CA2191093C - Method of making a molded plastic container - Google Patents
Method of making a molded plastic container Download PDFInfo
- Publication number
- CA2191093C CA2191093C CA002191093A CA2191093A CA2191093C CA 2191093 C CA2191093 C CA 2191093C CA 002191093 A CA002191093 A CA 002191093A CA 2191093 A CA2191093 A CA 2191093A CA 2191093 C CA2191093 C CA 2191093C
- Authority
- CA
- Canada
- Prior art keywords
- preform
- molded
- mold
- nitrogen
- plastic container
- 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
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 25
- 239000002991 molded plastic Substances 0.000 title claims description 14
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 90
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 42
- 229920000139 polyethylene terephthalate Polymers 0.000 claims abstract description 33
- 239000012467 final product Substances 0.000 claims abstract description 21
- 238000010926 purge Methods 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 60
- 239000007789 gas Substances 0.000 claims description 19
- 239000007788 liquid Substances 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 7
- 238000000465 moulding Methods 0.000 claims description 5
- 238000013022 venting Methods 0.000 claims description 4
- 230000008016 vaporization Effects 0.000 claims description 2
- 239000005020 polyethylene terephthalate Substances 0.000 abstract description 32
- -1 polyethylene terephthalate Polymers 0.000 abstract description 8
- 239000003570 air Substances 0.000 abstract 1
- 239000012080 ambient air Substances 0.000 abstract 1
- 238000009998 heat setting Methods 0.000 description 26
- 230000008569 process Effects 0.000 description 20
- 238000012360 testing method Methods 0.000 description 20
- 239000004033 plastic Substances 0.000 description 14
- 229920003023 plastic Polymers 0.000 description 14
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 12
- 230000008859 change Effects 0.000 description 11
- 229910002092 carbon dioxide Inorganic materials 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 7
- 230000004888 barrier function Effects 0.000 description 6
- 238000007664 blowing Methods 0.000 description 6
- 229910001873 dinitrogen Inorganic materials 0.000 description 6
- 230000014759 maintenance of location Effects 0.000 description 6
- 230000000930 thermomechanical effect Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 229920001169 thermoplastic Polymers 0.000 description 4
- 239000004698 Polyethylene Substances 0.000 description 3
- 235000013405 beer Nutrition 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 239000001569 carbon dioxide Substances 0.000 description 3
- 239000012809 cooling fluid Substances 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- 239000012815 thermoplastic material Substances 0.000 description 3
- IKHGUXGNUITLKF-UHFFFAOYSA-N Acetaldehyde Chemical compound CC=O IKHGUXGNUITLKF-UHFFFAOYSA-N 0.000 description 2
- 238000000071 blow moulding Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000004416 thermosoftening plastic Substances 0.000 description 2
- 206010013911 Dysgeusia Diseases 0.000 description 1
- 241001278264 Fernandoa adenophylla Species 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 235000014171 carbonated beverage Nutrition 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007850 degeneration Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 235000015203 fruit juice Nutrition 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- 235000021268 hot food Nutrition 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000009420 retrofitting Methods 0.000 description 1
- 238000010583 slow cooling Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005382 thermal cycling Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/48—Moulds
- B29C49/4823—Moulds with incorporated heating or cooling means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/46—Component parts, details or accessories; Auxiliary operations characterised by using particular environment or blow fluids other than air
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/64—Heating or cooling preforms, parisons or blown articles
