JOHN DOUGLAS PETERSON
Pilots at Fir Pl, Salem, OR

5188809, Feb 23, 1993

Aug 31, 1990

7/575817

William A. Crocker - Salem OR
John C. Haygarth - Corvallis OR
Jon A. Riesen - Albany OR
John R. Peterson - Salem OR

Teledyne Industries, Inc. - Albany OR

C01G 4300, C01F 1300, C01F 1500

423 2

A process for separating a feed mixture of zirconium and petroleum coke containing traces amount of radioative materials by flotation process utilizing a plurality of flotation cells. The process comprises grinding the feed mixture, slurrying the ground feed mixture with water, treating the slurry with a flotation agent and a collector for the coke and subjecting the treated slurry to air sparging and agitation to create an overflow and an underflow. The overflow is then filtered to collect substantially zircon-free coke for further processing.

5160482, Nov 3, 1992

Mar 2, 1989

7/318161

Kenneth C. Ash - Corvallis OR
William A. Crocker - Salem OR
John C. Haygarth - Corvallis OR
David R. Lee - Lebanon OR
Donald Morris - Corvallis OR
John R. Peterson - Salem OR
Jon A. Riesen - Albany OR
Robert S. Yih - Salem OR

Teledyne Industries, Inc. - Albany OR

C22B 3400

423 75

A process for the recovery of substantially pure zirconium values from zircon sand which also contains Ra, U, Hf, Pb and other metal values, comprising contacting zircon sand in a chlorinator with a chlorination medium to form an off-gas stream containing chlorides of Zr, Hf, Si, and tract U. The off-gas stream is passed to a condenser to remove volatile Si chlorides and thereby provide a product stream containing condensed chlorides of Zr, Hf and tract U, treating the product stream in acidic aqueous medium in a separation stage to separate the principal Hf values from the principal Zr values. Adjusting the pH of the resulting effluent to between about 3 to about 7 in a second stage to precipitate the trace U values. The residue stream is treated by (A) leaching with an acidic aqueous system to solubilize the trace Ra, Pb and other metal values while settling out the unreacted zircon sand and chlorination medium, and contacting the resultant leach liquor first with Ba++ ions and then with SO. sub. 4 =ions to co-precipitate the barium and trace radium ions as a sulfate complex and the trace lead and other metal ions as their sulfates, or by (B) contacting at least a portion of the residue stream with an aqueous system containing CO. sub. 3 =, SO. sub. 4 =or PO. sub.

4856576, Aug 15, 1989

Sep 2, 1988

7/240001

John R. Peterson - Salem OR

Teledyne Industries, Inc. - Albany OR

B22D 4102

164495

A paint or coating composition which contains only pure Ziroconium containing compounds, and a small amount of NH. sub. 4 (OH). sub. 2 and acid is applied to the vertical walls of a vacuum arc furnace Copper crucible to form a stable, substantially uniform, coating thereon. The Zirconium coating composition of the present invention is free of Aluminum and Aluminum compounds and consists essentially of Zirconium Oxide suspended in a water-based Zirconyl Nitrate gel, to which small amounts of base and acid have been sequentially added. This coating eliminates the introduction of spurious impurities into the surface of the zirconium ingot formed during vacuum are melting of a zirconium compact.

5080880, Jan 14, 1992

Jun 13, 1989

7/365433

John R. Peterson - Salem OR

Teledyne Industries, Inc. - Albany OR

C01B 703, C01G 3300

423481

A process relating to the hydrolysis of metal halides and their production of corresponding metal oxides by the hydrolysis of their chlorides and the calcining of the hydrolysis product is disclosed. Novel aspect including obviating the neutralizing step for the hydrochloric acid by using ammonia and disposing of the resulting ammonium chloride and the two step addition initially of metal halides to water until there is no observable positive heat of reaction and then adding the metal halide in amounts up to the stoichiometric quantity for the hydrolysis product obtained.

6007597, Dec 28, 1999

Feb 27, 1998

9/031608

Richard S. Puopolo - Salem OR
John Roger Peterson - Salem OR
Richard Myers - Albany OR

Teledyne Industries, Inc. - Albany OR

C21B 1110, C22B 100, C01G 3100

75 1014

Niobium, Nb, is refined from FeNb by electron beam melt refining. The amount of the impurities in the FeNb which form suboxides with oxygen is optionally determined. Sufficient oxygen is added to form oxides with these impurities. The electron beam melt refining process is carried out at a sufficiently high temperature and under a sufficiently low vacuum so that the impurities are removed as oxides from the liquid Nb and the purified Nb is recovered. Preferably the oxygen is added as an oxygen-containing compound such as Nb. sub. 2 O. sub. 5. The recovered Nb can be subjected to additional electron beam melt refining cycles to obtain the desired purity.

5322548, Jun 21, 1994

Jun 27, 1991

7/721890

Bernard F. Kieffer - Huntsville AL
John R. Peterson - Salem OR
Timothy R. McQueary - Sweet Home OR
Matthew A. Rossback - Albany OR
Lloyd J. Fenwick - Corvallis OR

Teledyne Industries, Inc. - Albany OR

C01G 3300

75419

Ferroniobium, ferrotantalum and ferrovanadium alloys are hydrogenated to facilitate crushing then nitrided, and then acid-leached to produce a soluble iron nitride leachate and a niobium, tantalum or vanadium nitride residue which residue can be denitrided to yield the metal which can be recovered by melting.

5114890, May 19, 1992

Jun 19, 1989

7/367719

John R. Peterson - Salem OR

Teledyne Industries, Inc. - Albany OR

C04B 3548

501103

A binderless coating comprising substantially pure zirconium oxide suspended in an aqueous zirconyl nitrate and ammonium hydroxide gel.