WO2008104030A1 - Separating solid or particulate matter from a fluid flow, in particular, a stormwater flow, and further with an overflow bypass - Google Patents
Separating solid or particulate matter from a fluid flow, in particular, a stormwater flow, and further with an overflow bypass Download PDFInfo
- Publication number
- WO2008104030A1 WO2008104030A1 PCT/AU2008/000262 AU2008000262W WO2008104030A1 WO 2008104030 A1 WO2008104030 A1 WO 2008104030A1 AU 2008000262 W AU2008000262 W AU 2008000262W WO 2008104030 A1 WO2008104030 A1 WO 2008104030A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- diverter
- stormwater
- fluid
- outlet
- separation chamber
- Prior art date
Links
- 239000012530 fluid Substances 0.000 title claims abstract description 72
- 239000007787 solid Substances 0.000 title claims abstract description 27
- 239000013618 particulate matter Substances 0.000 title claims abstract description 25
- 239000000463 material Substances 0.000 claims abstract description 4
- 238000000926 separation method Methods 0.000 claims description 88
- 238000001914 filtration Methods 0.000 claims description 39
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 18
- 238000012423 maintenance Methods 0.000 claims description 5
- 230000001419 dependent effect Effects 0.000 claims 2
- 239000003921 oil Substances 0.000 description 5
- 239000013049 sediment Substances 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 238000011418 maintenance treatment Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010813 municipal solid waste Substances 0.000 description 1
- -1 organics Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/14—Devices for separating liquid or solid substances from sewage, e.g. sand or sludge traps, rakes or grates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/0012—Settling tanks making use of filters, e.g. by floating layers of particulate material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/26—Separation of sediment aided by centrifugal force or centripetal force
- B01D21/267—Separation of sediment aided by centrifugal force or centripetal force by using a cyclone
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/30—Control equipment
- B01D21/34—Controlling the feed distribution; Controlling the liquid level ; Control of process parameters
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/04—Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
- E03F5/0401—Gullies for use in roads or pavements
- E03F5/0404—Gullies for use in roads or pavements with a permanent or temporary filtering device; Filtering devices specially adapted therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2221/00—Applications of separation devices
- B01D2221/12—Separation devices for treating rain or storm water
Definitions
- This invention relates to a separator with an overflow bypass, and more particularly, but not exclusively, to a separator for stormwater with an overflow bypass.
- Underground water storage tank structures are typically not able to be readily cleaned of pollutants which may be contained in unf ⁇ ltered stormwater.
- Examples of the present invention seek to provide an improved separator for filtering water passing into a storage container.
- an apparatus for separating solid or particulate matter from a flowing fluid including: an inlet for allowing unfiltered fluid to enter the apparatus; filter means for separating material from the unfiltered fluid; a first outlet for delivering filtered fluid from the apparatus; and a second outlet for delivering unfiltered fluid from the apparatus when the level of fluid in the apparatus exceeds a predetermined level.
- the apparatus further includes a diverter, wherein an upper level of the diverter defines the predetermined level.
- the diverter is arranged such that unfiltered fluid is diverted by the diverter to the filter means to exit the first outlet when the level of unfiltered fluid at the diverter is below the upper level, and wherein unfiltered fluid is allowed to flow over the diverter to bypass the filter means and to exit the second outlet when the level of the unfiltered fluid at the diverter is above the upper level.
- the filter means includes a separation chamber into which, in use of the apparatus, the unfiltered fluid is introduced by the diverter to establish a circular flow of fluid within the separation chamber such that solids or particulate matter of a predetermined size drop into a sump below the separation chamber.
- a wall of the separation chamber includes a separation screen having a plurality of openings of a predetermined size for preventing solid or particulate matter larger than that size from passing outwardly through the separation screen so as to filter the fluid.
- the apparatus is provided with a first flow sensor for sensing flow through the first outlet. More preferably, the apparatus is provided with a second flow sensor for sensing flow through the second outlet. In one example, the apparatus activates an indicator in response to the second flow sensor sensing flow through the second outlet so as to alert an operator that the apparatus may require maintenance. An output of the first flow sensor may be used to determine cause of flow through the second outlet.
