FI102911B - Menetelmä massasuspension pH:n stabiloimiseksi ja paperin tuottamiseks i stabiloidusta massasta - Google Patents
Menetelmä massasuspension pH:n stabiloimiseksi ja paperin tuottamiseks i stabiloidusta massasta Download PDFInfo
- Publication number
- FI102911B FI102911B FI972522A FI972522A FI102911B FI 102911 B FI102911 B FI 102911B FI 972522 A FI972522 A FI 972522A FI 972522 A FI972522 A FI 972522A FI 102911 B FI102911 B FI 102911B
- Authority
- FI
- Finland
- Prior art keywords
- pulp suspension
- pulp
- carbon dioxide
- suspension
- alkali metal
- Prior art date
Links
- 239000000725 suspension Substances 0.000 title claims abstract description 76
- 238000000034 method Methods 0.000 title claims abstract description 35
- 230000000087 stabilizing effect Effects 0.000 title claims abstract description 6
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 83
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 41
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 34
- 150000008044 alkali metal hydroxides Chemical class 0.000 claims abstract description 13
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 125
- 230000000694 effects Effects 0.000 claims description 15
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 10
- 239000000945 filler Substances 0.000 claims description 10
- 230000002378 acidificating effect Effects 0.000 claims description 7
- 239000000126 substance Substances 0.000 claims description 7
- 229920001131 Pulp (paper) Polymers 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- 239000000872 buffer Substances 0.000 claims description 5
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 5
- 239000007864 aqueous solution Substances 0.000 claims description 2
- 230000003139 buffering effect Effects 0.000 abstract description 15
- 239000006172 buffering agent Substances 0.000 abstract description 2
- 238000007792 addition Methods 0.000 description 14
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 11
- 238000003860 storage Methods 0.000 description 11
- 229920002678 cellulose Polymers 0.000 description 10
- 239000001913 cellulose Substances 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical compound OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 description 7
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 6
- 238000004026 adhesive bonding Methods 0.000 description 5
- -1 alkyl ketene dimers Chemical class 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 5
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 4
- 239000002253 acid Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 235000011132 calcium sulphate Nutrition 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000003801 milling Methods 0.000 description 3
- 230000007935 neutral effect Effects 0.000 description 3
- 239000013055 pulp slurry Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 235000011149 sulphuric acid Nutrition 0.000 description 3
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 229940037003 alum Drugs 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000010979 pH adjustment Methods 0.000 description 2
- 238000004537 pulping Methods 0.000 description 2
- 235000017557 sodium bicarbonate Nutrition 0.000 description 2
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 235000007688 Lycopersicon esculentum Nutrition 0.000 description 1
- 240000003768 Solanum lycopersicum Species 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910001424 calcium ion Inorganic materials 0.000 description 1
- 239000001175 calcium sulphate Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 230000000779 depleting effect Effects 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000009533 lab test Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910000000 metal hydroxide Inorganic materials 0.000 description 1
- 150000004692 metal hydroxides Chemical class 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 229910021653 sulphate ion Inorganic materials 0.000 description 1
- 238000004448 titration Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/63—Inorganic compounds
- D21H17/64—Alkaline compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Paper (AREA)
- Macromolecular Compounds Obtained By Forming Nitrogen-Containing Linkages In General (AREA)
- Detergent Compositions (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Priority Applications (14)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI972522A FI102911B (fi) | 1997-06-13 | 1997-06-13 | Menetelmä massasuspension pH:n stabiloimiseksi ja paperin tuottamiseks i stabiloidusta massasta |
| IDW991480A ID29300A (id) | 1997-06-13 | 1998-06-12 | Proses untuk stabilisasi ph suspensi pulp dan untuk menghasilkan kertas dari pulp terstabilisasi |
| ES98925673T ES2161057T3 (es) | 1997-06-13 | 1998-06-12 | Proceso de estabilizacion de ph de una suspension de pulpa y para la produccion de papel a partir de la pulpa estabilizada. |
| PT98925673T PT991811E (pt) | 1997-06-13 | 1998-06-12 | Um processo para estabilizar o ph de uma suspensao de pasta de papel e para produzir papel a partir da pasta de papel estabilizada |
| JP50168899A JP2002504193A (ja) | 1997-06-13 | 1998-06-12 | パルプ懸濁液のｐＨを安定化するための及び安定化されたパルプから紙を製造するためのプロセス |
| CA002293405A CA2293405C (en) | 1997-06-13 | 1998-06-12 | A process for stabilizing the ph of a pulp suspension and for producing paper from the stabilized pulp |
| DE0991811T DE991811T1 (de) | 1997-06-13 | 1998-06-12 | VERFAHREN ZUR STABLISIERUNG DES pHS EINER ZELLSTOFFAUFSCHLÄMMUNG UND ZUR PAPIERHERSTELLUNG |
| AT98925673T ATE204936T1 (de) | 1997-06-13 | 1998-06-12 | Verfahren zur stablisierung des phs einer zellstoffaufschlämmung und zur papierherstellung |
| EP98925673A EP0991811B1 (en) | 1997-06-13 | 1998-06-12 | A PROCESS FOR STABILIZING THE pH OF A PULP SUSPENSION AND FOR PRODUCING PAPER FORM THE STABILIZED PULP |
| US09/445,710 US6991705B2 (en) | 1997-06-13 | 1998-06-12 | Process for stabilizing the PH of a pulp suspension and for producing paper from the stabilized pulp |
| AU77696/98A AU731377B2 (en) | 1997-06-13 | 1998-06-12 | A process for stabilizing the pH of a pulp suspension and for producing paper from the stabilized pulp |
| DE69801504T DE69801504T2 (de) | 1997-06-13 | 1998-06-12 | VERFAHREN ZUR STABLISIERUNG DES pHS EINER ZELLSTOFFAUFSCHLÄMMUNG UND ZUR PAPIERHERSTELLUNG |
| PCT/FI1998/000509 WO1998056988A1 (en) | 1997-06-13 | 1998-06-12 | A PROCESS FOR STABILIZING THE pH OF A PULP SUSPENSION AND FOR PRODUCING PAPER FORM THE STABILIZED PULP |
| NO19996070A NO328511B1 (no) | 1997-06-13 | 1999-12-09 | Fremgangsmate for a stabilisere pH i en pulpsuspensjon og fremstilling av papir av stabilisert pulp |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI972522 | 1997-06-13 | ||
| FI972522A FI102911B (fi) | 1997-06-13 | 1997-06-13 | Menetelmä massasuspension pH:n stabiloimiseksi ja paperin tuottamiseks i stabiloidusta massasta |
Publications (4)
| Publication Number | Publication Date |
|---|---|
| FI972522A0 FI972522A0 (fi) | 1997-06-13 |
| FI972522L FI972522L (fi) | 1998-12-14 |
| FI102911B1 FI102911B1 (fi) | 1999-03-15 |
| FI102911B true FI102911B (fi) | 1999-03-15 |
Family
ID=8549048
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FI972522A FI102911B (fi) | 1997-06-13 | 1997-06-13 | Menetelmä massasuspension pH:n stabiloimiseksi ja paperin tuottamiseks i stabiloidusta massasta |
Country Status (13)
| Country | Link |
|---|---|
| US (1) | US6991705B2 (enExample) |
| EP (1) | EP0991811B1 (enExample) |
| JP (1) | JP2002504193A (enExample) |
| AT (1) | ATE204936T1 (enExample) |
| AU (1) | AU731377B2 (enExample) |
| CA (1) | CA2293405C (enExample) |
| DE (2) | DE69801504T2 (enExample) |
| ES (1) | ES2161057T3 (enExample) |
| FI (1) | FI102911B (enExample) |
| ID (1) | ID29300A (enExample) |
| NO (1) | NO328511B1 (enExample) |
| PT (1) | PT991811E (enExample) |
| WO (1) | WO1998056988A1 (enExample) |
Families Citing this family (33)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI102911B (fi) * | 1997-06-13 | 1999-03-15 | Aga Ab | Menetelmä massasuspension pH:n stabiloimiseksi ja paperin tuottamiseks i stabiloidusta massasta |
| FI103520B1 (fi) | 1998-03-03 | 1999-07-15 | Aga Ab | Parannetut paperinvalmistusmenetelmät |
| SE514687C2 (sv) * | 1999-07-09 | 2001-04-02 | Sca Graphic Res Ab | Metod för eliminering av skadliga substanser i en processvätska |
| FI20000806A7 (fi) * | 2000-04-05 | 2001-10-06 | Aga Ab | Menetelmä lignoselluloosamassan valkaisemiseksi |
| FI111177B (fi) * | 2001-12-12 | 2003-06-13 | Linde Ag | Laite ja menetelmä teollisuusprosessin alkaliteetin ja pH-arvon ohjaamiseksi |
| US7056419B2 (en) * | 2002-09-30 | 2006-06-06 | American Air Liquide, Inc. | Methods for modifying electrical properties of papermaking compositions using carbon dioxide |
| US20040256069A1 (en) * | 2003-06-18 | 2004-12-23 | Saucedo Victor M. | Estimation and control in the wet end using CO2 |
| EP1816259A1 (fr) * | 2006-02-07 | 2007-08-08 | L'AIR LIQUIDE, Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude | Utilisation du dioxyde de carbone pour optimiser le pH dans la partie humide de la machine à papier |
| PT1996762T (pt) * | 2006-03-13 | 2017-01-31 | Fpinnovations | Branqueamento de polpa com dióxido de cloro quase neutro |
| FI20070126A0 (fi) * | 2006-09-08 | 2007-02-13 | Linde Ag | Menetelmä hartsin poistamiseksi massasta ja hiilidioksidin tai (bi)karbonaatin käyttö tähän tarkoitukseen |
| US8034203B2 (en) * | 2007-04-13 | 2011-10-11 | United States Gypsum Company | Gypsum wallboard with improved nail pull strength and the method for making same |
| FI120651B (fi) * | 2007-04-30 | 2010-01-15 | Linde Ag | Menetelmä energiankulutuksen vähentämiseksi massasuspension jauhatuksessa paperinvalmistusprosessissa |
| FI121114B (fi) | 2007-05-04 | 2010-07-15 | Kemira Oyj | Ditioniitin valmistusmenetelmä |
| FI20075503A7 (fi) * | 2007-07-03 | 2008-06-19 | Linde Ag | Menetelmä paperin valmistamiseksi ja happo/emäskäsittelyn käyttö paperin valmistuksessa |
| FI20085797L (fi) * | 2008-08-27 | 2010-02-28 | Linde Ag | Menetelmä puskuriliuoksen valmistamiseksi paperinvalmistusprosessissa |
| FI122898B (fi) * | 2009-01-14 | 2012-08-31 | Linde Ag | Menetelmä selluloosamassan pH:n säätämiseksi, sellun tai paperin valmistus selluloosamassasta ja (bi)karbonaattipoiston käyttö haponkulutuksen vähentämiseksi |
| SI2281853T1 (sl) | 2009-08-05 | 2012-09-28 | Omya Development Ag | Uporaba 2-amino-2-metil-1-propanola kot aditiva v vodnih suspenzijah materialov, ki obsegajo kalcijev karbonat |
| PT2354191E (pt) | 2010-01-25 | 2013-07-10 | Omya Development Ag | Utilização de 2-((1-metilpropil)amino)etanol como aditivo em suspensões aquosas de materiais compreendendo carbonato de cálcio |
| ATE530607T1 (de) | 2010-01-27 | 2011-11-15 | Omya Development Ag | Verwendung polyethyleniminen als zusatz in wässrigen suspensionen aus calciumcarbonathaltigen materialien |
| FI125826B (fi) * | 2010-08-04 | 2016-02-29 | Nordkalk Oy Ab | Menetelmä paperin tai kartongin valmistamiseksi |
| ES2411109T3 (es) | 2010-06-07 | 2013-07-04 | Omya Development Ag | Uso de 2-aminoetanol como aditivo en suspensiones acuosas de materiales que comprenden carbonato cálcico |
| CN103392039A (zh) | 2011-01-25 | 2013-11-13 | 巴斯夫欧洲公司 | 生产用于制造纸制品的半浆的方法 |
| CA2825337A1 (en) | 2011-01-25 | 2012-08-02 | Basf Se | Manufacturing a papery article |
| WO2012143323A1 (en) * | 2011-04-20 | 2012-10-26 | Basf Se | Cellulosic barrier packaging material |
| EP2824147B1 (en) | 2013-07-12 | 2016-01-20 | Omya International AG | Use of 2-amino-2-ethyl-1,3-propanediol as additive in aqueous suspensions of calcium carbonate-comprising materials while maintaining stable suspension conductivity |
| BR122018076176B1 (pt) | 2014-12-18 | 2021-06-01 | Ecolab Usa Inc | Método para formar ácido peroxifórmico, método para tratar uma superfície, método para tratar um biofilme em uma superfície e método para desinfetar uma superfície da pele |
