Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
  • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
  • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
  • B05B11/02—Membranes or pistons acting on the contents inside the container, e.g. follower pistons
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
  • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
  • B05B11/0005—Components or details
  • B05B11/0062—Outlet valves actuated by the pressure of the fluid to be sprayed
  • B05B11/0072—A valve member forming part of an outlet opening
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
  • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
  • B05B11/0005—Components or details
  • B05B11/0037—Containers
  • B05B11/0039—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means
  • B05B11/0044—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means compensating underpressure by ingress of atmospheric air into the container, i.e. with venting means
  • B05B11/00442—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means compensating underpressure by ingress of atmospheric air into the container, i.e. with venting means the means being actuated by the difference between the atmospheric pressure and the pressure inside the container
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
  • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
  • B05B11/0005—Components or details
  • B05B11/0037—Containers
  • B05B11/0039—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means
  • B05B11/0044—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means compensating underpressure by ingress of atmospheric air into the container, i.e. with venting means
  • B05B11/00444—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means compensating underpressure by ingress of atmospheric air into the container, i.e. with venting means with provision for filtering or cleaning the air flow drawn into the container
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
  • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
  • B05B11/0005—Components or details
  • B05B11/0037—Containers
  • B05B11/0039—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means
  • B05B11/0044—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means compensating underpressure by ingress of atmospheric air into the container, i.e. with venting means
  • B05B11/00446—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means compensating underpressure by ingress of atmospheric air into the container, i.e. with venting means the means being located at the bottom of the container or of an enclosure surrounding the container
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
  • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
  • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
  • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
  • B05B11/1001—Piston pumps
  • B05B11/1004—Piston pumps comprising a movable cylinder and a stationary piston
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
  • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
  • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
  • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
  • B05B11/1042—Components or details
  • B05B11/1073—Springs
  • B05B11/1074—Springs located outside pump chambers
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
  • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
  • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
  • F04B9/14—Pumps characterised by muscle-power operation
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
  • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
  • B05B11/0005—Components or details
  • B05B11/0037—Containers
  • B05B11/0039—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
  • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
  • B05B11/0005—Components or details
  • B05B11/0037—Containers
  • B05B11/0039—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means
  • B05B11/0044—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means compensating underpressure by ingress of atmospheric air into the container, i.e. with venting means
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
  • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
  • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
  • B05B11/02—Membranes or pistons acting on the contents inside the container, e.g. follower pistons
  • B05B11/026—Membranes separating the content remaining in the container from the atmospheric air to compensate underpressure inside the container

