WO2000048208A1 - Permanent magnetic materials of the r-fe-b type and process of manufacture - Google Patents
Permanent magnetic materials of the r-fe-b type and process of manufacture Download PDFInfo
- Publication number
- WO2000048208A1 WO2000048208A1 PCT/US2000/002649 US0002649W WO0048208A1 WO 2000048208 A1 WO2000048208 A1 WO 2000048208A1 US 0002649 W US0002649 W US 0002649W WO 0048208 A1 WO0048208 A1 WO 0048208A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- atomic
- magnetic material
- permanent magnetic
- type
- powder
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
- H01F1/04—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys
- H01F1/047—Alloys characterised by their composition
- H01F1/053—Alloys characterised by their composition containing rare earth metals
- H01F1/055—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5
- H01F1/057—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B
- H01F1/0571—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes
- H01F1/0575—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes pressed, sintered or bonded together
- H01F1/0577—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes pressed, sintered or bonded together sintered
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
- H01F1/04—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys
- H01F1/047—Alloys characterised by their composition
- H01F1/053—Alloys characterised by their composition containing rare earth metals
- H01F1/055—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5
- H01F1/057—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B
Definitions
- the present invention relates to magnetic material compositions and a process for their manufacture, and more particularly performance magnetic material of the iron-boron-rare earth type (Fe-B-R).
- Neodymium Neodymium
- Fe-B-R type where R is a rare earth element containing high concentrations of the element Neodymium (Nd) has become common in industry since the early 1980's.
- Nd Neodymium
- MRI magnetic resonance imaging
- Permanent magnets of the Fe-B-R type where R is one or more rare earth elements of which at least 50% of R is Nd and/ or Praseodymium (Pr), are known.
- R is one or more rare earth elements of which at least 50% of R is Nd and/ or Praseodymium (Pr)
- Pr Praseodymium
- Such patents teach a high performance magnet consisting of, by atomic percent, (i) 12.5% -20% R wherein R is at least one rare earth element (selected from the group consisting of Nd, Pr, La, Ce, Tb, Dy, Ho, Er, Eu, Sm, Gd, Pm, Tm, Yb, Lu and Y) and at least 50% of R consists of Nd and/ or Pr; (ii) 4-20%B; and (iii) the balance Fe with impurities.
- R is at least one rare earth element (selected from the group consisting of Nd, Pr, La, Ce, Tb, Dy, Ho, Er, Eu, Sm, Gd, Pm, Tm, Yb, Lu and Y) and at least 50% of R consists of Nd and/ or Pr; (ii) 4-20%B; and (iii) the balance Fe with impurities.
- R is at least one rare earth element (selected from the group consisting of Nd, Pr, La, Ce, T
- a permanent magnet prepared in the above fashion specifically comprised of 77 Fe-9 B-9 Nd-5 Pr (wherein Nd and Pr together comprise the rare earth component), sintered at 1,120 C for four hours in an inert atmosphere can acquire a high maximum energy product (BH)max of approximately 31.0 MGOe.
- a permanent magnet comprised of 79 Fe-7 B-14 Nd, sintered at 1,120 C for one hour at (atmosphere), can acquire a maximum energy product (BH)max of approximately 33.8 MGOe (ref. Table 1, U.S. 4,975,130).
- a sintered permanent magnet comprising 77Fe-7B-16Pr, sintered at 1,040 C in a vacuum at lxlO -4 torr for two hours can be produced having a maximum energy product somewhat less, namely, 24.5 MGOe.
- R additionally comprises 70- 76% Pr, 29.8-23.8% Nd and up to and including 5% Ce with no significant or only slight decrease in the magnetic performance of the resultant permanent magnet.
- additional magnetic material having Ce and Pr as described herein can be used so as to make up the deficit in strength of magnetic field required in an MRI device.
- the applicants' invention comprises a high performance permanent magnetic material of the Fe-B-R type, said material essentially consisting of:
- R comprises a mixture of rare earth elements Nd, Pr, and Ce wherein Ce is between approximately 0.2% and no more than 5.0 wt. % of R and Pr is between 70-76% and 29.8-23.8% Nd;
- the Fe-B-R magnet of the present invention essentially consisted of, by atomic %, 15-16% R, with Ce comprising 0.5-3 wt. %, and preferably 0.5%, with the remainder of R essentially consisting of Pr and/ or Nd, preferably in the order of about 71.6% Pr and 24.9 % Nd, i.e. a 3:1 ratio.
- the present invention further comprises a sintered permanent magnetic material of the Fe-B-R type when made in accordance with the following process, namely:
- a metallic powder having a mean particle size of 0.3-80 microns said metallic powder formed from a composition essentially consisting of 15-16 atomic % R, wherein R essentially consists of the light rare earths Nd, Pr, and Ce, wherein Ce is between 0.2-5.0 wt. % of said R, the balance of R essentially consisting of 29.8-23.8% Nd and 70-76% Pr; 4-8 atomic % B, and at least 52 atomic % Fe;
- the invention further comprises a method for producing sintered permanent magnets.
- the invention also comprises a process for preparing a sintered permanent magnetic material of the Fe-B-R type, said process comprising:
- R essentially consists of the light rare earths Nd, Pr, and Ce, wherein Ce is between 0.1-5.0 wt. % of said R and preferably 0.5% of R, and preferably approximately 74% Pr and 25% Nd; 4-24 atomic % B and preferably 6.5 atomic % B; and at least 52 atomic % Fe and preferably 78 atomic %;
- Fig 1 is a graph of selected results from Table I, showing intrinsic coercive force H C i of a permanent magnet material of the Fe-B-R type as a function of Praseodymium composition of R, at Cerium concentrations of 0.5% of R;
- Fig. 2 is a graph of selected results from Table I, showing intrinsic coercive force H c ; of a permanent magnet material of the Fe-B-R type as a function of Praseodymium composition of R, at Cerium concentrations between 5.0-5.3 % of R;
- Fig. 3 is a graph similar to Fig. 4, showing selected result from
- Table I plotting intrinsic coercive force H C i of a permanent magnet material of the Fe-B-R type as a function of Cerium composition of R, at Praseodymium concentrations between 22.5 and 25% of R;
- Fig. 4 is a graph similar to Fig. 3 showing selected result from Table I, plotting intrinsic coercive force H C i of a permanent magnet material of the Fe-B-R type as a function of Cerium composition of R, at Praseodymium concentrations between 50-60% of R, and
- Fig. 5 is a graph similar to Fig. 4, showing selected result from Table I, plotting intrinsic coercive force Hci of a permanent magnet material of the Fe-B-R type as a function of Cerium composition of R, at Praseodymium concentratnions between 74.6-100% of R.
- the applicant has experimented with permanent magnets of the Fe-B-R type having various concentrations of Cerium as part of the rare earth component.
- the applicant has further varied the relative ratios and concentration of Nd and/ or Pr of the rare earth component in relation to the amount of Ce, and measured the resultant magnetic properties of the Fe-B-R permanent magnets so created.
- Table I sets out the results for 35 samples of Fe-B-R type permanent magnets, where the composition of R was varied by utilizing various ratios of Ce, Pr, and Nd.
- Test Sample (wt % of R) (wt. % of R) (wt. % of R) (kOe)
- Figs. 1-5 appended hereto are graphical plots of selected data from Table I, compiled for the purposes of assisting in interpreting the data in
- FIG. 1 shows a plot of magnetic performance H C i as a function of Cerium addition, at relatively constant values of Pr (from 22.5 to 25% wt. of R).
- Fig. 4 shows a plot of magnetic performance H c ; as a function of Cerium addition, at relatively constant values of Pr (from 50-60 wt. %).
- Fig 5 likewise shows a plot of magnetic performance H c i as a function of Cerium addition, at relatively constant values of Pr (from 74.6 to 100%).
- Pr (wt. %) where Ce amount is kept approximately constant generally tended to show an increase in magnetic performance H C i as the percentage of Pr was increased, at least for ranges of Ce concentrations at 0.5% and 10%.
- the compacted body was sintered in an inert gas atmosphere at a temperature of 1120 C for 2 hours.
- the magnetic field applied to the powders to co-align the powder particles be at least 7 kOe.
- the magnetic field that is applied to the powder may have a range of about 7 to about 30 kOe. In another embodiment, the magnetic field may range from about 7 to about 20 kOe.
- the Fe-B-R magnet of the present invention containing Cerium in certain defined percentages may be prepared by the powder metallurgical sintering procedure used in preparation of the aforementioned samples.
- a description of the applicant's process, insofar as it relates to a process for the manufacture of the applicant's new composition, is set out below.
- a metallic powder having a mean particle size of 0.3-80 microns, preferably less than 10 microns, is formed from a composition consisting of
- R 13-19 atomic % R, preferably 15.16 atomic % R, wherein R essentially consists of the light rare earths Nd and/ or Pr, and Ce, wherein Ce is between 0.2 to 5.0 wt. %, and preferably 0.5%, the balance of R essentially consists of Nd and Pr, and preferably approximately 74.6% Pr and 24.9% Nd.
- Such powder may be produced by known ball milling procedures, or Alpine jet milling. Since the distribution of particle size of the powder made by ball milling is wider than with powders made from Alpine jet mill, which definitely affects magnet alignment, Br, and thus (BH)ma ⁇ / the latter set milling procedure is preferred.
- the resultant powder may optionally be exposed to a magnetic field, of a strength equal to 7.0 to 20 kOe as in the case of the sample specimens.
- the metallic powder is then compacted at a pressure of at least 1.5 ton/ cm 2 to produce a resultant compacted body having a density of at least 5g/ cm 2 .
- the resulting compacted body is then sintered in a reducing as or inert gas atmosphere, or as in a vacuum, at a temperature between 900- 1200 C, and preferably between 1000-1180 C, for a period of 15 minutes to 8 hours and preferably for at least 1 hour.
Landscapes
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Hard Magnetic Materials (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/673,045 US6669788B1 (en) | 1999-02-12 | 2000-02-02 | Permanent magnetic materials of the Fe-B-R tpe, containing Ce and Nd and/or Pr, and process for manufacture |
AU27515/00A AU2751500A (en) | 1999-02-12 | 2000-02-02 | Permanent magnetic materials of the r-fe-b type and process of manufacture |
EP00905918A EP1072043B1 (en) | 1999-02-12 | 2000-02-02 | Permanent magnetic materials of the r-fe-b type and process of manufacture |
DE60010385T DE60010385T2 (en) | 1999-02-12 | 2000-02-02 | PERMANENT MAGNETIC MATERIALS OF TYPE R-FE-B AND MANUFACTURING METHOD THEREFOR |
JP2000599044A JP4585691B2 (en) | 2000-02-02 | 2000-02-02 | Fe-BR type permanent magnet material containing Ce and Nd and / or Pr and method for producing the same |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 99102207 CN1251252C (en) | 1999-02-12 | 1999-02-12 | Iron-boron-rare earth type pemanent magnetic material containing cerium, neodymium and/or praseodymium and its production method |
CN99102207.6 | 1999-02-12 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2000048208A1 true WO2000048208A1 (en) | 2000-08-17 |
WO2000048208A9 WO2000048208A9 (en) | 2001-08-09 |
Family
ID=5270771
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2000/002649 WO2000048208A1 (en) | 1999-02-12 | 2000-02-02 | Permanent magnetic materials of the r-fe-b type and process of manufacture |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1072043B1 (en) |
CN (1) | CN1251252C (en) |
AU (1) | AU2751500A (en) |
DE (1) | DE60010385T2 (en) |
WO (1) | WO2000048208A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6518867B2 (en) * | 2001-04-03 | 2003-02-11 | General Electric Company | Permanent magnet assembly and method of making thereof |
US7148689B2 (en) | 2003-09-29 | 2006-12-12 | General Electric Company | Permanent magnet assembly with movable permanent body for main magnetic field adjustable |
US7218195B2 (en) | 2003-10-01 | 2007-05-15 | General Electric Company | Method and apparatus for magnetizing a permanent magnet |
US7423431B2 (en) | 2003-09-29 | 2008-09-09 | General Electric Company | Multiple ring polefaceless permanent magnet and method of making |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100461308C (en) * | 2005-05-22 | 2009-02-11 | 横店集团东磁有限公司 | Ultra-high coercive force sintered Nd-Fe-B magnetic material and preparing process thereof |
CN101694797B (en) * | 2009-10-27 | 2012-08-22 | 麦格昆磁(天津)有限公司 | Novel neodymium iron boron magnetic material |
CN102969112B (en) * | 2012-12-05 | 2016-04-27 | 麦格昆磁(天津)有限公司 | Rare earth permanent magnet powder and preparation method thereof and magnet prepared therefrom and magnetic device |
CN106448987A (en) * | 2016-10-16 | 2017-02-22 | 桂林电子科技大学 | Method for preparing high-coercivity rare earth permanent magnetic ribbon with optimized composition proportion |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0286357A2 (en) * | 1987-04-06 | 1988-10-12 | Ford Motor Company Limited | Multiphase permanent magnet of the Fe-B-MM type |
US4908076A (en) * | 1984-04-24 | 1990-03-13 | Yamaha Corporation | FE-B magnets containing Nd-Pr-Ce rare earth elements |
JPH06346200A (en) * | 1993-06-14 | 1994-12-20 | Daido Steel Co Ltd | Permanent magnet alloy |
-
1999
- 1999-02-12 CN CN 99102207 patent/CN1251252C/en not_active Expired - Fee Related
-
2000
- 2000-02-02 DE DE60010385T patent/DE60010385T2/en not_active Expired - Lifetime
- 2000-02-02 EP EP00905918A patent/EP1072043B1/en not_active Expired - Lifetime
- 2000-02-02 AU AU27515/00A patent/AU2751500A/en not_active Abandoned
- 2000-02-02 WO PCT/US2000/002649 patent/WO2000048208A1/en active IP Right Grant
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4908076A (en) * | 1984-04-24 | 1990-03-13 | Yamaha Corporation | FE-B magnets containing Nd-Pr-Ce rare earth elements |
EP0286357A2 (en) * | 1987-04-06 | 1988-10-12 | Ford Motor Company Limited | Multiphase permanent magnet of the Fe-B-MM type |
JPH06346200A (en) * | 1993-06-14 | 1994-12-20 | Daido Steel Co Ltd | Permanent magnet alloy |
Non-Patent Citations (2)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 1995, no. 03 28 April 1995 (1995-04-28) * |
SEQUEIRA W P ET AL: "THE MAGNETIC PROPERTIES OF NANOCRYSTALLINE MELT SPUN IRON-DIDYMIUM-BORON ALLOYS", MATERIALS LETTERS,NL,NORTH HOLLAND PUBLISHING COMPANY. AMSTERDAM, vol. 15, no. 5 / 06, 1 January 1993 (1993-01-01), pages 376 - 378, XP000355223, ISSN: 0167-577X * |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6518867B2 (en) * | 2001-04-03 | 2003-02-11 | General Electric Company | Permanent magnet assembly and method of making thereof |
US7023309B2 (en) | 2001-04-03 | 2006-04-04 | General Electric Company | Permanent magnet assembly and method of making thereof |
US7053743B2 (en) | 2001-04-03 | 2006-05-30 | General Electric Company | Permanent magnet assembly and method of making thereof |
US7148689B2 (en) | 2003-09-29 | 2006-12-12 | General Electric Company | Permanent magnet assembly with movable permanent body for main magnetic field adjustable |
US7423431B2 (en) | 2003-09-29 | 2008-09-09 | General Electric Company | Multiple ring polefaceless permanent magnet and method of making |
US7218195B2 (en) | 2003-10-01 | 2007-05-15 | General Electric Company | Method and apparatus for magnetizing a permanent magnet |
US8468684B2 (en) | 2003-10-01 | 2013-06-25 | General Electric Company | Method and apparatus for magnetizing a permanent magnet |
Also Published As
Publication number | Publication date |
---|---|
EP1072043B1 (en) | 2004-05-06 |
CN1251252C (en) | 2006-04-12 |
CN1263349A (en) | 2000-08-16 |
EP1072043A1 (en) | 2001-01-31 |
WO2000048208A9 (en) | 2001-08-09 |
DE60010385D1 (en) | 2004-06-09 |
AU2751500A (en) | 2000-08-29 |
DE60010385T2 (en) | 2005-05-04 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US6468365B1 (en) | R-T-B sintered permanent magnet | |
CA1106648A (en) | Permanent-magnet alloy | |
EP0134305B1 (en) | Permanent magnet | |
JP2751109B2 (en) | Sintered permanent magnet with good thermal stability | |
US6120620A (en) | Praseodymium-rich iron-boron-rare earth composition, permanent magnet produced therefrom, and method of making | |
EP0242187A1 (en) | Permanent magnet and method of producing same | |
US20100040501A1 (en) | R-T-B Based Rare Earth Permanent Magnet and Method for Production Thereof | |
Kaneko et al. | Recent developments of high-performance NEOMAX magnets | |
EP0657899B1 (en) | Iron-based permanent magnet alloy powders for resin bonded magnets and magnets made therefrom | |
US5181973A (en) | Sintered permanent magnet | |
EP0680054B1 (en) | RE-Fe-B magnets and manufacturing method for the same | |
Kim | Effect of oxygen on magnetic properties of Nd‐Fe‐B magnets | |
EP1072043B1 (en) | Permanent magnetic materials of the r-fe-b type and process of manufacture | |
EP0386286B1 (en) | Rare earth iron-based permanent magnet | |
US4099995A (en) | Copper-hardened permanent-magnet alloy | |
US6669788B1 (en) | Permanent magnetic materials of the Fe-B-R tpe, containing Ce and Nd and/or Pr, and process for manufacture | |
JPH0547533A (en) | Sintered permanent magnet and manufacture thereof | |
Kim et al. | A high performance Nd-Fe-B magnet with improved corrosion resistance | |
US4290826A (en) | Process for the production of cobalt-rare earth alloy powders | |
JP2003217918A (en) | Alloy powder for rare earth sintered magnet superior in magnetization, the rare earth sintered magnet and its manufacturing method | |
WO2000048209A9 (en) | Praseodymium-rich iron-boron-rare earth composition, permanent magnet produced therefrom, and method of making | |
JP4585691B2 (en) | Fe-BR type permanent magnet material containing Ce and Nd and / or Pr and method for producing the same | |
JP3623564B2 (en) | Anisotropic bonded magnet | |
JPH02119105A (en) | Nd-fe-b system sintered magnet | |
JP3247460B2 (en) | Production method of raw material powder for rare earth magnet |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AL AM AT AU AZ BA BB BG BR BY CA CH CU CZ DE DK EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MD MG MK MN MW MX NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT UA UG US UZ VN YU ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): GH GM KE LS MW SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2000905918 Country of ref document: EP |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWP | Wipo information: published in national office |
Ref document number: 2000905918 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 09673045 Country of ref document: US |
|
REG | Reference to national code |
Ref country code: DE Ref legal event code: 8642 |
|
AK | Designated states |
Kind code of ref document: C2 Designated state(s): AL AM AT AU AZ BA BB BG BR BY CA CH CU CZ DE DK EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MD MG MK MN MW MX NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT UA UG US UZ VN YU ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: C2 Designated state(s): GH GM KE LS MW SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG |
|
COP | Corrected version of pamphlet |
Free format text: PAGES 1/5-5/5, DRAWINGS, REPLACED BY NEW PAGES 1/5-5/5; DUE TO LATE TRANSMITTAL BY THE RECEIVING OFFICE |
|
WWG | Wipo information: grant in national office |
Ref document number: 2000905918 Country of ref document: EP |