| US11040902B2 (en) | 2014-12-18 | 2021-06-22 | Ecolab Usa Inc. | Use of percarboxylic acids for scale prevention in treatment systems |
| US9845290B2 (en) | 2014-12-18 | 2017-12-19 | Ecolab Usa Inc. | Methods for forming peroxyformic acid and uses thereof |
| AU2016369505B2 (en) | 2015-12-16 | 2019-08-15 | Ecolab Usa Inc. | Peroxyformic acid compositions for membrane filtration cleaning |
| EP3442334B9 (en) | 2016-04-15 | 2023-08-02 | Ecolab USA Inc. | Performic acid biofilm prevention for industrial co2 scrubbers |
| EP3554238A4 (en) | 2016-12-15 | 2020-05-27 | Ecolab USA Inc. | PERFORMIC ACID COMPOSITIONS FOR CLEANING FILM FILTERS IN ENERGY SERVICES |
| EP3561002B1 (en) | 2018-04-23 | 2020-08-12 | Omya International AG | Use of additives containing primary alkanolamines in aqueous mineral suspensions |
| EP3806637A1 (en) | 2018-06-15 | 2021-04-21 | Ecolab USA Inc. | On site generated performic acid compositions for teat treatment |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB815247A (en) * | 1955-07-19 | 1959-06-24 | Columbia Cellulose Company Ltd | Bleaching woob pulps |
| SE8605510L (sv) * | 1986-12-22 | 1987-09-17 | Aga Ab | Sett vid tvettning av massa |
| AU1175188A (en) * | 1987-02-27 | 1988-09-01 | Boc Group, Inc., The | Use of gaseous carbon dioxide to adjust ph of cellulosic pulp |
| SE461860B (sv) | 1989-02-13 | 1990-04-02 | Mo Och Domsjoe Ab | Foerfarande foer framstaellning av papper och bestruket papper varvid baspappret innehaaller precipiterat kalciumkarbonat |
| CA2069713C (en) * | 1992-05-27 | 2003-05-13 | Derek Hornsey | Carbon dioxide in neutral and alkaline sizing processes |
| FI102911B (fi) * | 1997-06-13 | 1999-03-15 | Aga Ab | Menetelmä massasuspension pH:n stabiloimiseksi ja paperin tuottamiseks i stabiloidusta massasta |
| US6086714A (en) * | 1997-10-24 | 2000-07-11 | Praxair Technology, Inc. | Process for adjusting the alkalinity of pulp slurry in a broke pulper using carbon dioxide |
| FI111177B (fi) * | 2001-12-12 | 2003-06-13 | Linde Ag | Laite ja menetelmä teollisuusprosessin alkaliteetin ja pH-arvon ohjaamiseksi |
-
1997
- 1997-06-13 FI FI972522A patent/FI102911B/fi not_active IP Right Cessation
-
1998
- 1998-06-12 US US09/445,710 patent/US6991705B2/en not_active Expired - Lifetime
- 1998-06-12 ES ES98925673T patent/ES2161057T3/es not_active Expired - Lifetime
- 1998-06-12 DE DE69801504T patent/DE69801504T2/de not_active Expired - Lifetime
- 1998-06-12 ID IDW991480A patent/ID29300A/id unknown
- 1998-06-12 AT AT98925673T patent/ATE204936T1/de active
- 1998-06-12 JP JP50168899A patent/JP2002504193A/ja not_active Ceased
- 1998-06-12 AU AU77696/98A patent/AU731377B2/en not_active Ceased
- 1998-06-12 EP EP98925673A patent/EP0991811B1/en not_active Expired - Lifetime
- 1998-06-12 DE DE0991811T patent/DE991811T1/de active Pending
- 1998-06-12 PT PT98925673T patent/PT991811E/pt unknown
- 1998-06-12 WO PCT/FI1998/000509 patent/WO1998056988A1/en not_active Ceased
- 1998-06-12 CA CA002293405A patent/CA2293405C/en not_active Expired - Lifetime
-
1999
- 1999-12-09 NO NO19996070A patent/NO328511B1/no not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| WO1998056988A1 (en) | 1998-12-17 |
| ID29300A (id) | 2001-08-16 |
| FI972522L (fi) | 1998-12-14 |
| NO328511B1 (no) | 2010-03-08 |
| AU731377B2 (en) | 2001-03-29 |
| NO996070L (no) | 1999-12-09 |
| JP2002504193A (ja) | 2002-02-05 |
| US6991705B2 (en) | 2006-01-31 |
| DE69801504D1 (de) | 2001-10-04 |
| ES2161057T3 (es) | 2001-11-16 |
| CA2293405A1 (en) | 1998-12-17 |
| EP0991811A1 (en) | 2000-04-12 |
| PT991811E (pt) | 2001-12-28 |
| AU7769698A (en) | 1998-12-30 |
| EP0991811B1 (en) | 2001-08-29 |
| CA2293405C (en) | 2006-08-08 |
| FI102911B1 (fi) | 1999-03-15 |
| NO996070D0 (no) | 1999-12-09 |
| DE991811T1 (de) | 2000-08-17 |
| DE69801504T2 (de) | 2002-04-25 |
| FI972522A0 (fi) | 1997-06-13 |
| ATE204936T1 (de) | 2001-09-15 |
| US20030150570A1 (en) | 2003-08-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FG | Patent granted |
Owner name: AGA AKTIEBOLAG |
|
| MA | Patent expired |