- B29C49/66—Cooling by refrigerant introduced into the blown article
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/46—Component parts, details or accessories; Auxiliary operations characterised by using particular environment or blow fluids other than air
- B29C2049/4602—Blowing fluids
- B29C2049/4605—Blowing fluids containing an inert gas, e.g. helium
- B29C2049/4608—Nitrogen
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/64—Heating or cooling preforms, parisons or blown articles
- B29C49/6604—Thermal conditioning of the blown article
- B29C2049/6606—Cooling the article
- B29C2049/6607—Flushing blown articles
- B29C2049/6646—Flushing blown articles while keeping the final blowing pressure in the article
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/78—Measuring, controlling or regulating
- B29C49/783—Measuring, controlling or regulating blowing pressure
- B29C2049/7832—Blowing with two or more pressure levels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/78—Measuring, controlling or regulating
- B29C49/786—Temperature
- B29C2049/7864—Temperature of the mould
- B29C2049/78645—Temperature of the mould characterised by temperature values or ranges
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/07—Preforms or parisons characterised by their configuration
- B29C2949/0715—Preforms or parisons characterised by their configuration the preform having one end closed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
- B29C49/06—Injection blow-moulding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/08—Biaxial stretching during blow-moulding
- B29C49/10—Biaxial stretching during blow-moulding using mechanical means for prestretching
- B29C49/12—Stretching rods
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/58—Blowing means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2067/00—Use of polyesters or derivatives thereof, as moulding material
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US41253595A | 1995-03-27 | 1995-03-27 | |
| US08/412,535 | 1995-03-27 | ||
| US08/587,282 | 1996-01-12 | ||
| US08/587,282 US5730914A (en) | 1995-03-27 | 1996-01-16 | Method of making a molded plastic container |
| PCT/US1996/003167 WO1996030190A1 (en) | 1995-03-27 | 1996-03-07 | Method of making a molded plastic container |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2191093A1 CA2191093A1 (en) | 1996-10-03 |
| CA2191093C true CA2191093C (en) | 2000-08-22 |
Family
ID=27021814
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002191093A Expired - Fee Related CA2191093C (en) | 1995-03-27 | 1996-03-07 | Method of making a molded plastic container |
Country Status (9)
| Country | Link |
|---|---|
| EP (1) | EP0760737A4 (es) |
| JP (1) | JPH10501481A (es) |
| CN (1) | CN1064892C (es) |
| AU (1) | AU704903B2 (es) |
| BR (1) | BR9605942A (es) |
| CA (1) | CA2191093C (es) |
| MX (1) | MX9605868A (es) |
| NZ (1) | NZ306047A (es) |
| WO (1) | WO1996030190A1 (es) |
Families Citing this family (27)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1089668C (zh) * | 1999-07-08 | 2002-08-28 | 李缵缨 | 热灌装用p.e.t.容器瓶颈的制造方法 |
| CN1089667C (zh) * | 1999-07-08 | 2002-08-28 | 李缵缨 | 热灌装用p.e.t.容器及其制造方法 |
| US6485669B1 (en) | 1999-09-14 | 2002-11-26 | Schmalbach-Lubeca Ag | Blow molding method for producing pasteurizable containers |
| US6485670B1 (en) | 1999-11-09 | 2002-11-26 | Schmalbach-Lubeca Ag | Blow molding method for producing pasteurizable containers |
| US6514451B1 (en) | 2000-06-30 | 2003-02-04 | Schmalbach-Lubeca Ag | Method for producing plastic containers having high crystallinity bases |
| US6568156B2 (en) * | 2000-06-30 | 2003-05-27 | Schmalbach-Lubeca Ag | Method of providing a thermally-processed commodity within a plastic container |
| US6413466B1 (en) | 2000-06-30 | 2002-07-02 | Schmalbach-Lubeca Ag | Plastic container having geometry minimizing spherulitic crystallization below the finish and method |
| US6626324B1 (en) | 2000-06-30 | 2003-09-30 | Schmalbach-Lubeca Ag | Plastic container having a crystallinity gradient |
| CN100408309C (zh) * | 2002-04-10 | 2008-08-06 | 林子祥 | 热灌装聚酯瓶加工设备 |
| ITRM20020453A1 (it) * | 2002-09-10 | 2004-03-11 | Sipa Spa | Processo e impianto di verniciatura di contenitori. |
