GB2359096B - Apparatus and process for the production of fine powders - Google Patents

Apparatus and process for the production of fine powders

Info

Publication number
GB2359096B
GB2359096B GB0003081A GB0003081A GB2359096B GB 2359096 B GB2359096 B GB 2359096B GB 0003081 A GB0003081 A GB 0003081A GB 0003081 A GB0003081 A GB 0003081A GB 2359096 B GB2359096 B GB 2359096B
Authority
GB
United Kingdom
Prior art keywords
production
apparatus
process
fine powders
powders
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
GB0003081A
Other versions
GB2359096A (en
GB0003081D0 (en
Inventor
David Edward Deegan
Christopher David Chapman
Timothy Paul Johnson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tetronics Ltd
Original Assignee
Tetronics Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tetronics Ltd filed Critical Tetronics Ltd
Priority to GB0003081A priority Critical patent/GB2359096B/en
Publication of GB0003081D0 publication Critical patent/GB0003081D0/en
Priority claimed from US10/203,467 external-priority patent/US7022155B2/en
Publication of GB2359096A publication Critical patent/GB2359096A/en
Application granted granted Critical
Publication of GB2359096B publication Critical patent/GB2359096B/en
Application status is Expired - Fee Related legal-status Critical
Anticipated expiration legal-status Critical

Links

Classifications

    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05HPLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
    • H05H1/00Generating plasma; Handling plasma
    • H05H1/24Generating plasma
    • H05H1/48Generating plasma using an arc
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/08Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
    • B01J19/087Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing electric or magnetic energy
    • B01J19/088Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing electric or magnetic energy giving rise to electric discharges
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER
    • B22F9/00Making metallic powder or suspensions thereof
    • B22F9/02Making metallic powder or suspensions thereof using physical processes
    • B22F9/14Making metallic powder or suspensions thereof using physical processes using electric discharge
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05HPLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
    • H05H1/00Generating plasma; Handling plasma
    • H05H1/24Generating plasma
    • H05H1/26Plasma torches
    • H05H1/32Plasma torches using an arc
    • H05H1/42Plasma torches using an arc with provisions for introducing materials into the plasma, e.g. powder, liquid
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/02Apparatus characterised by their chemically-resistant properties
    • B01J2219/0204Apparatus characterised by their chemically-resistant properties comprising coatings on the surfaces in direct contact with the reactive components
    • B01J2219/0227Apparatus characterised by their chemically-resistant properties comprising coatings on the surfaces in direct contact with the reactive components of graphite
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/08Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
    • B01J2219/0803Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing electric or magnetic energy
    • B01J2219/0805Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing electric or magnetic energy giving rise to electric discharges
    • B01J2219/0807Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing electric or magnetic energy giving rise to electric discharges involving electrodes
    • B01J2219/0809Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing electric or magnetic energy giving rise to electric discharges involving electrodes employing two or more electrodes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/08Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
    • B01J2219/0803Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing electric or magnetic energy
    • B01J2219/0805Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing electric or magnetic energy giving rise to electric discharges
    • B01J2219/0807Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing electric or magnetic energy giving rise to electric discharges involving electrodes
    • B01J2219/0816Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing electric or magnetic energy giving rise to electric discharges involving electrodes involving moving electrodes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/08Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
    • B01J2219/0803Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing electric or magnetic energy
    • B01J2219/0805Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing electric or magnetic energy giving rise to electric discharges
    • B01J2219/0807Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing electric or magnetic energy giving rise to electric discharges involving electrodes
    • B01J2219/0816Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing electric or magnetic energy giving rise to electric discharges involving electrodes involving moving electrodes
    • B01J2219/082Sliding electrodes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/08Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
    • B01J2219/0803Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing electric or magnetic energy
    • B01J2219/0805Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing electric or magnetic energy giving rise to electric discharges
    • B01J2219/0807Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing electric or magnetic energy giving rise to electric discharges involving electrodes
    • B01J2219/0824Details relating to the shape of the electrodes
    • B01J2219/0826Details relating to the shape of the electrodes essentially linear
    • B01J2219/083Details relating to the shape of the electrodes essentially linear cylindrical
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/08Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
    • B01J2219/0803Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing electric or magnetic energy
    • B01J2219/0805Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing electric or magnetic energy giving rise to electric discharges
    • B01J2219/0807Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing electric or magnetic energy giving rise to electric discharges involving electrodes
    • B01J2219/0824Details relating to the shape of the electrodes
    • B01J2219/0835Details relating to the shape of the electrodes substantially flat
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/08Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
    • B01J2219/0803Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing electric or magnetic energy
    • B01J2219/0805Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing electric or magnetic energy giving rise to electric discharges
    • B01J2219/0807Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing electric or magnetic energy giving rise to electric discharges involving electrodes
    • B01J2219/0837Details relating to the material of the electrodes
    • B01J2219/0839Carbon
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/08Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
    • B01J2219/0803Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing electric or magnetic energy
    • B01J2219/0805Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing electric or magnetic energy giving rise to electric discharges
    • B01J2219/0807Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing electric or magnetic energy giving rise to electric discharges involving electrodes
    • B01J2219/0837Details relating to the material of the electrodes
    • B01J2219/0841Metal
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/08Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
    • B01J2219/0869Feeding or evacuating the reactor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/08Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
    • B01J2219/0871Heating or cooling of the reactor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/08Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
    • B01J2219/0873Materials to be treated
    • B01J2219/0879Solid
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/08Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
    • B01J2219/0873Materials to be treated
    • B01J2219/0881Two or more materials
    • B01J2219/0886Gas-solid
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/08Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
    • B01J2219/0894Processes carried out in the presence of a plasma
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/08Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
    • B01J2219/0894Processes carried out in the presence of a plasma
    • B01J2219/0898Hot plasma
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER
    • B22F2999/00Aspects linked to processes or compositions used in powder metallurgy
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05HPLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
    • H05H1/00Generating plasma; Handling plasma
    • H05H1/24Generating plasma
    • H05H1/26Plasma torches
    • H05H1/32Plasma torches using an arc
    • H05H1/34Details, e.g. electrodes, nozzles
    • H05H2001/3415Details, e.g. electrodes, nozzles indexing scheme associated with H05H1/34
    • H05H2001/3489Details, e.g. electrodes, nozzles indexing scheme associated with H05H1/34 contact starting
GB0003081A 2000-02-10 2000-02-10 Apparatus and process for the production of fine powders Expired - Fee Related GB2359096B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0003081A GB2359096B (en) 2000-02-10 2000-02-10 Apparatus and process for the production of fine powders

