

Super-smooth rounded or formed articles made of thermoplastic materials including various poly(methyl methacrylate) or acrylonitrile-butadiene-styrene copolymers are produced by immersing the articles into a bath, the composition of which is slowly changed with time. The starting composition of the bath is made up of at least one solvent for the polymer and a diluent made up of at least one nonsolvent for the polymer and optional materials which are soluble in the bath. The resulting extremely smooth articles are useful as mandrels for laser fusion and should be useful for a wide variety of other purposes, for example lenses.

US Patent:

45553130, Nov 26, 1985

Filed:

Oct 21, 1982

Appl. No.:

6/435796

Inventors:

David V. Duchane - Los Alamos NM
Barry L. Barthell - Los Alamos NM

Assignee:

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

International Classification:

C25D 108
B05D 500
B22D 1902

US Classification:

204 3

Abstract:

Hydrophobic cellular material is coated with a thin hydrophilic polymer skin which stretches tightly over the outer surface of the foam but which does not fill the cells of the foam, thus resulting in a polymer-coated foam structure having a smoothness which was not possible in the prior art. In particular, when the hydrophobic cellular material is a specially chosen hydrophobic polymer foam and is formed into arbitrarily chosen shapes prior to the coating with hydrophilic polymer, inertial confinement fusion (ICF) targets of arbitrary shapes can be produced by subsequently coating the shapes with metal or with any other suitable material. New articles of manufacture are produced, including improved ICF targets, improved integrated circuits, and improved solar reflectors and solar collectors. In the coating method, the cell size of the hydrophobic cellular material, the viscosity of the polymer solution used to coat, and the surface tensin of the polymer solution used to coat are all very important to the coating.

US Patent:

46136290, Sep 23, 1986

Filed:

Nov 21, 1984

Appl. No.:

6/673968

Inventors:

David V. Duchane - Los Alamos NM
David L. Cash - Los Alamos NM

Assignee:

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

International Classification:

C08J 912
C08J 914

US Classification:

521 82

Abstract:

A method of forming a foamed thermoplastic polymer. A solid thermoplastic lymer is immersed in an immersant solution comprising a compatible carrier solvent and an infusant solution containing an incompatible liquid blowing agent for a time sufficient for the immersant solution to infuse into the polymer. The carrier solvent is then selectively extracted, preferably by a solvent exchange process in which the immersant solution is gradually diluted with and replaced by the infusant solution, so as to selectively leave behind the infusant solution permanently entrapped in the polymer. The polymer is then heated to volatilize the blowing agent and expand the polymer into a foamed state.

US Patent:

44819994, Nov 13, 1984

Filed:

Feb 23, 1982

Appl. No.:

6/351378

Inventors:

David V. Duchane - Los Alamos NM
Barry L. Barthell - Tesuque NM

Assignee:

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

International Classification:

B22C 702
B22C 924
B22D 2300
B22D 2900

US Classification:

164 6

Abstract:

In a method of forming a thin (

US Patent:

44486227, May 15, 1984

Filed:

Apr 26, 1982

Appl. No.:

6/371745

Inventors:

David V. Duchane - Los Alamos NM
Barry L. Barthell - Tesuque NM

Assignee:

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

International Classification:

B32B 3100
B32B 2742

US Classification:

156155

Abstract:

A composite polymeric film and a method for its use in forming and installing a very thin (