Definitions

• the present invention relates to a dosing pump for the distribution of fluid, liquid or pasty products, and more particularly to a manually actuated dosing pump for rigid flask with flexible bag or with piston and dip tube, containing a fluid, liquid or pasty product intended for be delivered in constant unit doses, as well as a dispensing device equipped with such a pump.
• metering pumps for the distribution of fluid, liquid or pasty products. They are mounted on a bottle containing the product to be dispensed and they consist of a metering chamber having a determined volume, of a piston capable of moving in the chamber under the action of a pusher, and at least two valves.
• This operating mode implies that air can be introduced into the bottle to compensate for the volume released by the product expelled from the bottle and allow regular filling of the metering chamber each time the push-button is actuated.
• devices which generally include Also a rigid shell container in which a piston moves the product pushing towards the inlet orifice in the metering chamber and the air insulator which penetrates above the piston. Also known are rigid container devices in which is placed a flexible pouch which retracts as the product is extracted therefrom. The product remaining in the pocket is kept away from air, while the expulsion of the product out of the pocket can be obtained by means of a pump without air intake, or "airless", or under the pressure of a propellant acting on the wall of the pocket, in the bottle.
• a vent is provided, generally at the bottom or in the neck of the bottle, to allow outside air to enter in the space between the bottle and the bag each time the pump is actuated and thus allow the bag to retract while maintaining sufficient pressure on its walls.
• An exemplary embodiment according to this technique is described in patent FR 2,723,356 relating to a device comprising a pocket made of flexible plastic material, such as polyethylene or polypropylene, in a rigid container whose neck has an air inlet.
• Patent FR 2,669,379 describes a metering pump providing a good seal even in the event of a change of position, of the axial piston type carrying a sliding floating piston, comprising three valves.
• Patent FR 2,726,810 describes an example of a pump without air inlet in which the lower valve is flexible and frustoconical while the upper valve is carried by a disc placed at the base of the hollow rod of the pusher.
• pumps of this type have the disadvantage of include a relatively large number of components, which weakens them and increases their manufacturing cost.
• Patent EP 0.538.162 describes a closure device for a bottle, a variant of which comprises a hollow plunger forming a metering chamber, between an outlet valve and an inlet valve; when the pusher is actuated, the base of the part forming the lower valve is pushed back and deforms, thus facilitating the opening of the truncated cone surrounding the axial cylindrical part, which risks causing a return of fluid in the bottle.
• Patent application WO 95.25945 relates to a pump comprising a deformable lower valve and an expulsion valve whose orifice is similar, but the dimensions and functions are different.
• Other examples of dispenser bottles with a hollow pusher are described in patents EP 888,823 and EP 733,559. In all of these dispenser bottles, the valves have different shapes, sizes and functions.
• the present invention relates to a metering pump without air intake, for the distribution of fluid, liquid or pasty products, comprising a reduced number of components.
• the present invention also relates to a metering pump without air intake, ensuring a regular distribution of constant unit doses of fluid, liquid or pasty products.
• the invention also relates to a device for packaging and dispensing fluid, liquid or pasty products, of the rigid vial type with flexible bag, comprising a metering pump as described above, ensuring satisfactory operation whatever the position. of the rigid bottle.
• the invention also relates to a device for packaging and distributing. fluid or liquid products, of the rigid vented bottle type, comprising a metering pump as described above, mounted in leaktight manner on a bottle provided with a vent.
• the manually actuated metering pump, for rigid vial is of the double valve type, comprising a lower intake valve and an upper expulsion valve at the inlet and at the outlet, respectively, d 'a metering chamber slidingly mounted on the lower valve, and it is distinguished in that the lower valve and the upper valve are identical.
• the lower valve is fixed to a hollow tube communicating with the pocket, while the upper valve is mounted at the end of the outlet nozzle of the pump.
• This embodiment has the advantage of constituting an extreme closure which reduces to zero the dead volume of product at the outlet of the pusher, which facilitates the preservation of the latter and avoids an unsightly accumulation of product at the outlet of the pusher which could, when drying out, close the outlet nozzle.
• the two valves, lower and upper are identical and interchangeable with the mounting of the device, which considerably simplifies its manufacture and greatly reduces the cost thereof.
• the valves consist of a cylindrical cap of elastic material pierced in its center, fixed on a cylindrical piece forming a support and comprising an annular orifice surrounding in its center an element coming opposite the hole of the hood and hiding the latter.
• the front wall of the cap covers the annular orifice and bears on the central element.
• An external overpressure presses the wall of the cap against its support and then keeps the valve closed.
• an overpressure internal causes the elastic blade to rise from the front wall of the cap, exposing the annular orifice and causing the valve to open.
• the valves have a cylindrical-conical shape comprising a dome pierced in its center, the wall of which, in the closed position, covers the outlet nozzle with an annular orifice in a plane substantially perpendicular to the outgoing flow of the fluid. More particularly, the wall of the valve, in its dome-shaped part, covers the annular orifice, substantially perpendicular to its axis, and bears on the central cylindrical element located in the axis of the orifice.
• This arrangement makes it possible to combine the valve with an orifice of relatively large cross section, both for the lower intake valve and for the upper expulsion valve.
• valves can be made of any material having the desired characteristics of flexibility and elasticity, and compatible with the products contained in the bottle.
• the valves are made of a material whose Shore A hardness is between 40 and 80, and preferably between 50 and 60.
• the pump may be advantageous, in accordance with the invention, to mount the pump in a sealed manner on the rigid bottle by means of a ring or a cover.
• the pump is mounted directly on the bottle, for example by interlocking.
• the pusher comprises means for limiting its travel and adapting the dose to a determined volume.
• These means can be achieved by providing for example one or more stops placed on the movable part of the pusher and cooperating with complementary means on the fixed part, or by playing along the length of the cylindrical part of the pusher, or by inserting a sleeve limiting the travel of the pusher on the support. It is thus possible to have devices for dispensing fluid products designed to provide different doses of product, by modifying only one constituent element, or by inserting a simple complementary element. Such a system is particularly economical.
• An air inlet circuit is provided so that the outside air can enter the bottle and compensate for the volume of product expelled by the pump.
• This air circuit is preferably located at the level of the pusher of the pump, and comprises means for ensuring its closure when the pusher is raised, in the rest position.
• the air circuit can be constituted by a vent, preferably in the bottom of the bottle.
• a vent provided with a valve, to prevent any leakage of the product contained in the bottle, and with a filter to prevent the introduction of pollutants , such as bacteria, which could degrade the product to be dispensed.
• a dip tube extending the pump into the bottle, the end of the dip tube being able to be located near the bottom of the bottle.
• a cover or cap can be provided removably mounted on the dispensing head.
• Means can be provided for sealing the mounting of the cap on the head, and for example the cap can be fitted by interlocking thanks to a shape complementary to the internal edge of the cap and the base of the nose of the pusher receiving it. , this assembly being completed by an O-ring or sealing studs.
• the pump according to the present invention has the advantage of comprising only a limited number of components, which reduces manufacturing costs.
• the pump of the invention has only 5 or 6 components, depending on the configuration adopted; in addition, the lower (inlet) and upper (expulsion) valves can be identical, which further reduces the tools required for manufacturing.
• the pumps commonly used in the technique of flexible bag bottles for cosmetic or pharmaceutical products generally contain between 15 and 20 components.
• the pump is generally made of plastic material such as polyethylene or polypropylene of appropriate density to give it the desired mechanical properties.
• the bag can be made of a plastic material chosen for example from polyethylene, polypropylene, polyamide, a copolymer of ethylene and vinyl alcohol (EVOH), a low density polyethylene, etc. They may be monolayers or multilayer complexes including a metal layer, for example an aluminum layer forming a barrier reinforcing the seal, combined with one or more layers of plastic.
• the bag can be made from these materials by techniques such as blowing in one piece, which has the advantage of reducing the investment required for manufacturing. One can also proceed by injection blowing or extrusion blowing of a parison in a suitable mold.
• the bag can also be manufactured by welding a plastic or metallic film, or a metal / plastic multilayer complex on a support forming the neck of the bag.
• the bag can be made of low density polyethylene when it has to contain a cream which is not very sensitive to the effects of the external environment, while it can be made of a polyamide providing better protection against the effects of oxygen and against loss by evaporation of water vapor, when it must contain a more fragile product.
• Figure 1 a schematic sectional view of a pump mounted on the neck of a rigid container, presented in the rest position, push button raised.
• Figures 2a and 2b a partial sectional view of a device for dispensing fluid, liquid or pasty products, comprising a pump according to Figure 1 mounted on a single bottle, the pusher being in the high (Fig. 2a) or low (Fig. 2b) position.
• Figures 3a and 3b a partial sectional view of a variant of the device of Figure 2 where the pusher, in the high position in FIG. 3a and in the low position in FIG. 3b, is suitable for expelling a small dose of product.
• Figures 4a and 4b a partial sectional view of another variant of the device of Figure 2 where the stroke of the pusher, in the high position in FIG. 4a and in the low position in FIG. 4b, is limited by a sleeve.
• Figure 5 a sectional view of a variant of the device of Figure 1, comprising a dip tube and a vent at the bottom of the bottle.
• Figure 6 an enlarged sectional view of the dispensing nose of the pusher carrying a sealed closure cap.
• Figure 7 an enlarged sectional view of an alternative embodiment of the pusher of Figure 6.
• the pump (1) shown in Figure 1 is mounted on the body (2) of a rigid bottle via a cover (3).
• the cover (3) has a cylindrical hole
• the pump chamber (6) (1) is delimited by the lower valve (7), or intake valve, and the upper valve (8), or expulsion valve.
• the two valves (7) and (8) are identical but mounted in opposition, as indicated below, that is to say that the intake valve closes when the expulsion valve opens, and vice versa. , depending on the movements of the pump.
• the upper valve (8) is mounted at the end of the pump outlet nozzle.
• the upper part of the pump body has the shape of a pusher (9) allowing the user to actuate the pump from the position shown in Figure 1, by pushing the pusher (9) against the coil spring metal (10) placed outside the chamber, so that it does not come into contact with the product leaving the bag.
• the pump body slides in the cylindrical hole (4) of the cover (3), until the lower end (11) of the pump body (5) comes to bear against the flange ( 12) integral with the tube (13) carrying the lower valve (7).
• the pocket (16) is fixed by its neck (17) to the base of the tube (13), and rests on the shoulder (18) formed on the body (2) of the bottle.
• the attachment of the neck (17) to the tube (13) can be done by ultrasonic welding.
• the small dimension of the neck (17) of the pocket ie less than a third of the section of the bottle, facilitates its manufacture by simple blowing technique.
• an air intake circuit is provided so that the outside air can penetrate into the space separating the pocket from the wall. inside the bottle in order to maintain sufficient pressure so that the bag can retract each time the product is expelled.
• This air circuit is materialized by the space between the external part of the body (5) and the internal wall of the cylindrical hole (4), forming a channel allowing air to pass between the walls of the pump and the cylindrical hole. This channel is open when the pusher is actuated, and it is closed when the pusher is raised because in this position, the annular rib (19) bears against the edge of the cylindrical hole (4) and closes the channel.
• the tests carried out with a device as shown in FIG. 1, comprising a pump according to the invention, have shown excellent dosing regularity, and restitution rates of the order of 90 to 95% in the case of creams, according to their viscosity, and higher than 95% in the case of liquids.
• priming the pump during the first use can be obtained by only 3 or 4 presses on the pusher.
• Figure 2 shows the pump of Figure 1 mounted sealingly on a simple rigid bottle for fluid products, preferably for liquids, where the pump is extended in the bottle by a dip tube.
• the pusher of the pump of Figure 2a is in the high position, and the circular retainer (14) located at the base of the pusher is then in contact with the shoulder forming a stop (15) on the internal face of the cylindrical hole receiving the pusher .
• the base (11) of the pusher comes against the flange (12) forming the bottom of the cylindrical hole (4) as shown in Figure 2b.
• the stroke Hl of the pusher is indicated in Figure 2a and is equal to the distance separating the flange (12) from the base (11) of the pusher in the raised position.
• the downward movement of the pusher causes the valve (8) to open and the product located in the metering chamber (6) to be expelled, while the inlet valve (7) remains closed under the action of the overpressure in the room.
• the user then releases the plunger, it rises under the action of the spring (10) and the vacuum thus created in the chamber (6) causes the opening of the intake valve (7) and the entry of product coming from the bottle through the dip tube (20), while the upper valve (8) remains closed.
• the metering chamber (6) is thus filled with a dose of product which is ready to be expelled when the user actuates the pusher again. This dose of product remains sheltered from outside air thanks to the tightness of the upper valve (8).
• FIG. 4a An equivalent embodiment is shown in Figure 4a, where the pusher (9) is identical to that of Figure 2a, but its stroke is limited by a cylindrical ring (21) placed in the bottom of the cylindrical hole, on the base of the collar (12). The stroke H3 of the pusher is then equal to the stroke Hl of the device of Figure 2a, reduced by the height of the cylindrical ring (21).
• Figure 5 shows a rigid bottle (2) carrying the pump (1) of the invention comprising the two valves (7) and (8) and the pusher (9).
• the bottle (2) is completed by a venting system (22).
• the venting system comprises a plug (23) inserted in a hole provided in the bottom of the bottle (2), and carrying a filter (24) and a valve (25) of the usual type.
• the valve is designed so as to allow outside air to enter the bottle only when a vacuum is formed in the latter, that is to say when a dose of product is sucked through the dip tube (20) from the bottle to the metering chamber (6).
• air is introduced into the bottle (2) each time the pusher (9) of the pump (1) is actuated to compensate for the volume of the dose expelled, without contaminating the product contained in the bottle, thanks to the filter (24 ).
• FIG. 6 shows the detail of the upper valve (8) carrying a cap (26) sealingly mounted on the nose of the pusher (9).
• the seal is obtained by means of a rib (27) cooperating with the base of the cylindrical cap.
• the product outlet nozzle comprises an annular orifice (29) surrounding a cylindrical element (30) which is located opposite the hole (31) formed in the front face of the valve (8). In the closed position, the front face of the valve (8) is applied to the cylindrical element
• This protuberance forms with the front face of the element cylindrical, a shoulder cooperating with the edge of the central orifice of the valve (8), so that the front surface of the cylindrical protuberance (32) is in line with the surface of the valve (8).
• This embodiment makes it possible to guide the flow of fluid leaving the orifice (29), even if the edges of the valve do not rise in a perfectly symmetrical manner relative to the axis of the annular orifice (29).

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
• Closures For Containers (AREA)
• Reciprocating Pumps (AREA)
• Jet Pumps And Other Pumps (AREA)

Applications Claiming Priority (3)

Publications (2)

Family

ID=32338789

Family Applications (1)

Country Status (12)

Cited By (3)

Families Citing this family (20)

Family Cites Families (17)

• 2002
  • 2002-12-13 FR FR0215854A patent/FR2848618B1/fr not_active Expired - Fee Related
• 2003
  • 2003-11-15 AU AU2003300614A patent/AU2003300614A1/en not_active Abandoned
  • 2003-11-15 ES ES03813191T patent/ES2265608T3/es not_active Expired - Lifetime
  • 2003-11-15 DE DE60306421T patent/DE60306421T2/de not_active Expired - Lifetime
  • 2003-11-15 US US10/538,362 patent/US7481336B2/en not_active Expired - Lifetime
  • 2003-11-15 EP EP03813191A patent/EP1572375B1/de not_active Expired - Lifetime
  • 2003-11-15 CN CNB2003801059534A patent/CN100464871C/zh not_active Expired - Fee Related
  • 2003-11-15 KR KR1020057010847A patent/KR101024348B1/ko active IP Right Grant
  • 2003-11-15 WO PCT/FR2003/003725 patent/WO2004054721A1/fr active IP Right Grant
  • 2003-11-15 CA CA2507610A patent/CA2507610C/fr not_active Expired - Lifetime
  • 2003-11-15 JP JP2004559838A patent/JP4358114B2/ja not_active Expired - Fee Related
  • 2003-11-15 AT AT03813191T patent/ATE330710T1/de not_active IP Right Cessation

Non-Patent Citations (1)

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