- an apparatus for separating solid or particulate matter from a flowing fluid including: an inlet for allowing unfiltered fluid to enter the apparatus; a separation chamber into which, in use of the apparatus, the unfiltered fluid is introduced by a diverter to establish a circular flow of fluid within the separation chamber such that solids or particulate matter of a predetermined size drop into a sump below the separation chamber, a wall of the separation chamber including a separation screen having a plurality of openings of a predetermined size for preventing solid or particulate matter larger than that size from passing outwardly through the separation screen so as to filter the fluid; an outer chamber arranged about the separation chamber and being accessible to fluid in the separation chamber only via the openings in the separation screen; a first outlet for allowing flow of fluid from the outer chamber to exit the apparatus; and a second outlet, separate from the first outlet, for allowing unfiltered fluid to flow directly from the inlet to bypass the separation chamber and to exit the apparatus, wherein the diverter diver
- an apparatus for separating solid or particulate matter from stormwater flowing to a water storage container including: an inlet adapted for fluid communication with a stormwater drainage conduit so as to, in use, allow unfiltered stormwater to enter the apparatus from the stormwater drainage conduit; a separation chamber into which, in use of the apparatus, the unfiltered stormwater is introduced by a diverter to the separation chamber, a wall of the separation chamber including a screen having a plurality of openings of a predetermined size for preventing solid or particulate matter larger than that size from passing through the screen so as to filter the stormwater; a receiving chamber arranged on an opposite side of the screen relative to the separation chamber and being accessible to stormwater in the separation chamber only via the openings in the screen; a first outlet adapted for fluid communication with the water storage container so as to, in use, allow flow of stormwater from the receiving chamber to exit the apparatus to the water storage container; and a second outlet, separate from the first outlet, for allowing unfiltered stormwater
- the second outlet is in fluid communication with the stormwater drainage conduit, at a location downstream of the inlet, for allowing unfiltered stormwater to exit the apparatus to the stormwater drainage conduit.
- the apparatus is provided with a first flow sensor for sensing flow along the filtering path. More preferably, the apparatus is provided with a second flow sensor for sensing flow along the non-filtering path. In one example, the apparatus activates an indicator in response to the second flow sensor sensing flow along the non-filtering path so as to alert an operator that the apparatus may require maintenance. An output of the first flow sensor may be used to determine cause of flow through along the non-filtering path.
- an apparatus for separating solid or particulate matter from stormwater supplied by a stormwater drainage conduit including a diverter which diverts unfiltered stormwater from the conduit into a separation chamber when a level of the stormwater at the diverter is at or below a top level of the diverter so as to follow a filtering path via openings in a separation screen to a storage container via a first outlet, and which diverter allows unfiltered stormwater to flow over the diverter when the level of the stormwater at the diverter is above the top level so as to follow a non-filtering path, separate to the filtering path, in which the unfiltered stormwater bypasses the separation chamber and is returned to the stormwater drainage conduit via a second outlet.
- Figure 1 is a cut-away view of a prior inline separator unit
- Figure 2 is a cut-away view of another prior inline separator unit
- Figure 3 is a top perspective cut-away view of the inline separator of Figure 2, sectioned in a plane transverse to the direction of stormwater flow;
- Figure 4 is a top cross-sectional view of the separator shown in Figures 2 and 3;
- Figure 5 is a side cross-sectional view of the separator shown in Figures 2 to 4;
- Figure 6 is a top cross-sectional view of a separator in accordance with an example of the present invention.
- Figure 7 is a side cross-sectional view of the separator of Figure 6, the section being taken along the line "A" shown in Figure 6;
- Figure 8 is a top cross-sectional view of the separator shown in Figures 6 and 7;
- Figure 9 is a side view of a removable screen of the separator shown in Figures 6 to
- Figure 10 is side cross-sectional view of the separator shown in Figures 6 to 9, the section being taken along line "B" shown in Figure 8. Detailed Description
- FIG. 1 With reference to Figure 1 there is shown a previous inline separator unit 10 which is adapted for placement in a storm drain within a single manhole.
- the unit combines treatment and bypass capabilities to remove both fine and suspended solids along with oil, grease, rubbish and debris.
- the unit 10 includes a channelling weir 12 which collects flow for entrance into a separation chamber 14.
- a natural vortex in the separation chamber 14 separates suspended and fine sediments to the centre of the chamber 14 for eventual settling in a sump 16 located below the diversion chamber 14.
- a separation screen 18 which forms a wall of the separation chamber 14 is designed so as to avoid blockage. Flow of stormwater through the separation screen 18 is discharged from the separator 10 via an outlet 20, after flowing beneath an oil baffle 22 which retains oil within the unit 10. In the event of flows in excess of 50 cubic feet per second, flow is able to bypass the separation chamber so as to flow directly to the outlet 20.
