KR920000358A - 코팅된 용융금속 필터(Filter) - Google Patents

코팅된 용융금속 필터(Filter) Download PDF

Info

Publication number
KR920000358A
KR920000358A KR1019910002016A KR910002016A KR920000358A KR 920000358 A KR920000358 A KR 920000358A KR 1019910002016 A KR1019910002016 A KR 1019910002016A KR 910002016 A KR910002016 A KR 910002016A KR 920000358 A KR920000358 A KR 920000358A
Authority
KR
South Korea
Prior art keywords
filter
molten metal
coating
carbon
thermite
Prior art date
Application number
KR1019910002016A
Other languages
English (en)
Inventor
파울 데이 죤
밴 죤슨 티모스
데이비드 큐인 로날드
Original Assignee
알프레드 엘, 미첼슨
코닝 인코오포레이티드
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 알프레드 엘, 미첼슨, 코닝 인코오포레이티드 filed Critical 알프레드 엘, 미첼슨
Publication of KR920000358A publication Critical patent/KR920000358A/ko

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/14—Other self-supporting filtering material ; Other filtering material
    • B01D39/20—Other self-supporting filtering material ; Other filtering material of inorganic material, e.g. asbestos paper, metallic filtering material of non-woven wires
    • B01D39/2027—Metallic material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/10—Filter screens essentially made of metal
    • B01D39/12—Filter screens essentially made of metal of wire gauze; of knitted wire; of expanded metal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/14—Other self-supporting filtering material ; Other filtering material
    • B01D39/20—Other self-supporting filtering material ; Other filtering material of inorganic material, e.g. asbestos paper, metallic filtering material of non-woven wires
    • B01D39/2027—Metallic material
    • B01D39/2051—Metallic foam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/14—Other self-supporting filtering material ; Other filtering material
    • B01D39/20—Other self-supporting filtering material ; Other filtering material of inorganic material, e.g. asbestos paper, metallic filtering material of non-woven wires
    • B01D39/2055—Carbonaceous material
    • B01D39/2058—Carbonaceous material the material being particulate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/14—Other self-supporting filtering material ; Other filtering material
    • B01D39/20—Other self-supporting filtering material ; Other filtering material of inorganic material, e.g. asbestos paper, metallic filtering material of non-woven wires
    • B01D39/2068—Other inorganic materials, e.g. ceramics
    • B01D39/2093—Ceramic foam
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
    • C22B9/02—Refining by liquating, filtering, centrifuging, distilling, or supersonic wave action including acoustic waves
    • C22B9/023—By filtering
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/04—Additives and treatments of the filtering material
    • B01D2239/0471—Surface coating material
    • B01D2239/0478—Surface coating material on a layer of the filter
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24149—Honeycomb-like
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/249921—Web or sheet containing structurally defined element or component
    • Y10T428/249953—Composite having voids in a component [e.g., porous, cellular, etc.]
    • Y10T428/249987—With nonvoid component of specified composition
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/30—Self-sustaining carbon mass or layer with impregnant or other layer
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31678—Of metal

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Ceramic Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Inorganic Chemistry (AREA)
  • Acoustics & Sound (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Textile Engineering (AREA)
  • Filtering Materials (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Coating With Molten Metal (AREA)

Abstract

내용 없음

Description

코팅된 용융금속 필터(filter)
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본 발명의 필터가 사용된 통상적인 주형어셈블리(assembly)의 구조도이고,
제2a, 2b 및 2c는 본 발명의 필터를 위치시킨 것을 나타내는 연속적인 주조 어셈블리 부분의 구조도이며,
제3도는 코팅내에 탄소의 농도변화에 따른 필터의 코팅높이와 주어진 과열(super heat)에서 용융금속이 필터를 통과하는지 여부를 나타내는 그래프로서, 탄소는 테르밋(thermite)코팅상의 코팅으로서 나타낸 것이다.

Claims (13)

  1. 탄소와, 필터 표면상의 테르밋 물질과 초기 접촉시 탄소로 되는 것으로 구성되는 군으로 부터 선택된 코팅을 가짐을 특징르로 하는 용융금속 필터.
  2. 제1항에 있어서, 코팅은 실제적으로 필터 표면상의 테르밋 물질과 초기 접촉시 탄소로 되는 것임을 특징으로 하는 용융금속 필터.
  3. 제2항에 있어서, 코팅은 테르밋 물질의 코팅상에서 탄소코팅이 위치하는 형태로 필터상에서 존재함을 특징으로 하는 용융금속 필터.
  4. 제2항에 있어서, 코팅은 탄소 코팅상에 테르밋 코팅이 위치하는 형태로 필터상에 존재함을 특징으로 하는 용융금속 필터.
  5. 제2항에 있어서, 코팅은 탄소와 테르밋 혼합물의 단일코팅 형태로 필터상에 존재함을 특징으로 하는 용융금속 필터.
  6. 제1항에 있어서, 필터의 구조는 발포구조임을 특징으로 하는 용융금속 필터.
  7. 제1항에 있어서, 필터의 구조는 필터의 가질이 세락믹 물질, 금속과 이들의 혼합물로 구성되는 군으로 부터 선택된 물질로 제조된 세포모양의 구조임을 특징으로 하는 용융금속 필터.
  8. 제1항에 있어서, 필터의 구조는 다공성 벽으로 된 벌집형태임을 특징으로 하는 용융금속 필터.
  9. 제8항에 있어서, 필터의 기질은 세라미 물질로 제조된 것임을 특징으로 하는 용융금속 필터.
  10. 용융금속용 필터, 용융금속이 필터를 통과하는 흐름통로 장치로 구성되어지되, 흐름통로 장치는 용융금속 통로로 정의되는 표면을 가지며, 필터는 탄소와 필터 표면상의 테르밋 물질과 초기 접촉시 탄소로 되는 것으로 구성되는 군으로 부터 선택된 코팅을 가지는 것임을 특징으로 하는 용융금속 주조에 적합한 어셈블리.
  11. 제10항에 있어서, 어셈블리는 용융금속 흐름통로로 의해 유도된, 용융금속이 주조되는 하나 이상의 주형공동을 가지는 주형 어셈블리임을 특징으로 하는 어셈블리.
  12. 용융금속을 제1항의 필터로 통과시킴을 특징으로 하는 용융금속 여과방법.
  13. 제12항에 있어서, 용융금속은 철임을 특징으로 하는 용융금속 여과방법.
    ※ 참고사항 : 최초출원 내용에 의하여 공개되는 것임.
KR1019910002016A 1990-06-22 1991-02-06 코팅된 용융금속 필터(Filter) KR920000358A (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/542,725 US5104540A (en) 1990-06-22 1990-06-22 Coated molten metal filters
US542,725 1990-06-22

Publications (1)

Publication Number Publication Date
KR920000358A true KR920000358A (ko) 1992-01-29

Family

ID=24165029

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019910002016A KR920000358A (ko) 1990-06-22 1991-02-06 코팅된 용융금속 필터(Filter)

Country Status (11)

Country Link
US (1) US5104540A (ko)
EP (1) EP0463234B1 (ko)
JP (1) JPH04231426A (ko)
KR (1) KR920000358A (ko)
AT (1) ATE107184T1 (ko)
AU (1) AU627638B2 (ko)
BR (1) BR9006659A (ko)
CA (1) CA2031136A1 (ko)
DE (1) DE69009994T2 (ko)
ES (1) ES2048618B1 (ko)
TW (1) TW209178B (ko)

Families Citing this family (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5198007A (en) * 1991-12-05 1993-03-30 The Dow Chemical Company Filter including a porous discriminating layer on a fused single crystal acicular ceramic support, and method for making the same
US6143421A (en) * 1992-09-17 2000-11-07 Coorstek, Inc. Electronic components incorporating ceramic-metal composites
US6247221B1 (en) * 1992-09-17 2001-06-19 Coors Tek, Inc. Method for sealing and/or joining an end of a ceramic filter
US5700373A (en) * 1992-09-17 1997-12-23 Coors Ceramics Company Method for sealing a filter
US5248425A (en) * 1992-10-28 1993-09-28 Corning Incorporated Aqueous thermite coated filter
US5543047A (en) 1992-11-06 1996-08-06 Pall Corporation Filter with over-laid pleats in intimate contact
US5451444A (en) * 1993-01-29 1995-09-19 Deliso; Evelyn M. Carbon-coated inorganic substrates
CA2147112A1 (en) * 1994-05-26 1995-11-27 Kishor Purushottam Gadkaree Electrically heatable activated carbon bodies for adsorption and desorption applications
US5556592A (en) * 1994-08-15 1996-09-17 Hitchings; Jay Filter indexing apparatus for filtering molten metal
EP0745416B1 (en) * 1995-06-02 2003-09-17 Corning Incorporated Device for removal of contaminants from fluid streams
US5741422A (en) * 1995-09-05 1998-04-21 Metaullics Systems Co., L.P. Molten metal filter cartridge
US5961918A (en) * 1996-05-20 1999-10-05 Corning Incorporated Triangular cell metal filters
US5785851A (en) * 1996-08-23 1998-07-28 Vesuvius Crucible Company High capacity filter
US6273932B1 (en) * 1998-05-19 2001-08-14 William Lyon Sherwood Continuous metal melting process
US6946095B2 (en) * 2001-06-08 2005-09-20 Kabushiki Kaisha Kobe Seiko Sho Filter for molten aluminum alloy or molten aluminum
KR100514094B1 (ko) * 2003-03-19 2005-09-13 한국원자력연구소 우라늄 산화물 금속전환 및 여과회수 장치
US7011133B2 (en) * 2004-02-02 2006-03-14 Eckert C Edward Molten aluminum filtration
GB0403466D0 (en) * 2004-02-17 2004-03-24 Mqp Ltd Treatment of metal melts
US20060091070A1 (en) * 2004-10-28 2006-05-04 Aufderheide Ronald C Filters made from chemical binders and microspheres
US20060229476A1 (en) 2005-04-08 2006-10-12 Mitchell Robert L Sr Activated carbon monolith catalyst, methods for making same, and uses thereof
TW200719941A (en) 2005-09-05 2007-06-01 Vesuvius Crucible Co Filter device for molten metal filtration and method for producing such filters
CN101406781A (zh) * 2007-10-08 2009-04-15 济南圣泉集团股份有限公司 一种含有碳涂层的陶瓷过滤器及其制造方法
WO2009076985A1 (en) * 2007-12-17 2009-06-25 Imerys Services Ceramic honeycomb structures
CN101810973B (zh) 2010-04-15 2012-05-23 济南圣泉倍进陶瓷过滤器有限公司 一种用于过滤熔融金属的过滤器及其制造方法
CN102141530B (zh) * 2010-12-20 2012-11-21 中钢集团洛阳耐火材料研究院有限公司 一种连铸用含碳耐火材料的热震评价方法
US20130167734A1 (en) * 2011-12-29 2013-07-04 Avoca Holdings LLC Coating Article For Preventing Metal Leaching Into Edible Materials And Method Of The Same
WO2013102127A2 (en) * 2011-12-29 2013-07-04 Rolls-Royce Corporation Filter
DE102012019802B4 (de) 2012-10-10 2023-07-27 Mercedes-Benz Group AG Verfahren zur Herstellung eines Gusskörpers
CN105522139A (zh) * 2014-09-28 2016-04-27 河南科技大学 一种镁合金铸造浇注用过滤装置
RU2620437C1 (ru) * 2016-04-04 2017-05-25 Федеральное Государственное Бюджетное Учреждение Науки Институт Химии Коми Научного Центра Уральского Отделения Российской Академии Наук Макропористый керамический материал с углеродным нановолокнистым покрытием и способ его получения
KR20180090203A (ko) * 2017-02-02 2018-08-10 (주)엘지하우시스 에어 필터 및 이를 포함하는 공기 정화 모듈
US11006521B2 (en) * 2017-02-23 2021-05-11 Kyocera Corporation Wiring base plate, electronic device package, and electronic device
CN107186206A (zh) * 2017-05-11 2017-09-22 宁波康发铸造有限公司 一种大型铸铁件过滤器
CN107891142A (zh) * 2017-11-02 2018-04-10 路望培 一种带过滤网的冶炼滤渣槽
US20220355232A1 (en) * 2021-05-04 2022-11-10 GM Global Technology Operations LLC Process to make a ceramic filter for metal casting
CN113898416B (zh) * 2021-09-02 2022-07-22 北京航空航天大学 一种液态金属冷却叶片系统及其防腐蚀方法

