MARK ALAN WILKINSON
Pilots at Tabor Hl Rd, Lincoln Center, MA

2009022, Sep 17, 2009

May 12, 2005

11/596500

Andrew M. Cameron - Derbyshire, GB
Michael James Strelbisky - Burlington, CA
Andrew Peter Richardson - Clinton NJ, US
John Batham - East Riding of Yorkshire, GB
Mark Alan Wilkinson - Lincoln MA, US

C22B 9/05, C22B 5/00, C21B 7/16

75708, 75414, 266265

A method of refining molten metal in a vessel by the reaction of oxygen with impurities in the molten metal comprises the steps of: a) ejecting at least one primary jet of oxygen from a lance positioned above the molten metal into the molten metal to react with impurities therein and to form a layer of molten slag; b) continuing to eject the primary jet of oxygen from the lance and thereby causing the primary bet of oxygen to pass through the slag layer into the molten metal; c) ejecting a plurality of secondary jets of oxygen from the lance, the secondary jet of oxygen travelling for a distance separately from the primary jet of oxygen; and d) entraining the secondary jets of oxygen into the primary jet of oxygen upstream of the entry of the primary jet of oxygen into the molten metal. A lance head for use in the method has at least one primary oxygen port and a plurality of secondary oxygen ports, the axis of the second oxygen port diverging in the direction of flow from the primary oxygen port at an angle of up to 45°. The method and lance head are particularly of use in the Basic Oxygen Steelmaking (BOS) process. If desired, a stirring gas such as argon may be mixed with the primary oxygen.

7387770, Jun 17, 2008

Aug 26, 2005

11/162055

Mark Alan Wilkinson - Lincoln MA, US
Joseph Hurd - Sandy Creek NY, US
David Stone - Bridgewater NJ, US

General Chemical Performance Products Inc. - Parsippany NJ

C01G 49/00

423558, 423146, 423DIG 2

A process is provided for the production of liquid ferric sulfate from finely-divided ferric oxide, sulfuric acid and water in a reaction system comprising at least one closed reaction vessel at temperatures ranging from about 120° C. to about 150° C. and pressures from about 25 psi to about 70 psi. Iron oxide streams are fed countercurrent to the ferric sulfate reaction product stream and to the sulfuric acid and water feeds. The continuity of the reaction is effected by re-circulating fractions while withdrawing a fraction of the liquid ferric sulfate having a trivalent iron concentration of at least 10% from the reaction vessel. Yield and efficiency are provided by controlling the rate of iron ore, sulfuric acid and specific gravity and by counter current cycling the waste stream from the reaction through the dilution water and use of a polymeric settling agent to remove unreacted iron content from the digester output.

2008027, Nov 6, 2008

Jul 9, 2008

12/169861

Michael Strelbisky - Burlington, CA
Andrew Peter Richardson - Clinton NJ, US
Mark Alan Wilkinson - Lincoln MA, US
Andrew Miller Cameron - Matlock, GB
John Kelvin Batham - Cherry Burton, GB

C21C 5/00

266 44

A method of controlling total jet pressure from the head of a metallurgical lance for introducing gas into a volume of metal in a vessel. The lance head has at least one ejector, which has a nozzle located in a bore of the lance head and has an annular gas passage between at least one nozzle and the wall of the bore. The method proceeds by adjusting the annular gas velocity from a first Mach number to a second mach number to effect change of the total jet pressure.

2007005, Mar 15, 2007

Sep 9, 2005

11/222567

Michael Strelbisky - Burlington, CA
Andrew Richardson - Clinton NJ, US
Mark Wilkinson - Lincoln MA, US
Andrew Cameron - Matlock, GB
John Batham - Cherry Burton, GB

C21C 5/32

266225000

A method of controlling total jet pressure from the head of a metallurgical lance for introducing gas into a volume of metal in a vessel. The lance head has at least one ejector, which has a nozzle located in a bore of the lance head and has an annular gas passage between at least one nozzle and the wall of the bore. The method proceeds by adjusting the annular gas velocity from a first Mach number to a second mach number to effect change of the total jet pressure.

2012026, Oct 25, 2012

Oct 21, 2010

13/504838

Ravi Kanjolia - North Andover MA, US
Chris Platts - Littleton MA, US
Nam Nguyen - Everett MA, US
Mark Wilkinson - Lincoln MA, US

SIGMA-ALDRICH CO. LLC - St. Louis MO

C23C 16/455

137 1, 118719

A solid precursor delivery assembly generally includes a container having upper and lower portions and chambers defined within the container, including an inlet chamber, an outlet chamber, and first and second precursor chambers. The first and second precursor chambers are configured for holding precursor material within the container. Sintered frits are fixedly coupled and sealed to an interior portion of the container, and define at least part of the chambers within the container. At least one of the sintered frits is configured for retaining precursor material thereon within the first precursor chamber, and at least one of the sintered frits is configured for retaining precursor material thereon within the second precursor chamber. An inlet is coupled to the container for delivering carrier gas into the container, and an outlet is coupled to the container for use in removing vaporized precursor material and carrier gas from the container.

7438848, Oct 21, 2008

Jun 30, 2004

10/881489

Michael James Strelbisky - Burlington, CA
Andrew Peter Richardson - Clinton NJ, US
Mark Alan Wilkinson - Lincoln MA, US

The BOC Group, Inc. - Murray Hill NJ

C21C 7/00

266225

A metallurgical lance for introducing gas into a volume of molten material in a furnace includes a head having a bore extending therethrough, a mounting assembly at the head in the bore, and a nozzle detachably secured to the mounting assembly by a connection, the nozzle adapted to coact with a tool releasably engagable with the nozzle to insert and withdraw same from the lance head through the bore without dismantling the nozzle.