- the unit 10 reportedly removes 80 percent of total suspending solids as well as 100 percent of floatables and neutrally buoyant material, plus oil and grease. Due to the non- blocking design of the screen 18 and the generally non-mechanical operation of the unit 10, it is a low maintenance treatment option requiring cleaning once annually to maintain its successful and efficient operation.
- Figures 2 to 5 show another form of previous inline separator unit 24 which uses a similar induced vortex flow to separate gross pollutants, organics, soot/sediment and oils from stormwater.
- the unit 24 is formed of a polymer which makes it light and easy to use in source control applications and small catchments.
- the unit has an inlet 26, a diverter 28, a separation chamber 30, an outer chamber 32 which surrounds the separation chamber 30, a sump 34, and a single outlet 36. Operation of the separator unit 24 is shown diagrammatical Iy in Figure 2 in which arrows are used to indicate flow of fluid through the unit 24.
- flow of unfiltered stormwater through the inlet 26 is diverted by the diverter 28 into the separation chamber 30.
- the diverter 28 is curved so as to induce a clockwise vortex flow within the separation chamber 30, which causes separation of suspended and fine sediments to the centre of the chamber 30 for eventual settling in the sump 34.
- Stormwater filtered through the screen 38 of the separation chamber 30 flows into the outer chamber 32 to form an anticlockwise flow about the separation chamber 30 and upwardly to exit the unit 24 through the single outlet 36.
- the separator apparatus 40 shown in Figures 6 to 10 is adapted to enable bypass of a filter element of the separator in the event of overflow while ensuring that only filtered stormwater is outlet into the water storage container.
- the apparatus 40 includes an inlet 42, a diverter 44, a separation chamber 46 having a screen 48, a receiving chamber 50, a first outlet 52, and a second outlet 54.
- the inlet 42 is adapted for fluid communication with a stormwater drainage conduit so as to, in use, allow unfiltered stormwater to enter the apparatus 40 from the stormwater drainage conduit.
- the unfiltered stormwater is introduced by the diverter 44 to the separation chamber 46.
- the diverter 44 leading tangentially into a wall 56 of the separation chamber 46, the unfiltered fluid introduced by the diverter 44 is established in a circular flow within the separation chamber 46.
- solids or particulate matter of a predetermined size drop into a sump 58 below the separation chamber 46, as shown in Figure 7 by arrow 60, in a manner similar to that show in Figure 2.
- the screen 48 forms at least part of the wall 56 of the separation chamber 46 and has a plurality of openings 62 of a predetermined size for preventing solid or particulate matter larger than that size from passing outwardly through the separation screen 48 to the outer receiving chamber 50. Owing to geometry of the openings 62 and/or the circular flow of the stormwater, solid or particulate matter smaller than the size of the openings 62 may also be prevented from passing outwardly through the separation screen 48 to the outer receiving chamber 50. In this way, the stormwater which reaches the outer receiving chamber 50 is filtered, as the receiving chamber 50 is accessible to the stormwater in the separation chamber 46 only via the apertures 62 in the separation screen 48.
- the first outlet 52 is adapted for fluid communication with the water storage container so as to, in use, allow flow of stormwater from the receiving chamber 50 to exit the apparatus 40 to the water storage container.
- the first outlet 52 is accessible to stormwater at the inlet 42 via only the apertures 62 in the screen 48, thus ensuring that all stormwater exiting to the water storage container has been filtered. More particularly, this may be ensured by providing a full height wall 68 around an aperture 70 formed in a floor surface 72 around the top of the separation screen 48, through which aperture 70 filtered water is able to flow from the receiving chamber 50 to the first outlet 52.
- the full height wall 68 extends between the floor surface 72 and a ceiling 74 of the apparatus 40.
- the full height wall 68 encloses the aperture 70 and the first outlet 52 by extending in a first portion 75 which runs from one edge adjoining a separating wall 76 between the first outlet 52 and the second outlet 54, to an opposite edge which adjoins an arcuate second portion 78 running above and in line with a section of the separation screen 48.
- the second portion 78 adjoins a third portion 80 which extends adjacent one edge of the aperture 70 to one side of the first outlet 52. Accordingly, the aperture 70 and the first outlet 52 are enclosed to prevent them from receiving unfiltered water.
- the second portion 78 may extend in a clockwise direction (as seen in Figure 6) to a frontward full height wall 82, which configuration may be relied upon to enclose the aperture 70 and the first outlet 52 from unfiltered water.
- the second outlet 54 is separate to the first outlet 52, and is arranged to allow unfiltered stormwater to flow directly from the inlet 42 to bypass the separation chamber 46 and to exit the apparatus 40, so as to be returned to the stormwater drainage conduit at a location downstream of the inlet 42.
- the diverter 44 is arranged in a weir-like configuration to divert unfiltered stormwater from the inlet 42 into the separation chamber 46 when a level of the stormwater at the diverter 44 is at or below a top level of the diverter 44, so as to follow a filtering path 64 via the openings 62 in the screen 48 and through the receiving chamber 50 to the first outlet 52 via aperture 70.
- the diverter 44 In the event of overflow, which may be caused by either excessive flow of stormwater at the inlet 42 and/or by blockage of the screen 48, the diverter 44 allows unfiltered stormwater to flow over the diverter 44 when the level of the stormwater at the diverter 44 is above the top level so as to follow a non-filtering path 66, which is separate to the filtering path 64, and in which the unfiltered stormwater bypasses the separation chamber 46 and exits the apparatus 40 through the second outlet 54.
- the apparatus 40 may also be provided with a flow sensor for sensing flow along the non-filtering path 66 and/or a flow sensor for sensing flow along the filtering path 64.
- the flow sensor(s) may be in the form of a previously known type of sensor for sensing fluid flow such as, for example, a spindle which is rotated in response to flow exerting force on fins (or the like) attached to the spindle.
- An indicator which may be in the form of an audible or visual alarm is activated in response to flow along the non-filtering path 66 being sensed so as to alert an operator that the apparatus 40 may require maintenance. In this way, the operator is able to inspect the apparatus 40, and to clean the screen 48 and/or the sump 58, to restore effective operation of the apparatus 40.
- An output of the flow sensor for sensing flow along the filtering path 64 may be used to determine cause of flow along the non-filtering path 66.
- flow along both the filtering path 64 and the non-filtering path 66 may indicate the cause of flow along the non-filtering path as being excessive flow at the inlet 26, whereas flow along only the non-filtering path may indicate blockage of the screen 38.
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2008221239A AU2008221239B2 (en) | 2008-02-29 | 2008-02-29 | Separating solid or particulate matter from a fluid flow, in particular, a stormwater flow, and further with an overflow bypass |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2007901060 | 2007-03-01 | ||
AU2007901060A AU2007901060A0 (en) | 2007-03-01 | Separator |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2008104030A1 true WO2008104030A1 (en) | 2008-09-04 |
Family
ID=39720794
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/AU2008/000262 WO2008104030A1 (en) | 2007-03-01 | 2008-02-29 | Separating solid or particulate matter from a fluid flow, in particular, a stormwater flow, and further with an overflow bypass |
Country Status (1)
Country | Link |
---|---|
WO (1) | WO2008104030A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2492045A (en) * | 2011-06-07 | 2012-12-26 | Polypipe Ltd | Water harvesting system |
WO2016004456A1 (en) * | 2014-07-11 | 2016-01-14 | Aquavest Pty Limited | An apparatus for filtering polluted water |
US11235984B2 (en) * | 2018-07-04 | 2022-02-01 | Holcim (Australia) Pty Ltd. | Water treatment device |
WO2023232701A1 (en) * | 2022-05-30 | 2023-12-07 | 3P Technik Filtersysteme Gmbh | Sedimentation device |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4125419A1 (en) * | 1991-01-18 | 1992-08-20 | Vogelsberger Silo Und Behaelte | Rain overflow and associated basin - is for rainwater treatment and discharge plant and incorporates sieve devices and has input from canalisation |
WO1994016159A1 (en) * | 1993-01-11 | 1994-07-21 | Johannessen Joergen Mosbaek | A distributing and regulating unit |
JP2002166105A (en) * | 2000-11-29 | 2002-06-11 | Nkk Corp | Water treatment apparatus |
US20020117435A1 (en) * | 2001-02-26 | 2002-08-29 | Pank Thomas E. | Filtering system for runoff water |
EP1514972A2 (en) * | 2003-09-10 | 2005-03-16 | Vexamus Ltd. | Sewage device for filtering excess fluid flows |
JP2006028842A (en) * | 2004-07-14 | 2006-02-02 | Kcon Kk | Road-surface wastewater treatment tank |
US20060207922A1 (en) * | 2005-03-21 | 2006-09-21 | Dussich George V A I | Storm water filtration system |
-
2008
- 2008-02-29 WO PCT/AU2008/000262 patent/WO2008104030A1/en active Application Filing
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4125419A1 (en) * | 1991-01-18 | 1992-08-20 | Vogelsberger Silo Und Behaelte | Rain overflow and associated basin - is for rainwater treatment and discharge plant and incorporates sieve devices and has input from canalisation |
WO1994016159A1 (en) * | 1993-01-11 | 1994-07-21 | Johannessen Joergen Mosbaek | A distributing and regulating unit |
JP2002166105A (en) * | 2000-11-29 | 2002-06-11 | Nkk Corp | Water treatment apparatus |
US20020117435A1 (en) * | 2001-02-26 | 2002-08-29 | Pank Thomas E. | Filtering system for runoff water |
EP1514972A2 (en) * | 2003-09-10 | 2005-03-16 | Vexamus Ltd. | Sewage device for filtering excess fluid flows |
JP2006028842A (en) * | 2004-07-14 | 2006-02-02 | Kcon Kk | Road-surface wastewater treatment tank |
US20060207922A1 (en) * | 2005-03-21 | 2006-09-21 | Dussich George V A I | Storm water filtration system |
Non-Patent Citations (1)
Title |
---|
DATABASE WPI Derwent World Patents Index; Class D16, AN 2002-725865 * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2492045A (en) * | 2011-06-07 | 2012-12-26 | Polypipe Ltd | Water harvesting system |
WO2016004456A1 (en) * | 2014-07-11 | 2016-01-14 | Aquavest Pty Limited | An apparatus for filtering polluted water |
US11235984B2 (en) * | 2018-07-04 | 2022-02-01 | Holcim (Australia) Pty Ltd. | Water treatment device |
WO2023232701A1 (en) * | 2022-05-30 | 2023-12-07 | 3P Technik Filtersysteme Gmbh | Sedimentation device |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US7022243B2 (en) | Apparatus for treating storm water | |
US7182874B2 (en) | Storm water treatment apparatus employing dual vortex separators | |
EP0935699B1 (en) | Gross pollution filter | |
EP0825304B1 (en) | Apparatus for separating floating and non-floating particulate from rainwater drainage | |
US7582216B2 (en) | Water treatment and bypass system | |
US6524473B2 (en) | Gravitational separator and drainwater treatment system for use in a horizontal passageway | |
US6951619B2 (en) | Apparatus for trapping floating and non-floating particulate matter | |
US7892425B2 (en) | Stormwater plug flow separation system | |
US7021471B2 (en) | Diffuser for an oil water separator system | |
US20050109693A1 (en) | Downspout filter | |
KR101721439B1 (en) | Sewage filter screen | |
CA3085711C (en) | Hydrodynamic separators, assemblies, and methods for storm water treatment | |
US20150176265A1 (en) | Filter for polluted water | |
KR100742388B1 (en) | centrifugation typed waste water dealing device | |
WO2008104030A1 (en) | Separating solid or particulate matter from a fluid flow, in particular, a stormwater flow, and further with an overflow bypass | |
US8591732B2 (en) | Apparatus to separate light fluids, heavy fluids, and/or sediment from a fluid stream | |
KR20190092108A (en) | A sanitation facility of first rainwater-spilled water for bridge | |
AU2008221239A1 (en) | Separating solid or particulate matter from a fluid flow, in particular, a stormwater flow, and further with an overflow bypass | |
WO1999054564A1 (en) | Rapid storm water filtration | |
AU2006220392B2 (en) | System for feeding a liquid fluid through a filter | |
WO2014146178A1 (en) | Solids separator | |
AU785447B2 (en) | Gross pollutant trap | |
KR100519212B1 (en) | Improved separator tank | |
PL202319B1 (en) | Coalescence separator |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 08706144 Country of ref document: EP Kind code of ref document: A1 |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2008221239 Country of ref document: AU |
|
ENP | Entry into the national phase |
Ref document number: 2008221239 Country of ref document: AU Date of ref document: 20080229 Kind code of ref document: A |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 08706144 Country of ref document: EP Kind code of ref document: A1 |