Applications Claiming Priority (17)

Application Number Priority Date Filing Date Title
GB0003081A GB2359096B (en) 2000-02-10 2000-02-10 Apparatus and process for the production of fine powders
US10/203,467 US7022155B2 (en) 2000-02-10 2001-02-09 Plasma arc reactor for the production of fine powders
AT01904146T AT258092T (en) 2000-02-10 2001-02-09 Plasma reactor for the production of fine powder
JP2001557715A JP2003522299A (en) 2000-02-10 2001-02-09 Plasma arc reactor for producing a fine powder
EP03024817A EP1398100A3 (en) 2000-02-10 2001-02-09 Plasma arc reactor for the production of fine powders
IL15111401A IL151114D0 (en) 2000-02-10 2001-02-09 Plasma arc reactor for the production of fine powders
CN 01804797 CN100418674C (en) 2000-02-10 2001-02-09 Plasma arc reactor for the production of fine powders
DE2001601840 DE60101840T2 (en) 2000-02-10 2001-02-09 Plasma reactor for the production of fine powder
RU2002123919/02A RU2263006C2 (en) 2000-02-10 2001-02-09 Plasma-arc reactor and fine powder producing method
PCT/GB2001/000553 WO2001058625A1 (en) 2000-02-10 2001-02-09 Plasma arc reactor for the production of fine powders
CA002399581A CA2399581A1 (en) 2000-02-10 2001-02-09 Plasma arc reactor for the production of fine powders
AU3206301A AU3206301A (en) 2000-02-10 2001-02-09 Plasma arc reactor for the production of fine powders
EP01904146A EP1257376B1 (en) 2000-02-10 2001-02-09 Plasma arc reactor for the production of fine powders
EP04000974A EP1415741A3 (en) 2000-02-10 2001-02-09 Plasma arc reactor for the production of fine powders
IL151114A IL151114A (en) 2000-02-10 2002-08-07 Plasma arc reactor for the production of fine powders
US11/304,633 US7727460B2 (en) 2000-02-10 2005-12-16 Plasma arc reactor for the production of fine powders
US11/304,705 US20060096417A1 (en) 2000-02-10 2005-12-16 Plasma arc reactor for the production of fine powders

Publications (3)

Publication Number Publication Date
GB0003081D0 GB0003081D0 (en) 2000-03-29
GB2359096A GB2359096A (en) 2001-08-15
GB2359096B true GB2359096B (en) 2004-07-21

Family

ID=9885338

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0003081A Expired - Fee Related GB2359096B (en) 2000-02-10 2000-02-10 Apparatus and process for the production of fine powders

Country Status (1)

Country Link
GB (1) GB2359096B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102615289A (en) * 2011-01-28 2012-08-01 杭州华纳塔器科技有限公司 Evaporation-condensation method for preparing superfine metal powder
JP5821579B2 (en) * 2011-12-01 2015-11-24 昭栄化学工業株式会社 Plasma equipment for metal powder production

Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3989512A (en) * 1974-06-07 1976-11-02 National Research Development Corporation Plasma heat treatment means and method
US4238427A (en) * 1979-04-05 1980-12-09 Chisholm Douglas S Atomization of molten metals
US4877937A (en) * 1986-11-12 1989-10-31 Castolin S.A. Plasma spray torch
JPH03264601A (en) * 1990-03-14 1991-11-25 Daido Steel Co Ltd Manufacture of hard particle dispersed alloy powder and itself
GB2273027A (en) * 1992-11-26 1994-06-01 Atomic Energy Authority Uk Electrode arrangement in a microwave plasma generator
US5332885A (en) * 1991-02-21 1994-07-26 Plasma Technik Ag Plasma spray apparatus for spraying powdery or gaseous material
JPH06299209A (en) * 1993-04-14 1994-10-25 Sansha Electric Mfg Co Ltd Formation of powder granule of magnetic material
US5408066A (en) * 1993-10-13 1995-04-18 Trapani; Richard D. Powder injection apparatus for a plasma spray gun
US5420391A (en) * 1994-06-20 1995-05-30 Metcon Services Ltd. Plasma torch with axial injection of feedstock
US5481080A (en) * 1991-12-12 1996-01-02 Kvaerner Engineering A.S. Plasma torch with a lead-in tube
JPH08243756A (en) * 1995-03-03 1996-09-24 Mitsubishi Materials Corp Welding torch for cladding by plasma arc welding and method for cladding by welding
US5593740A (en) * 1995-01-17 1997-01-14 Synmatix Corporation Method and apparatus for making carbon-encapsulated ultrafine metal particles
EP0766502A1 (en) * 1995-09-28 1997-04-02 Sulzer Metco (Irvine) Inc. Single cathode plasma gun with powder feed along central axis of exit barrel
JPH10256528A (en) * 1997-03-10 1998-09-25 Agency Of Ind Science & Technol Method for generating layered aluminum fine particles and its application

Patent Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3989512A (en) * 1974-06-07 1976-11-02 National Research Development Corporation Plasma heat treatment means and method
US4238427A (en) * 1979-04-05 1980-12-09 Chisholm Douglas S Atomization of molten metals
US4877937A (en) * 1986-11-12 1989-10-31 Castolin S.A. Plasma spray torch
JPH03264601A (en) * 1990-03-14 1991-11-25 Daido Steel Co Ltd Manufacture of hard particle dispersed alloy powder and itself
US5332885A (en) * 1991-02-21 1994-07-26 Plasma Technik Ag Plasma spray apparatus for spraying powdery or gaseous material
US5481080A (en) * 1991-12-12 1996-01-02 Kvaerner Engineering A.S. Plasma torch with a lead-in tube
GB2273027A (en) * 1992-11-26 1994-06-01 Atomic Energy Authority Uk Electrode arrangement in a microwave plasma generator
JPH06299209A (en) * 1993-04-14 1994-10-25 Sansha Electric Mfg Co Ltd Formation of powder granule of magnetic material
US5408066A (en) * 1993-10-13 1995-04-18 Trapani; Richard D. Powder injection apparatus for a plasma spray gun
US5420391A (en) * 1994-06-20 1995-05-30 Metcon Services Ltd. Plasma torch with axial injection of feedstock
US5420391B1 (en) * 1994-06-20 1998-06-09 Metcon Services Ltd Plasma torch with axial injection of feedstock
US5593740A (en) * 1995-01-17 1997-01-14 Synmatix Corporation Method and apparatus for making carbon-encapsulated ultrafine metal particles
JPH08243756A (en) * 1995-03-03 1996-09-24 Mitsubishi Materials Corp Welding torch for cladding by plasma arc welding and method for cladding by welding
EP0766502A1 (en) * 1995-09-28 1997-04-02 Sulzer Metco (Irvine) Inc. Single cathode plasma gun with powder feed along central axis of exit barrel
JPH10256528A (en) * 1997-03-10 1998-09-25 Agency Of Ind Science & Technol Method for generating layered aluminum fine particles and its application

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
WPI Accession no 92-013623 & JP 03 264 601 A *
WPI Accession no 95-012138 & JP 06 299 209 A *
WPI Accession no 96-480689 & JP 08 243 756 A *

Also Published As

Publication number Publication date
GB0003081D0 (en) 2000-03-29
GB2359096A (en) 2001-08-15

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PCNP Patent ceased through non-payment of renewal fee

Effective date: 20070210

732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)