| ITRM20020452A1 (it) * | 2002-09-10 | 2004-03-11 | Sipa Spa | Procedimento e dispositivo per il trattamento di rivestimenti |
| JP2007504022A (ja) | 2003-09-05 | 2007-03-01 | エスアイジー テクノロジー リミテッド | 容器ブロー成形方法および装置 |
| FR2921293B1 (fr) * | 2007-09-24 | 2012-11-02 | Sidel Participations | Procede de fabrication de recipients comprenant une operation de depressurisation intermediaire |
| DE102009031154A1 (de) | 2009-06-30 | 2011-01-05 | Krones Ag | Verfahren zum Umrüsten einer Blasmaschine und Blasmaschine |
| AU2010298133A1 (en) * | 2009-09-24 | 2012-04-19 | Plastipak Packaging, Inc. | Stretch blow molded container and method |
| WO2011079917A1 (en) * | 2009-12-17 | 2011-07-07 | Norgren Gmbh | A blow-molding system with a stretch rod including one or more valves, a rod for a blow moulding system and a method for operating a blow-moulding |
| DE102010007541A1 (de) * | 2009-12-23 | 2011-06-30 | KHS Corpoplast GmbH, 22145 | Verfahren und Vorrichtung zur Herstellung von gefüllten Behältern |
| DE102011012664A1 (de) * | 2011-02-28 | 2012-08-30 | Khs Corpoplast Gmbh | Verfahren und Vorrichtung zur Herstellung von mit einem flüssigen Füllgut gefüllten Behältern |
| WO2012103905A1 (de) | 2011-01-31 | 2012-08-09 | Khs Gmbh | Verfahren sowie vorrichtung zum herstellen von mit einem flüssigen füllgut gefüllten behältern |
| CN102642300A (zh) * | 2012-04-28 | 2012-08-22 | 林明茳 | 塑料拉吹机加热式输气管 |
| JP6093686B2 (ja) * | 2013-11-29 | 2017-03-08 | 三菱重工食品包装機械株式会社 | ブロー成形方法および装置 |
| CN104943928A (zh) * | 2015-06-26 | 2015-09-30 | 广州一道注塑机械有限公司 | 一种气辅成型高阻隔瓶坯 |
| CN105690812B (zh) * | 2016-03-16 | 2019-06-21 | 中国科学院理化技术研究所 | 一种高分子材料注塑设备的在线深冷改性装置 |
| WO2019058813A1 (ja) * | 2017-09-20 | 2019-03-28 | 株式会社吉野工業所 | 液体入り容器の製造方法 |
| CN109571914B (zh) * | 2019-01-29 | 2021-05-14 | 海安华驰塑业科技有限公司 | 一种具有温控功能的吹塑装置 |
| CH716011A1 (de) | 2019-03-29 | 2020-09-30 | Alpla Werke Alwin Lehner Gmbh & Co Kg | Blasformwerkzeug für eine Blasformmaschine. |
| CN114407336A (zh) * | 2022-01-08 | 2022-04-29 | 史江腾 | 一种塑料生产用吹塑模具 |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1474044A (en) * | 1974-12-03 | 1977-05-18 | Ici Ltd | Plastics container manufacture |
| FR2389478B1 (es) * | 1977-05-04 | 1980-11-28 | Rhone Poulenc Ind | |
| US4512948A (en) * | 1982-03-03 | 1985-04-23 | Owens-Illinois, Inc. | Method for making poly(ethylene terephthalate) article |
| JPS59129125A (ja) * | 1983-01-17 | 1984-07-25 | Nippon Ester Co Ltd | 熱可塑性ポリエステル容器の製造方法 |
| JPS61227017A (ja) * | 1985-04-01 | 1986-10-09 | Mitsuboshi Belting Ltd | ガス体吹込みによる中空成形体の製造方法およびその装置 |
| US4883631A (en) * | 1986-09-22 | 1989-11-28 | Owens-Illinois Plastic Products Inc. | Heat set method for oval containers |
| US5035931A (en) * | 1988-09-12 | 1991-07-30 | Dai Nippon Insatsu K.K. | Multi-layer parison, multi-layer bottle and apparatus for and method of manufacturing parison and bottle |
| US5182122A (en) * | 1989-08-31 | 1993-01-26 | Nissei Asb Machine Co., Ltd. | Apparatus for stretch blow molding hollow heat-resistant container |
-
1996
- 1996-03-07 EP EP96911261A patent/EP0760737A4/en not_active Withdrawn
- 1996-03-07 MX MX9605868A patent/MX9605868A/es not_active IP Right Cessation
- 1996-03-07 CA CA002191093A patent/CA2191093C/en not_active Expired - Fee Related
- 1996-03-07 CN CN961902477A patent/CN1064892C/zh not_active Expired - Fee Related
- 1996-03-07 WO PCT/US1996/003167 patent/WO1996030190A1/en not_active Application Discontinuation
- 1996-03-07 AU AU54201/96A patent/AU704903B2/en not_active Ceased
- 1996-03-07 NZ NZ306047A patent/NZ306047A/xx unknown
- 1996-03-07 BR BR9605942A patent/BR9605942A/pt not_active IP Right Cessation
- 1996-03-07 JP JP8529420A patent/JPH10501481A/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| NZ306047A (en) | 1999-02-25 |
| WO1996030190A1 (en) | 1996-10-03 |
| AU704903B2 (en) | 1999-05-06 |
| BR9605942A (pt) | 1997-08-12 |
| EP0760737A4 (en) | 1999-08-04 |
| CN1064892C (zh) | 2001-04-25 |
| CA2191093A1 (en) | 1996-10-03 |
| AU5420196A (en) | 1996-10-16 |
| EP0760737A1 (en) | 1997-03-12 |
| CN1148827A (zh) | 1997-04-30 |
| JPH10501481A (ja) | 1998-02-10 |
| MX9605868A (es) | 1997-12-31 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |