CN1168657A - Process for manufacturing a venting cap - Google Patents
Process for manufacturing a venting cap Download PDFInfo
- Publication number
- CN1168657A CN1168657A CN95196598A CN95196598A CN1168657A CN 1168657 A CN1168657 A CN 1168657A CN 95196598 A CN95196598 A CN 95196598A CN 95196598 A CN95196598 A CN 95196598A CN 1168657 A CN1168657 A CN 1168657A
- Authority
- CN
- China
- Prior art keywords
- lid
- film
- seat cover
- salient
- technology
- 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.)
- Granted
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D51/00—Closures not otherwise provided for
- B65D51/16—Closures not otherwise provided for with means for venting air or gas
- B65D51/1605—Closures not otherwise provided for with means for venting air or gas whereby the interior of the container is maintained in permanent gaseous communication with the exterior
- B65D51/1616—Closures not otherwise provided for with means for venting air or gas whereby the interior of the container is maintained in permanent gaseous communication with the exterior by means of a filter
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Closures For Containers (AREA)
- Prevention Of Fouling (AREA)
- Viewfinders (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Gas Exhaust Devices For Batteries (AREA)
- Self-Closing Valves And Venting Or Aerating Valves (AREA)
Abstract
The present invention is a venting cap (1) with a hole (4) and a semi-permeable membrane (7). The membrane is fitted in a housing (6) of particular dimensions which is in turn fitted in a protrusion (5) corresponding to the hole in the cap. The present invention further encompasses a process for the manufacture of the cap.
Description
Technical field
The present invention relates to encapsulate the field of the liquid substance that produces gas, relate more specifically to ventilating cover.
Background
Ventilative problem is well-known in the art.Really well-known, some liquid substance produces gas, and this may cause the rising of pressure in a container that this type of liquid substance is housed.This type of material is generally hydrogen peroxide or other bleaching liquid and soda.
Deal with this pressure if do not take preventive measures and raise, the container that this material is housed may be subjected to serious stress, and this stress causes container bulging or stress cracking usually.Bulging refers to container deformation, and stress cracking may cause leakage or even blast.Therefore for fear of this class phenomenon, must make container ventilative, promptly generator makes and can discharge elevated pressure in the container.In other words, must make the gas of liquid substance generation can escape to surrounding environment by generator, keep the container no leak simultaneously.
A kind of method that reaches this point provides a kind of lid with holes and one and is inserted in the film that Gaizhonggai is lived this hole.This film can see through gas but can not see through liquid.
Use semipermeable membrane to have several problems.
First problem is that semipermeable membrane is an expensive material.Therefore an object of the present invention is to provide a kind of ventilating cover that uses the least possible membrane material.This purpose means not only uses little film, and provides the technology of making this lid, this technology can significantly reduce the wastage of membrane material, promptly not be used to make the membrane material amount of lid.This technology should have the needed high productivity of modern industry certainly concurrently.
In the art, usually film is designed to be force-fitted in the lid of laying film.This is a kind of quite simple technology, because it does not need to be used for film is fixed on special device on the lid.But in the sort of configuration, the inside dimension of film and lid the same big be very basic, yet this is a N/R from the viewpoint of permeability.And this means that being necessary for every kind of lid develops a kind of newly-designed film with each lid.Therefore another object of the present invention provides a kind of gas permeable devices with maximum adaptation, and it can be applicable to the lid of extremely multiple class.
The another kind of comformability that needs is the comformability of membrane material.In fact, have many different purposes to breathe freely, and each these different purposes may need different membrane materials.
Another problem of film is that they are made with the article of rapid wear usually, is owing to be commonly used to make their material on the one hand, is because they are extremely thin usually on the other hand.Therefore in the process of film being inserted in the lid, they may be highly susceptible to damaging.Therefore another object of the present invention is not need special safeguard procedures in described insertion process.
In US Patent 4,765, provide a kind of device in 499, the lining of wherein a little film being packed into, its size is corresponding to the internal diameter of the lid that holds this device.This device does not satisfy purpose of the present invention because it can only be fit to sizing lid, be that it can not provide required comformability.Secondly, US Patent 4,765, the device in 499 can not obtain with a kind of technology that satisfies all above-mentioned purposes.In fact, US Patent 4,765,499 do not disclose any suitable technology at all.
In Australian Patent 9341259, disclose a kind of ventilating cover, wherein a little film has been fixed on the inside face of cap topwall with ultrasonic welding.Because ultrasonic welding is the basic demand that forms this device, so be very restricted in order to the suitable material of making this device, promptly people can only utilize the material that can use ultrasonic welding.Therefore the device of Australian Patent 9341259 can not provide required comformability.
Summary of the invention
In one embodiment, the present invention includes a kind of technology of making ventilating cover, described technology comprises the following steps:
Form one and comprise roof and the lid of sidewall of dangling, described roof or sidewall comprise in a tubular form a salient basically that stretches out from them, and described lid comprises a hole by described roof or sidewall thickness, and this hole is corresponding to described salient;
Form a seat cover, in this cover film is installed, the cross section outside dimension of described seat cover is less than the cross section inside dimension of described sidewall;
To have the described seat cover that installs film then assembles with described salient in the described lid.
In a kind of highly preferred embodiment of this embodiment, having the seat cover that installs film is to make with folder thing injection molding method (insert injection molding).
In second embodiment, the present invention also comprises a kind of by the available ventilating cover of above-mentioned technology, the sidewall (3) that described lid comprises roof (2) and dangles, described roof or sidewall comprise in a tubular form a salient (5) basically that stretches out from them, described lid also comprises a hole (4) by described roof or sidewall thickness, this hole is corresponding to described salient, described lid also comprises a semipermeable membrane (7), described film utilizes the seat cover (6) of this film of having packed into and installs in the described lid, described seat cover assembles with the salient of lid, and the cross section outside dimension of described seat cover is less than the cross section inside dimension of described sidewall.
The accompanying drawing summary
Fig. 1 and Fig. 2 are the side cross-sectional view according to lid of the present invention;
Fig. 3 is a kind of scheme drawing that is suitable for realizing the equipment of technology of the present invention;
Fig. 4 is a seat cover and the scheme drawing of the mutual coaxial preferred embodiment of film.
Detailed Description Of The Invention
The technology that to understand the manufacturing lid behind the cap structure is better being described.Therefore in one embodiment, the present invention includes a kind of ventilating cover (1).Can make with various materials according to lid of the present invention, particularly suitable material comprises (heat) thermoplastic polymer or copolymer, comprises polyethylene (high density and lower density), polypropylene, polystyrene, polyester, polyvinylchloride, polycarbonate, nylon, PETG (glycols modification polyethylene terephthalate).
The sidewall (3) that lid (1) comprises roof (2) and dangles.Lid for example by force fit, be threaded, method such as engaging matches with the neck of container (8) and is fixed on the container neck.Lid comprises a hole (4) by roof or sidewall thickness, and the gas that this hole produces internal tank can escape into surrounding environment.Be appreciated that in the lid one or several hole can be arranged.
Lid also comprises in a tubular form a salient (5) basically that stretches out from sidewall or roof.This salient can stretch to inside, promptly extend towards internal tank from roof or inside surface of side wall as shown in Figure 1, perhaps stretches to the outside from this surface as shown in Figure 2.Under latter event, if roof or sidewall are enough thick, this salient is formed with holes so, is perhaps formed by the periphery of roof that limits this hole or sidewall more precisely.Basically this salient should be corresponding with this hole." correspondence " herein means that this salient must center on this hole, after being loaded into salient with convenient seat cover (6) that illustrates later and its film, when lid covered on container, any contact between this hole and the internal tank at least must be by the part of film (7).As illustrated in the following technology description of the present invention, this salient can be for example molded with lid, perhaps can for example fit together with lid by bonding, friction welding, close fit etc. after this salient moulding.
This lid also comprises a semipermeable membrane (7)." semi-permeable " is understood that this film is enough to see through the gas that internal tank produces, so that these gases can be escaped to surrounding environment, be enough to make the material that is equipped with in the container can not permeate in the past simultaneously, so that prevent significant leakage, preferably prevent all leakages.The invention is not restricted to the membrane material of any particular type.The material that is suitable for comprises polyethylene (high density and lower density), polypropylene, polyester, nylon, PTFE (polytetrafluoroethylene).Preferred film material for this purposes is:
By the nonwoven, spunbond type polyethylene film material that E.I.Du Pont Company (Du Pont company) sells with the Tyvek trademark, wherein handling to obtain the impermeable Tyvek10 type of high liquid with fluorocarbon is most preferred material;
The utilization of being sold with the Versapor trademark by the graceful scientific company of gill (Gelman Sciencescompany) on No. 600, SouthWagner road, Michigan, USA (MI 48106) Ann Arbor city (Ann Arbor) provides the acrylic copolymer that pours on the nonwoven substrate (nylon or polyethylene terephthalate (pET)) of hydrophobic fluoro-moner post-processing;
In lid of the present invention, in the film present cover of assembling (6), the seat cover is assembled together with salient (5) again.Below the description of making the technology that lid of the present invention uses has been illustrated film (7) is how to assemble in the present cover (6).This seat cover and salient (5) can also comprise various anchor fittings.Ridge that matches and groove that suitable anchor fitting comprises matching thread and is used for described seat cover is engaged or snaps in around described salient described salient.Seat cover (6) and salient (7) also can be bonding simply, friction welding or close fit together.And salient and seat cover can be assembled together, thereby support roof or sidewall securely.For example, salient can be a pipe, at its end a flange that dangles is arranged.This salient is introduced by this hole from the either side of lid then, makes this flange be placed on roof or the sidewall.The opposite side and the salient that make seat cover on described either side then are assembled together.
Another Fundamentals of the present invention are the cross section outside dimension (dH) of described seat cover cross section inside dimensions (dS) less than described sidewall.
Equally, having the suitable seat cover that assembles film can buy.Size is particularly suitable for the seat cover of ventilating cover can be from gondola Zola Predosa (bo), and 40069, the GVS company of Via Rome50 buys.
As can be seen, lid of the present invention provides very big comformability for the design aspect at various lids that can be fitted into this kind seat cover and seat cover.In fact, the connection between seat cover and the lid and unlike the prior art device that great majority have proposed, depend on the inside dimension of sidewall and/or container neck.And only need a kind of definite salient size, this existing lid of can a kind of categorical mode packing into.Because same reason, the size of lid is no longer depended in the assembling of film in lid, and the present invention allows to use less film.The present invention allows to use the film little or littler than the surface in hole as the surface in hole.Preferably, its surface of the film of Shi Yonging is at most 25% to 50% of roof inside face herein, preferably is at most 5% to 10%.
Another advantage is that this film and the seat cover part that covers this film should be coaxial, the explanation in the technology of back is described of its reason.Also advantage is that the thickness (t) of seat cover should be as far as possible little in it covers the zone of film at least, and preferably 3mm is to 10mm, and most preferred for 1mm arrives 3mm, its reason illustrates in the back.
A kind of lid of the present invention can be made with the technology of another embodiment of the invention.In it defined the most widely, this technology comprised the following steps:
Form one and comprise roof and the lid of sidewall of dangling, described roof or sidewall comprise in a tubular form a salient basically that stretches out from them; Described lid comprises a hole by described roof or sidewall thickness, and this hole is corresponding to salient;
Form a seat cover, in this cover film is installed, the cross section outside dimension of described seat cover is less than the cross section inside dimension of described sidewall;
The described salient that will have the described seat cover that installs film and described lid then assembles.First and second steps are certainly carried out to definite sequence with any, but third step carries out after can only two steps are finished in front again.
The first step of enumerating is corresponding to the shaping of lid, and it has hole and salient but does not have a seat cover and a film.It can carry out with any employed for this purpose technology, such as injection molding method, blow moulding, method for hot forming, injection blow molding method.This step can or be finished in the operation several times in independent single job.For example lid can be molded in operation for the first time, and the hole in the roof can get out in the operation for the second time.Salient can separately be made, but advantageously with lid make, for example by molded method.The end product of this step is a lid that has hole and corresponding salient, and it is to pack that to have the seat cover that installs film ready into.
Second step of enumerating is to make in seat cover and the present cover film is installed.In a highly preferred embodiment of the present invention, with reference to Fig. 3, this step can be finished with a kind of " folder thing molded operation ", wherein:
A membrane material sheet (9) is sent into an equipment; This membrane material sheet is preferably sent into by a volume membrane material;
In described equipment, cut out a film at least and it is placed in the mould that will form described seat cover in it from described diaphragm.Advantageously, the cutting of film and its arrangement in this mould can utilize a bar (10) that has sharp-pointed periphery and be pushed in the mould (11) to finish, and this membrane material sheet is positioned between described bar and the mould at first.In this embodiment, the cutting of film and its arrangement in mould are finished basically simultaneously.This way advantageous particularly is because it has avoided the needs of additional operations on frangible membrane material.
Then, center on described this cover of film molding basically in a kind of mode that this film is fixed in the described seat cover." basically around " in case mean herein finish after, this step will produce one and have the seat that installs film and cover, wherein two of this film surfaces can ingress of air, but film is closely remained in this cover.
In order to improve the capacity rating that band installs the seat cover of film, advantageously the equipment of Shi Yonging comprises a plurality of mold cavities of a plurality of covers being operated and had respective rods simultaneously.
In order to reduce the waste of membrane material as far as possible, film should be coaxial basically with the seat cover part that covers this film.In fact, with reference to Fig. 4 .1, the alignment (along axis A) of seat cover and film produces the less diaphragm portion of not utilizing, otherwise, shown in Fig. 4 .2, if seat cover (axis A) and film (axis A ') disalignment, the very large part of the diaphragm of representing with shade line has been wasted so, and the only sub-fraction of this diaphragm material is used to make film.Based on same reason, highly preferably, the thickness (t) of seat cover at least should be as far as possible little in it covers the zone of this film, because seat covers the part that be not used to make film of thickness corresponding to the membrane material sheet.Preferably seat cover thickness should most preferably be less than 1mm less than 5mm.
In the selection process of this specification sheets, the surface that is not used in the manufacturing film of described membrane material sheet preferably less than 50%, more preferably is less than 25% less than 80% of membrane material sheet total surface.
Film is installed to this technology in the seat cover can be fully to be separated with the remainder of described technology and carries out.Equally, be with the suitable seat cover that installs film to buy.Size is specially adapted to the seat cover of ventilating cover can be from gondola Zola Predosa (bo), and 40069, the GVS company of Via Rome 50 has bought.
The third step of enumerating is that the seat cover that the band that will produce in second step installs film is assembled in the lid of producing in the first step.This step is not had specific restriction, and this step depends on that basically whether seat cover and lid have adapting device, if having, so just depend on the character of these devices.Therefore that proper operation in this third step can comprise is bonding, close fit, friction welding, snap lock or the seat cover is tightened in the lid.Close fit can be a preferable methods because of its rapidity.
Claims (14)
1. technology of making ventilating cover, described technology comprises the following steps:
Form one and comprise roof and the lid of sidewall of dangling, described roof or sidewall comprise in a tubular form a salient basically that stretches out from them, and described lid comprises a hole by described roof or sidewall thickness, and this hole is corresponding to described salient;
Form a seat cover, this cover has the film that is installed in wherein, and the cross section outside dimension of described seat cover is less than the cross section inside dimension of described sidewall;
The described salient that will have the described seat cover that installed film and described lid then assembles.
2. a technology according to claim 1 is characterized in that, the step that the seat cover of film has been installed in one of described formation therein comprises to be sent into a membrane material sheet in the equipment; At least cut out a film and it is placed in the mould from described diaphragm, this cover is shaped around this film basically in a kind of mode that described film is fixed in the described seat cover in mould.
3. a technology according to claim 2 is characterized in that, the step that the step of described cutting film and described film with well cutting are placed in the described mould is finished basically simultaneously.
4. one kind according to claim 2 and 3 described technologies, it is characterized in that described equipment comprises a plurality of mold cavities that a plurality of covers are operated simultaneously.
5. a technology according to claim 4 is characterized in that, the surface that is not used to make film of described membrane material sheet preferably less than 50%, more preferably is less than 25% less than 80% of described membrane material sheet total surface.
6. ventilating cover that can obtain by the technology that requires according to aforesaid right, the sidewall (3) that described lid comprises roof (2) and dangles, described roof or sidewall comprise in a tubular form a salient (5) basically that stretches out from them, described lid also comprises a hole (4) by described roof or sidewall thickness, described hole is corresponding to described salient, described lid also comprises a semipermeable membrane (7), described film utilizes the seat cover (6) of the described film of having packed into to install in the described lid, described seat cover assembles with the salient of lid, and the cross section outside dimension of described seat cover is less than the cross section inside dimension of described sidewall.
7. one kind requires described technology or lid according to aforesaid right, it is characterized in that, the part that covers this film of described film and described seat cover is coaxial basically.
8. one kind requires described technology or lid according to aforesaid right, it is characterized in that, the thickness (t) of described seat cover at least in it covers the zone of described film for 3mm arrives 10mm, be preferably 1mm to 3mm.
9. one kind requires described technology or lid according to aforesaid right, it is characterized in that, described salient and described seat cover comprise anchor fitting.
10. technology according to claim 9 or lid is characterized in that described anchor fitting comprises matching thread.
11. technology according to claim 9 or lid is characterized in that described anchor fitting comprises ridge and the groove that cooperatively interacts, and are used for described seat cover around described salient engaging or snap in this salient.
12. technology according to claim 9 or lid is characterized in that, described anchor fitting comprise with described seat cover around described salient close fit or close fit in this salient.
13. one kind according to described technology of claim 1～7 or lid, it is characterized in that, described seat cover and described salient are bonded together.
14. one kind according to described technology of claim 1～7 or lid, it is characterized in that, described seat cover and described salient be friction welding together.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP94870161.0 | 1994-10-13 | ||
| EP94870161A EP0706954B1 (en) | 1994-10-13 | 1994-10-13 | A process for manufacturing a venting cap, and a venting cap thus obtained |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1168657A true CN1168657A (en) | 1997-12-24 |
| CN1064629C CN1064629C (en) | 2001-04-18 |
Family
ID=8218677
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN95196598A Expired - Fee Related CN1064629C (en) | 1994-10-13 | 1995-10-13 | Process for manufacturing a venting cap |
Country Status (14)
| Country | Link |
|---|---|
| EP (1) | EP0706954B1 (en) |
| JP (1) | JPH10507430A (en) |
| CN (1) | CN1064629C (en) |
| AT (1) | ATE201178T1 (en) |
| AU (1) | AU3832595A (en) |
| CA (1) | CA2202635A1 (en) |
| CZ (1) | CZ103697A3 (en) |
| DE (1) | DE69427229D1 (en) |
| DK (1) | DK0706954T3 (en) |
| ES (1) | ES2156148T3 (en) |
| GR (1) | GR3035887T3 (en) |
| HU (1) | HU220361B (en) |
| PT (1) | PT706954E (en) |
| WO (1) | WO1996011857A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102528449A (en) * | 2012-01-17 | 2012-07-04 | 广州洁特生物过滤制品有限公司 | Assembly machine of breathable covers of disposable cell culture flasks |
| CN112550937A (en) * | 2020-11-27 | 2021-03-26 | 绍兴永耀电器有限公司 | Ventilative leak protection explosion-proof bottle |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5752629A (en) * | 1996-04-12 | 1998-05-19 | The Procter & Gamble Company | Passive venting for pump dispensing device |
| JP4443386B2 (en) * | 2004-11-09 | 2010-03-31 | 三菱電機株式会社 | Electronic control equipment |
| US7993609B2 (en) | 2008-12-30 | 2011-08-09 | Sterilucent, Inc. | Package for chemicals |
| JP5666336B2 (en) * | 2011-02-15 | 2015-02-12 | 東海興業株式会社 | Composite molded product |
| WO2023274529A1 (en) * | 2021-06-30 | 2023-01-05 | Hoffmann Neopac Ag | Sterile dropper tube |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2403244C3 (en) * | 1974-01-24 | 1980-12-04 | Riedel-De Haen Ag, 3016 Seelze | For gases permeable, liquid-tight shut-off device |
| US4136796A (en) * | 1974-04-11 | 1979-01-30 | Greif Bros. Corporation | Vented closure |
| US4337104A (en) * | 1978-10-10 | 1982-06-29 | Becton, Dickinson And Company | Method for manufacturing a roller bottle |
| CN87203820U (en) * | 1987-03-16 | 1988-04-06 | 澄海县东里镇塑料二厂 | Permeable and overflow-proof cap for liquid container |
| US4765499A (en) * | 1987-12-29 | 1988-08-23 | Von Reis Charles | Filter cap |
| DE3903509A1 (en) * | 1989-02-06 | 1990-08-09 | Unilever Nv | CONTAINER CAP WITH INTERNAL PRESSURE LIMITER |
| DE9208612U1 (en) * | 1992-06-26 | 1993-10-28 | Huber Verpackungen Gmbh & Co | Tin containers |
-
1994
- 1994-10-13 DK DK94870161T patent/DK0706954T3/en active
- 1994-10-13 PT PT94870161T patent/PT706954E/en unknown
- 1994-10-13 ES ES94870161T patent/ES2156148T3/en not_active Expired - Lifetime
- 1994-10-13 DE DE69427229T patent/DE69427229D1/en not_active Expired - Lifetime
- 1994-10-13 EP EP94870161A patent/EP0706954B1/en not_active Expired - Lifetime
- 1994-10-13 AT AT94870161T patent/ATE201178T1/en active
-
1995
- 1995-10-13 AU AU38325/95A patent/AU3832595A/en not_active Abandoned
- 1995-10-13 CA CA002202635A patent/CA2202635A1/en not_active Abandoned
- 1995-10-13 HU HU9702418A patent/HU220361B/en not_active IP Right Cessation
- 1995-10-13 JP JP8513394A patent/JPH10507430A/en active Pending
- 1995-10-13 WO PCT/US1995/013211 patent/WO1996011857A1/en not_active Application Discontinuation
- 1995-10-13 CN CN95196598A patent/CN1064629C/en not_active Expired - Fee Related
- 1995-10-13 CZ CZ971036A patent/CZ103697A3/en unknown
-
2001
- 2001-05-17 GR GR20010400129T patent/GR3035887T3/en not_active IP Right Cessation
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102528449A (en) * | 2012-01-17 | 2012-07-04 | 广州洁特生物过滤制品有限公司 | Assembly machine of breathable covers of disposable cell culture flasks |
| CN112550937A (en) * | 2020-11-27 | 2021-03-26 | 绍兴永耀电器有限公司 | Ventilative leak protection explosion-proof bottle |
Also Published As
| Publication number | Publication date |
|---|---|
| ES2156148T3 (en) | 2001-06-16 |
| CA2202635A1 (en) | 1996-04-25 |
| DE69427229D1 (en) | 2001-06-21 |
| DK0706954T3 (en) | 2001-07-30 |
| MX9702752A (en) | 1997-07-31 |
| CZ103697A3 (en) | 1998-06-17 |
| AU3832595A (en) | 1996-05-06 |
| EP0706954A1 (en) | 1996-04-17 |
| JPH10507430A (en) | 1998-07-21 |
| GR3035887T3 (en) | 2001-08-31 |
| ATE201178T1 (en) | 2001-06-15 |
| WO1996011857A1 (en) | 1996-04-25 |
| CN1064629C (en) | 2001-04-18 |
| HU220361B (en) | 2001-12-28 |
| PT706954E (en) | 2001-09-28 |
| HUT77542A (en) | 1998-05-28 |
| EP0706954B1 (en) | 2001-05-16 |
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| PB01 | Publication | ||
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |