EP1692049A1 - Child-resistant, molded plastc closure, package incorporating same and container therefor - Google Patents
Child-resistant, molded plastc closure, package incorporating same and container thereforInfo
- Publication number
- EP1692049A1 EP1692049A1 EP04813831A EP04813831A EP1692049A1 EP 1692049 A1 EP1692049 A1 EP 1692049A1 EP 04813831 A EP04813831 A EP 04813831A EP 04813831 A EP04813831 A EP 04813831A EP 1692049 A1 EP1692049 A1 EP 1692049A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- closure
- container
- neck
- locking lugs
- outer sidewall
- 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.)
- Withdrawn
Links
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
- B65D50/00—Closures with means for discouraging unauthorised opening or removal thereof, with or without indicating means, e.g. child-proof closures
- B65D50/02—Closures with means for discouraging unauthorised opening or removal thereof, with or without indicating means, e.g. child-proof closures openable or removable by the combination of plural actions
- B65D50/04—Closures with means for discouraging unauthorised opening or removal thereof, with or without indicating means, e.g. child-proof closures openable or removable by the combination of plural actions requiring the combination of simultaneous actions, e.g. depressing and turning, lifting and turning, maintaining a part and turning another one
- B65D50/045—Closures with means for discouraging unauthorised opening or removal thereof, with or without indicating means, e.g. child-proof closures openable or removable by the combination of plural actions requiring the combination of simultaneous actions, e.g. depressing and turning, lifting and turning, maintaining a part and turning another one where one action elastically deforms or deflects at least part of the closure, the container or an intermediate element, e.g. a ring
- B65D50/046—Closures with means for discouraging unauthorised opening or removal thereof, with or without indicating means, e.g. child-proof closures openable or removable by the combination of plural actions requiring the combination of simultaneous actions, e.g. depressing and turning, lifting and turning, maintaining a part and turning another one where one action elastically deforms or deflects at least part of the closure, the container or an intermediate element, e.g. a ring and such deformation causes the disengagement of locking means, e.g. the release of a pawl-like element from a tooth or abutment, to allow removal of the closure by simultaneous rotation
-
- 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
- B65D2501/00—Containers having bodies formed in one piece
- B65D2501/0009—Bottles or similar containers with necks or like restricted apertures designed for pouring contents
- B65D2501/0081—Bottles of non-circular cross-section
Definitions
- This invention relates to a child-resistant, molded plastic closure of the squeeze and turn type, to a package incorporating a closure of such character removably applied to a suitably configured finish of a container, and to a container that is adapted for use in such a package.
- the ramp-shaped locking lugs 46, 48 of the closure of the aforesaid '576 patent which have a straight locking ledge abutment surface (element 54 of the aforesaid '576 patent), have structural rigidity such that when the closure is applied to a container finish as the closure locking lugs pass over container finish locking lugs (70, 72 of the aforesaid '576 patent), an application torque will be required that is somewhat higher than desired for some applications, although still within applicable industry standards.
- the ramp-shaped locking lugs 46, 48 of the closure of the '576 patent although in compliance with applicable industry standards, can occasionally be overcome by a brute force unlocking torque without deflecting the squeeze pads 90, 92 to remove a closure in a proper, child- resistant fashion. Improvement in the resistance of the closure of the '576 patent to improper brute force removal is also, therefore, a desirable goal of any attempt to improve the closure of the '576 patent.
- an improved, single piece, dual wail, molded plastic, squeeze and turn child-resistant closure a package that is made up of a container with such a closure removably fixed to a suitably-configured finish on a neck on such a container, and a container that is adapted for use in such a package.
- the closure of the present invention is an improved version of the closure that is described in the aforesaid '576 patent, and the improvement resides in providing a generally U- shaped recess or indentation in the locking ledge abutment surface (element 54) of the ramp-shaped locking lugs (elements 46, 48) thereof.
- each closure locking lug ledge abutment surface also has the effect of converting a radially innermost portion of the locking lug to a finger that is flexible with respect to other structure of the locking lug.
- Such a flexible finger is capable of resiliently yielding in a radially outward direction when the closure locking lug engages a container finish locking lug, during application of the closure to the container, to desirably reduce the torque needed to properly apply a closure to a container.
- the flexibility of the flexible finger also also improves the resistance of the closure to removal under brute force during an improper attempt to remove the closure by a reverse torque. Accordingly, it is the object of the present invention to provide an improved molded plastic, child-resistant closure of the squeeze and turn type, and to provide a package that incorporates a container with such a closure removably attached to a suitably configured finish on a neck portion of the container.
- the object of the present invention to provide a closure of the aforesaid character that can be injection molded with less potential for outer wall cracking, and to provide a package that is made up of a container with such a closure removably affixed to a suitably-configured finish portion on the neck thereof.
- FIG. 1 is a perspective view of a preferred embodiment of a closure according to the present invention
- Fig. 2 is a front elevation view of a container to be used with a closure of Fig. 1
- Fig. 3 is a side elevation view of the container of Fig. 2
- Fig. 4 is a top plane view of the container of Figs. 2 and 3
- Fig. 5 is a bottom plane view of the container of Figs. 2 - 4
- Fig. 6 is an elevation view, partly in cross-section and at an enlarged scale of the closure of Fig. 1 applied to the container of Figs. 2 - 5
- Fig. 7 is a sectional view taken on line 7-7 of Fig. 6
- Fig. 8 is a fragmentary view, at an enlarged scale, of a portion of the structure that is shown in Fig. 7.
- a generally cup-shaped, molded plastic, squeeze and turn child- resistant (C/R) closure according to the preferred embodiment of the present invention is identified generally by reference numeral 10 in Fig. 1 , where the closure 10 is illustrated in a disassembled state, and in Fig. 6 where the closure 10 is shown as being removably affixed to a container that is generally identified by reference numeral 40.
- the closure 10 is preferably injection molded in a single, integral piece, except for a separate sealing liner 70 'if and when required, and is preferably molded from a suitable thermoplastic material that has a proper balance between rigidity and squeezeability, for reasons that will be hereinafter more fully described.
- polypropylene-based thermoplastic materials have been found to be suitable for use in the injection molding of closures in a wide variety of sizes, including 24mm., 28mm., 33mm. and 38mm., which are popular sizes for use in the packaging applications that require C/R removal characteristics under the Poison Prevention Packaging Act for removal of a closure from an associated container, and these packaging applications include the packaging of various quantities of dry prescription or over-the- counter medications.
- the closure 10 is molded with a top panel 12 and spaced-apart concentric inner and outer sidewalls, 14 and 16, respectively, that depend from the top panel 12.
- the sealing liner 70 if required, as it is for most packaged dry products, is loosely or adhesively affixed to an underside 12a of the top panel 12 of the closure 10.
- the liner 70 is adapted to seal against a rim 42a of a neck 42 of the container 40 when the closure 10 is properly affixed to the container 40.
- the underside 12a of the top panel 12 of the closure 10 may be provided with an integral, depending plug (not shown) to seal against an inside of the neck 42 of the container 40, and this will be a suitable construction for a closure 10 that is designed for the packaging of a liquid product in the container 40.
- Other known types of both lined and unlined closure/container sealing techniques are also contemplated.
- the inner sidewall 14 has an inwardly projecting and helically extending thread 18, and the neck 42 of the container 40 has a finish with a complimental, outwardly projecting and helically extending thread 44, whereby the closure 10 may be applied to the container 40 by a turning action and removed from the container 40 by a reverse turning action.
- the outer sidewall 14 of the closure 10 has an inwardly tapered upper free end 14a, at the juncture of the outer sidewall 14 and the top panel 12, and the outer sidewall 14 extends downwardly from the juncture with the top panel 12 beyond a depending free end 16a of the inner side wall 16 to terminate in an outwardly flared and thickened free end 14a.
- the free end 14a of the outer side wall 14 of the closure 10 is provided with a diametrically opposed pair of locking lugs 20 that extend inwardly from the outer sidewall 14, and the locking lugs 20 are positioned on an axis that extends perpendicularly to a spaced, opposed pair of pads 22 that project outwardly from the outer sidewall 14 and extend upwardly from the thickened free end 14a of the outer sidewall 14.
- the closure 10 also has a circumferential ly spaced plurality of ribs 24 that project outwardly from the inner sidewall 16 to reinforce the sidewall 16 against outward flaring loads.
- the outer sidewall has spaced pairs of ribs 26 that function as the pairs of ribs 80, 82, 84 and 86 of the aforesaid '576 patent.
- the locking lugs 20 of the closure 10 ride over tapered sides 46a of ramp-shaped locking lugs 46 on the neck 42 of the container 40, below the thread 44, and C/R opening characteristics is imparted to the package that is made up of the closure 0 applied to the container 40 by providing the locking lugs 46 with radially extending sides 46b at the ends of the tapered sides 46a.
- any attempt to remove the closure 10 from the container 40 simply by unscrewing, in the direction of the arrow B in Figs. 1 and 7, will be blocked by interference between inner free ends 20a of the locking lugs 20 of the closure 10 and the radially extending sides 46b of the locking lugs 46 of the container 40, it being noted that a limited degree of overtravel, for example, 15°, is desirably provided between the free end 20a of each of locking lug 20 and the adjacent radially extending side 46b of the locking lug 40 in the fully applied condition of the closure 10 on the container 40.
- the container 40 is preferably produced in a single, integral piece by a conventional blow molding process from a suitable thermoplastic material, for example, high density polyethylene, it being noted that the thread 44 and the locking lugs 46 are formed in a separate neck mold in a conventional manner.
- a suitable thermoplastic material for example, high density polyethylene
- the thread 44 and the locking lugs 46 are formed in a separate neck mold in a conventional manner.
- the cross section of a body portion 50 of the container 40 is oval, as shown, for example, in Fig. 4, preferably the locking lugs 46 are positioned with their radially extending sides 46b on an axis that is parallel to the minor axis of the oval.
- the pads 22 of the closure when assembled, will be on an axis that is parallel to the major axis of the container 40, and this will result in maximum spacing of the pads 22 from an outside of the body portion 50 of the container 40, which will enhance the C/R opening characteristics of the closure 10 from the container 40.
- the closure 10 is squeezed at the locations of the pads 22, and this will temporarily ovalize the outer sidewall 14 of the closure 10 at the location of the locking lugs 20 to move each locking lug 20 radially outwardly so that its interior will lie outwardly beyond the exterior of the adjacent locking lug 46 of the container 40.
- each locking lug 20 of the closure 10 that faces the radially extending side 46b of the locking lug 46 of the container 10, in the position of the closure 10 on the container 40 that is shown in Fig. 7, has a generally U-shaped inwardly projecting recess or indentation 20b therein, and the recess or indentation 20b thereby forms a flexible finger 20c in a radially innermost portion of the locking lug 20.
- the presence of the finger 20b in the locking lug 20 reduces the mass of thermoplastic melt that must flow from an injection point, which will be at the center of the top panel 12 of the closure 10, to the regions of the outer sidewall 14 of the closure 10 from which the locking lugs 20 project, and this difference from the locking lugs 46, 48 of the aforesaid '576 patent will help to more evenly fill the closure injection mold, which will reduce shrink deformation in the outer sidewall 14 of the closure 10; this difference will also reduce the potential for cracking in the outer sidewall 14 of the closure 10, which is higher in smaller diameter closures.
- the flexibility of the finger 20c of each locking lug 20 will help to reduce the torque required to properly affix a closure 10 to an associated 40 by the ability of the finger 20c to flex radially outwardly during application, and it will also improve the resistance of the closure 10 to improper, brute force removal from the container 40.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Closures For Containers (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/731,926 US20060213860A1 (en) | 2003-12-09 | 2003-12-09 | Child-resistant, molded plastic closure, package incorporating same and container therefor |
PCT/US2004/041571 WO2005056417A1 (en) | 2003-12-09 | 2004-12-08 | Child-resistant, molded plastc closure, package incorporating same and container therefor |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1692049A1 true EP1692049A1 (en) | 2006-08-23 |
Family
ID=34677173
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04813831A Withdrawn EP1692049A1 (en) | 2003-12-09 | 2004-12-08 | Child-resistant, molded plastc closure, package incorporating same and container therefor |
Country Status (7)
Country | Link |
---|---|
US (1) | US20060213860A1 (en) |
EP (1) | EP1692049A1 (en) |
AU (1) | AU2004297275A1 (en) |
CA (1) | CA2546732A1 (en) |
MX (1) | MXPA06006285A (en) |
NZ (1) | NZ547301A (en) |
WO (1) | WO2005056417A1 (en) |
Families Citing this family (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
USD242591S (en) * | 1975-07-09 | 1976-12-07 | Donald Leroy Hurd | Rack for pocketbooks, magazines and the like |
JP4416612B2 (en) * | 2004-09-17 | 2010-02-17 | ダイキョーニシカワ株式会社 | cap |
US20080277367A1 (en) * | 2007-05-11 | 2008-11-13 | Yeager Don F | One-Piece Squeeze And Turn Child-Resistant Closure And Container System |
GB0721998D0 (en) * | 2007-11-09 | 2007-12-19 | Shipbuilding Co Ltd | Lightweight child resistant package |
US8051999B2 (en) * | 2008-03-05 | 2011-11-08 | CVS Pharmacy, Inc. a Rhode Island corporation | Threadable closure with split securing walls and locking notches |
US8123058B2 (en) | 2008-09-11 | 2012-02-28 | Rexam Healthcare Packaging Inc. | Closure with stopping mechanism |
US8079483B2 (en) | 2008-09-11 | 2011-12-20 | Rexam Healthcare Packaging Inc. | Closure with stopping mechanism |
DE102011084308A1 (en) * | 2010-12-08 | 2012-06-14 | Continental Teves Ag & Co. Ohg | Expansion tank for hydraulic motor vehicle brake systems |
GB2487412A (en) * | 2011-01-21 | 2012-07-25 | Julia Catherine Trickett | Childproof toilet brush and holder combination |
US20120305581A1 (en) | 2011-06-03 | 2012-12-06 | Munchkin, Inc. | Cups for spillproof container assemblies |
US20120321412A1 (en) * | 2011-06-20 | 2012-12-20 | Caterpillar Inc. | Cover for a stud and nut assembly |
US8870004B2 (en) | 2011-10-25 | 2014-10-28 | Target Brands, Inc. | Pharmacy bottle, system, and method |
DE102013220492A1 (en) * | 2013-10-10 | 2015-04-16 | Aptar Radolfzell Gmbh | Child-resistant discharge device |
CN105435360A (en) * | 2014-12-12 | 2016-03-30 | 常熟大吉医用塑料制品有限公司 | Plastic bottle with nasal spray pump |
US9889977B2 (en) * | 2015-03-23 | 2018-02-13 | Plastek Industries, Inc. | Child-resistant closure |
WO2017200922A1 (en) * | 2016-05-16 | 2017-11-23 | Plastek Industries, Inc. | Child-resistant large mouth container |
USD880844S1 (en) * | 2017-02-20 | 2020-04-14 | DoseCue, LLC | Pharmaceutical container |
CA3066564A1 (en) * | 2017-05-04 | 2018-11-08 | Berry Global, Inc. | Closure |
US11618619B2 (en) * | 2017-11-21 | 2023-04-04 | Drug Plastics & Glass Company, Inc. | Child-resistant single wall squeeze and turn closure and container assembly |
US20240076109A1 (en) * | 2021-05-12 | 2024-03-07 | Paul Bradley Forrest | Releasable container cap |
US11542067B2 (en) * | 2021-05-12 | 2023-01-03 | Paul Bradley Forrest | Releasable container cap |
Family Cites Families (38)
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US2423582A (en) * | 1945-02-27 | 1947-07-08 | Robert Troxel | Bottle cap |
US3468447A (en) * | 1967-01-30 | 1969-09-23 | Owens Illinois Inc | Unitary cam-off closure |
US3770153A (en) * | 1972-08-04 | 1973-11-06 | Sunbeam Plastics Corp | Safety closure |
US3826395A (en) * | 1973-05-03 | 1974-07-30 | Sunbeam Plastics Corp | Leak-proof closure for a liquid container |
US3917097A (en) * | 1974-06-03 | 1975-11-04 | Gerhardt E Uhlig | Safety closure container |
US3949893A (en) * | 1974-08-19 | 1976-04-13 | Uhlig Gerhardt E | Safety closure container |
US3941268A (en) * | 1975-01-08 | 1976-03-02 | Owens-Illinois, Inc. | Safety closure and container |
US4117945A (en) * | 1977-06-29 | 1978-10-03 | Owens-Illinois, Inc. | Child-resistant safety closure |
US4134513A (en) * | 1977-06-29 | 1979-01-16 | Owens-Illinois, Inc. | Child-resistant safety closure |
US4138028A (en) * | 1977-06-29 | 1979-02-06 | Owens-Illinois, Inc. | Child-resistant safety closure |
US4213534A (en) * | 1979-06-28 | 1980-07-22 | Sunbeam Plastics Corporation | Child-resistant closure |
US4413743A (en) * | 1981-10-26 | 1983-11-08 | Rieke Corporation | Child-resistant safety closure |
GB8518280D0 (en) * | 1985-07-19 | 1985-08-29 | Johnsen Jorgensen Plastics Ltd | Container & closure assembly |
US4948002A (en) * | 1988-12-29 | 1990-08-14 | The Procter & Gamble Company | Package exhibiting improved child resistance without significantly impeding access by adults |
GB8917646D0 (en) * | 1989-08-02 | 1989-09-20 | Metal Box Plc | Safety closure |
USD330677S (en) * | 1989-12-27 | 1992-11-03 | The Procter & Gamble Company | Bottle |
GB9004086D0 (en) * | 1990-02-23 | 1990-04-18 | Metal Box Plc | Container-cap combination |
US5379927A (en) * | 1994-03-11 | 1995-01-10 | Loctite Corporation | New Package for instant adhesives |
US6036036A (en) * | 1995-06-28 | 2000-03-14 | The Procter & Gamble Company | Adult friendly child-resistant package |
US5671853A (en) * | 1995-10-31 | 1997-09-30 | Kerr Group, Inc. | Child-resistant one-piece container and one-piece closure assembly |
US5687863A (en) * | 1996-01-30 | 1997-11-18 | Owens-Illinois Closure Inc. | Squeeze and turn child resistant package |
US5706963A (en) * | 1996-08-13 | 1998-01-13 | Gargione; Frank V. | Child resistant closure |
US5865330A (en) * | 1996-10-21 | 1999-02-02 | Van Blarcom Closures, Inc. | Child resistant cap |
US6102223A (en) * | 1997-01-10 | 2000-08-15 | Rexam Plastics, Inc. | Safety closure and container |
US5779072A (en) * | 1997-02-19 | 1998-07-14 | Owens-Illinois Closure Inc. | Squeeze and turn flip top child resistant package |
US5908125A (en) * | 1997-04-16 | 1999-06-01 | Weatherchem Corporation | Child-resistant screw-on cap and bottle |
US5836466A (en) * | 1997-05-22 | 1998-11-17 | Rexam Plastics, Inc. | Safety closure and container assembly |
US6343705B1 (en) * | 1997-10-14 | 2002-02-05 | Rexam Medical Packaging Inc. | Closure having back-angled lugs |
US6152315A (en) * | 1997-10-14 | 2000-11-28 | Rexam Plastics Inc. | Closure having back-angled lugs |
US5988412A (en) * | 1997-12-17 | 1999-11-23 | Rexam Plastics, Inc. | Safety closure having an internal locking lug |
US5915576A (en) * | 1998-04-15 | 1999-06-29 | Owens-Illinois Closure Inc. | Child-resistant safety closure |
US6053343A (en) * | 1998-05-14 | 2000-04-25 | Kerr Group, Inc. | Child-resistant closure and container with tamper indication |
US6168035B1 (en) * | 1999-05-04 | 2001-01-02 | Rieke Corporation | Child-resistant threaded closure |
US6296130B1 (en) * | 1999-05-19 | 2001-10-02 | Weatherchem Corporation | Anti back off screw on closure |
US6112921A (en) * | 1999-10-12 | 2000-09-05 | Owens-Illinois Closure Inc. | Child-resistant squeeze-and-turn closure, package and method of manufacturing |
US6640987B2 (en) * | 1999-11-30 | 2003-11-04 | Kerr Group, Inc. | Child resistant closure and container having axially offset locking teeth |
US20020166834A1 (en) * | 2001-05-09 | 2002-11-14 | Branson Mark K. | Modified bottle thread design for use with child resistant caps |
US6854613B2 (en) * | 2003-05-09 | 2005-02-15 | Drug Plastics & Glass Company, Inc. | Container and child-resistant closure system |
-
2003
- 2003-12-09 US US10/731,926 patent/US20060213860A1/en not_active Abandoned
-
2004
- 2004-12-08 EP EP04813831A patent/EP1692049A1/en not_active Withdrawn
- 2004-12-08 CA CA002546732A patent/CA2546732A1/en not_active Abandoned
- 2004-12-08 WO PCT/US2004/041571 patent/WO2005056417A1/en active Application Filing
- 2004-12-08 NZ NZ547301A patent/NZ547301A/en unknown
- 2004-12-08 AU AU2004297275A patent/AU2004297275A1/en not_active Abandoned
- 2004-12-08 MX MXPA06006285A patent/MXPA06006285A/en not_active Application Discontinuation
Non-Patent Citations (1)
Title |
---|
See references of WO2005056417A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2005056417A1 (en) | 2005-06-23 |
AU2004297275A1 (en) | 2005-06-23 |
NZ547301A (en) | 2009-05-31 |
MXPA06006285A (en) | 2006-08-25 |
CA2546732A1 (en) | 2005-06-23 |
US20060213860A1 (en) | 2006-09-28 |
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Legal Events
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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Effective date: 20060610 |
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Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR |
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AX | Request for extension of the european patent |
Extension state: AL BA HR LV MK YU |
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RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: OWENS-ILLINOIS, INC. |
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RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: REXAM CLOSURE SYSTEMS INC. |
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RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: REXAM CLOSURE SYSTEMS INC. |
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17Q | First examination report despatched |
Effective date: 20090706 |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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18D | Application deemed to be withdrawn |
Effective date: 20100701 |