Family Cites Families (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1596888A (en) * 1922-11-07 1926-08-24 Pacz Aladar Process and composition of matter for increasing the fluidity of molten metal
US4152141A (en) * 1975-04-24 1979-05-01 Swiss Aluminium Ltd. Method of removal of alkali and alkaline earth metals from light metal melts
JPS5660618A (en) * 1979-10-23 1981-05-25 Bridgestone Corp Porous ceramic structure
US4329162A (en) * 1980-07-03 1982-05-11 Corning Glass Works Diesel particulate trap
DE3140098A1 (de) * 1981-10-06 1983-04-21 Schweizerische Aluminium AG, 3965 Chippis Filtermedium in form eines stabilen poroesen koerpers
DE3222162C2 (de) * 1982-06-10 1985-07-11 Schweizerische Aluminium Ag, Chippis Filter zur Filtration von schmelzflüssigen Metallen
US4591383A (en) * 1982-09-30 1986-05-27 Corning Glass Works Apparatus and method of filtering molten metal using honeycomb structure of sintered alumina as filter element
FR2539061A1 (fr) * 1983-01-11 1984-07-13 Fonderie Mecanique Ste Bretonn Dispositif de filtration pour la coulee de metaux ferreux
CH655328A5 (de) * 1984-02-15 1986-04-15 Fischer Ag Georg Keramikfilter.
US4708740A (en) * 1984-04-11 1987-11-24 Olin Corporation Technique for forming silicon carbide coated porous filters
US4610832A (en) * 1984-09-26 1986-09-09 Swiss Aluminium Ltd. Process for preparing a ceramic foam
JPS61216840A (ja) * 1985-03-23 1986-09-26 Nabeya:Kk 瞬間接種鋳造法
US4681624A (en) * 1985-04-26 1987-07-21 Corning Glass Works Method of filtering molten metals using a monolithic refractory honeycomb filter
JPS6221458A (ja) * 1985-07-18 1987-01-29 Nabeya:Kk 垂直鋳込方法
GB8604569D0 (en) * 1986-02-25 1986-04-03 Foseco Int Casting of molten ferrous metal
FR2604920B1 (fr) * 1986-10-10 1988-12-02 Ceraver Membrane de filtration ceramique et procede de fabrication
US4802527A (en) * 1987-11-16 1989-02-07 Swiss Aluminum Ltd. Apparatus for casting molten metal
US4834876A (en) * 1988-03-14 1989-05-30 Walker Nicholas G Filtration assembly having integral heating means for maintaining the metallic material being filtered in the molten state
ES2050716T3 (es) * 1988-03-17 1994-06-01 Ceramiques Tech Soc D Membrana de filtrado y procedimiento de fabricacion.
US5022991A (en) * 1988-09-08 1991-06-11 Corning Incorporated Thermite coated filter
CH679746A5 (ko) * 1989-01-11 1992-04-15 Fischer Ag Georg
EP0410603A1 (en) * 1989-07-26 1991-01-30 Foseco International Limited Casting of molten iron and filters for use therein

Also Published As

Publication number Publication date
ES2048618B1 (es) 1994-10-01
AU627638B2 (en) 1992-08-27
AU6768490A (en) 1992-01-02
EP0463234B1 (en) 1994-06-15
EP0463234A1 (en) 1992-01-02
DE69009994T2 (de) 1995-01-05
JPH04231426A (ja) 1992-08-20
DE69009994D1 (de) 1994-07-21
ES2048618A1 (es) 1994-03-16
US5104540A (en) 1992-04-14
CA2031136A1 (en) 1991-12-23
BR9006659A (pt) 1991-12-24
ATE107184T1 (de) 1994-07-15
TW209178B (ko) 1993-07-11

Similar Documents

Publication Publication Date Title
KR920000358A (ko) 코팅된 용융금속 필터(Filter)
SE8404387L (sv) Gjutning och beleggning med metallpartiklar
KR880012288A (ko) 금속스트립의 연속 주조법
DE68928901D1 (de) Verfahren zur Herstellung eines porösen Filterkörpers
ATE27559T1 (de) Giessen metallischer materialien.
ATE40804T1 (de) Feuerfeste auskleidung eines metallurgischen gefaesses und verfahren zu ihrer herstellung.
BR8701336A (pt) Processo para purificar aco,painel de material refratario e panela intermediaria para uso no lingotamento continuo de aco
FI896172A0 (fi) Rening av smaelt metall.
FI905743A0 (fi) Laite ohuiden metalliliuskojen jatkuvaksi valamiseksi kahden telan välissä
GB1334276A (en) Open ended mould assembly
DK0478741T3 (da) Kontinuerligt støbt bjælkeråemne og fremgangsmåde til støbning af kontinuerligt støbt bjælkeråemne
KR930021294A (ko) 저-가스 및 무-세공(pore) 알루미늄 주조합금의 제조공정 및 장치
Solignac Process for Controlling the Thickness of a Metal Strip Continuously Cast on a Cylinder
JPS5794445A (en) Casting method for casting requiring long hole in inside
ES461726A1 (es) Perfeccionamientos en dispositivos refractarios dosificado- res de colada.
JPS5674352A (en) Production of thin-walled iron casting
SU589073A1 (ru) Способ местного легировани отливок
JPS5662670A (en) Pressure casting method
Dyudkin Improving the Quality of Continuously Cast Slab Using an Intermediate'Mould' on the Machine
RU93007350A (ru) Способ обработки алюминиевых сплавов
NO20013073L (no) Fremgangsmåte for filtrering av flytende metall på et sjikt av ildfast partikkelmateriale
ATE87248T1 (de) Fluessigmetall-verfahrenstechnik.
JPS6483339A (en) Method for continuously casting steel strip
Day et al. Coated Molten Metal Filters
Hiraoka Commercial Application of" Hot Top" Ingot Casting Method

Legal Events

Date Code Title Description
WITN Application deemed withdrawn, e.g. because no request for examination was filed or no examination fee was paid